bims-evares Biomed News
on Evaluation of research
Issue of 2021‒06‒06
forty-eight papers selected by
Thomas Krichel
Open Library Society

  1. Stereotact Funct Neurosurg. 2021 Jun 02. 1-11
      BACKGROUND: Pallidotomy is the oldest stereotactically performed neurosurgical procedure for movement disorders. Consequently, there is a wealth of literature available on the topic.OBJECTIVES: The aim of this analysis was to identify the top-cited articles on pallidotomy in order to discern the origins, spread, the current trends, and the future directions of this surgical procedure.
    METHODS: We performed a search of the Web of Science database on 19 October 2020 using the keyword "pallidotomy." The top-100 cited articles found were arranged in descending order on the basis of citation count (CC) and citation per year (CY). Relevant conclusions were derived.
    RESULTS: The 100 top-cited articles were published between 1961 and 2017, in 24 journals. The average CC and CY were 118.1 (range - 856-46) and 5.326 (range - 29.52-2.09), respectively. The 3 most prolific authors were Lang AE (Neurologist - Toronto), Lozano AM (Neurosurgeon - Toronto), and Vitek JL (Neurologist - Atlanta). The Journal of Neurosurgery published the highest number of top-cited articles [Neurology. 1960;10:61-9]. The maximum articles were from the USA. University of Toronto and Emory University were the most productive institutions.
    CONCLUSIONS: Pallidotomy has gone through several ebbs and flows. Unilateral pallidotomy is currently recommended for the treatment of motor symptoms of Parkinson's disease and dystonia. The need for further research and improved technology to make the technique safer and prove its efficacy is highlighted, especially keeping in mind a large number of populations to which the prohibitively expensive deep brain stimulation is unavailable.
    Keywords:  Bibliometrics; Functional neurosurgery; Globus pallidum; Pallidotomy; Stereotactic ablation; Web of Science
  2. J Craniofac Surg. 2021 May 25.
      ABSTRACT: The aim of this study was to identified and analyzed the top 25 most cited articles among the articles published in The Journal of Craniofacial Surgery (J Craniofac Surg) from 1995 to 2020 in the Web of Science database. Using the advanced search section in the Web of Science, all articles published in the J Craniofac Surg were listed. The distribution of the numbers of publications by years was determined. It was determined that a total of 11,888 articles were published in the J Craniofac Surg between 1995 and 2020. A total of 84,218 citations were made to these articles, and the h-index of these articles was 73. The top 25 most cited articles were determined. The top three countries that made the most cited to these 25 articles were the USA (n: 1112), China (n: 292), and Germany (n: 251), respectively. The top three journals that made the most cited to these 25 articles were the J Craniofac Surg (n: 378), Plast Reconstr Surg (n: 179), and J Oral Maxillofac Surg (n: 120), respectively. The authors think that this study may benefit researchers in this field by identifying the most cited articles in the J Craniofac Surg.
  3. Skin Appendage Disord. 2021 Apr;7(3): 173-179
      Background: Hidradenitis suppurativa (HS) has historically been a neglected disease. However, research in this field has grown exponentially in the past decade.Methods: The top-cited HS articles from 1950 to 2020 were analyzed for authorship, study topic, study design, and senior author country of origin.
    Results: We found that nearly half of the top 50 cited articles were published in the last decade, with a recent increase in the number of highly cited randomized controlled trials. Medical treatment is the most cited topic, with more attention on biologics over time. The past decade has seen an increase in highly cited articles on HS comorbidities, pathogenesis, and clinical practice guidelines. There has been a predominance of highly cited HS research from Europe; highly cited studies from Africa, Asia, Australia, and South America are lacking.
    Conclusions: Recent advances in HS research have focused on investigating HS pathogenesis and drug development, highlighting disease comorbidities, and improving evidence-based care. Studies in pathogenesis have translated into a paradigm shift in medical treatment from antibiotics to incorporation of targeted therapies in recent years. Encouraging growth of HS research in countries outside of North America and Europe may help to optimize HS care globally.
    Keywords:  Bibliometric; Citation; Hidradenitis suppurativa; Impact factor; Publication
  4. Int J Environ Res Public Health. 2021 May 29. pii: 5851. [Epub ahead of print]18(11):
      In a broad sense, science can be understood as the knowledge contained in scientific manuscripts published in scientific journals. Scientific databases index only those journals that reach certain quality standards. Therefore, research and dissemination of scientific knowledge are essential activities for the growth of science itself. The aim of this manuscript is to assess the situation of medicine and environmental sciences among the bibliometric literature and to put it in perspective with the overall bibliometric publications in all scientific fields. The main countries publishing bibliometric manuscripts are China, USA and Spain. The latter country is ranked three out of the top five institutions according to the Scopus and WoS databases. In both databases, the average scientific collaboration of the top 20 institutions offers the same result, 41%. According to Scopus, the main subject categories in which this research falls are social sciences (38%), computer science (26%) and medicine (23%), while the environmental sciences category has 8%. In the analysis of the Medicine category alone, it has been observed that 136 countries have contributions in this field. The main countries are the United States, China and the United Kingdom. In the field of medicine, the main areas studied were: Epidemiology, Pediatrics, Orthopedics, Cardiology, Neurosurgery, Radiology, Ophthalmology, Oncology, Plastic Surgery and Psychiatry. With respect to environmental sciences, less international dissemination has been found, with only 83 countries having worked in this field. The main ones are China, Spain and the United States. Regarding the top 10 institutions, it can be stated that only Spain and China are relevant. Spain focuses on sustainability and China on the environment. The result of an independent keyword analysis of all published bibliometric manuscripts has shown that the main clusters are: Mapping Science (29%), Research Productivity (23%), Medicine (20%), Environmental Sciences (12%), Psychology (7%), Nursing (6%) and Engineering (4%). In short, medicine and environmental sciences are the most relevant areas in the field of bibliometrics after social sciences and computer sciences.
    Keywords:  Scopus; Web of Science; bibliometry; environmental science; medicine; sustainability
  5. J Pain Res. 2021 ;14 1399-1414
      Background: Migraine is the second-leading cause of disability worldwide. It is often characterized by attacks of severe, mostly unilateral, pulsating headache associated with symptoms such as photophobia, phonophobia, nausea, vomiting, and cutaneous allodynia. Acupuncture therapy has been used worldwide for the treatment of migraine. However, no visual bibliometric analysis has been conducted on the effects of acupuncture on migraine over the past 20 years. Therefore, this study aimed to explore the current status and trends on the use of acupuncture in the treatment of migraine from 2000 to 2020.Purpose: The objective of this study is to identify the current status and emerging trends of the global use of acupuncture on migraine from 2000 to 2020 using CiteSpace and VOSviewer.
    Methods: Web of Science databases were searched for publications related to acupuncture therapy for treating migraine between 2000 and 2020. CiteSpace and VOSviewer were used to analyze the number of publications per year, countries, institutions, authors, journals, references, and keywords.
    Results: A total of 572 publications were included in the final analysis. The total number of publications has continued to increase with some fluctuations over the past 20 years. The most productive country and institution in this field were the USA, and Chengdu University of Traditional Chinese Medicine, respectively. The most active and cited authors were Liang FR and Linde K, respectively. Cephalalgia was the most productive, cited, and co-cited journal. The Linde K (2005) had the highest co-citation, citation number and centrality. The keywords "migraine" ranked first in frequency. The common type of migraine (tension-type headache), research method (randomized controlled trial, multicenter, double-blind), acupuncture's role (prophylactic, quality of life, pain), and evaluation (meta-analysis, systematic review) were the hotspots and frontier trends of acupuncture therapy on migraine between 2000 and 2020.
    Conclusion: The present study examined the research-related trend in acupuncture therapy on migraine using bibliometric methods and identified the statement and research frontiers over the past two decades. This may help researchers to identify potential hotspots and new directions for future research in this field.
    Keywords:  CiteSpace; VOSviewer; acupuncture; bibliometric analysis; migraine; network
  6. J Craniofac Surg. 2021 May 28.
      BACKGROUND: Emphasis on the quantification and qualification of scientific literature has increased over recent years. The newly validated disruption score is a bibliometric measure that identifies groundbreaking research that eclipses prior research in a specific field of study.MATERIALS AND METHODS: The 100 most disruptive craniofacial surgery publications were identified through query of the 4 top craniofacial journals and 10 of the most prominent Plastic and Reconstructive Surgery journals, looking at craniofacial specific publications.
    RESULTS: Presented is the compilation and analysis of the 100 most disruptive publications in the field of craniofacial surgery compared to the 100 most cited publications between 1954 and 2014. Plastic and Reconstructive Surgery had the most papers in the top 100 (n = 56) followed by Journal of Oral and Maxillofacial Surgery (n = 22), and British Journal of Surgery (n = 12). The correlation coefficient between disruption scores and citation counts was -0.001 and -0.07 among all papers, and the top 100 most disruptive papers, respectively. For craniofacial journals, Journal of Craniofacial Surgery had the highest average disruption score for all published papers. The most common decade represented in the top 100 was the 1980's (n = 32) and the least common was the 2000's (n = 14). Randomized controlled trials did not comprise a large amount of either the most disruptive (n = 1) or most cited (n = 2) lists.
    CONCLUSIONS: This is the first use of disruption index score to describe craniofacial surgery research. The disruption score can help recognize paradigm shifts and innovative research in this unique surgical subspecialty.
  7. Med Intensiva (Engl Ed). 2021 Jun-Jul;45(5):pii: S2173-5727(21)00054-0. [Epub ahead of print]45(5): 271-279
      OBJECTIVE: To know the fate of the rejected manuscripts in Medicina Intensiva journal (MI) from 2015 to 2017 with surveillance until 2019.DESIGN: Retrospective observational study.
    SETTING: Biomedical journals publication.
    PARTICIPANTS: Rejected manuscripts in MI journal.
    MAIN VARIABLES OF INTEREST: Time of publication, impact factor (IF), generated citations and variables associated to publication.
    RESULTS: The 69% (420) of analyzed articles (344 originals and 263 scientific letters) were rejected, and 205 (48.8%) were subsequently published, with 180 citations of 66 articles. Journal IF was lower in 173 (84.4%) articles. The number of FI-valid citations was higher than the FI of MI in 21 articles. Origin of manuscript OR 2,11 (IC 95% 1.29-3.46), female author OR 1.58 (IC 95% 1.03-2.44), english language OR 2,38 (IC 95% 1.41-4.0) and reviewed papers OR 1.71 (IC 95% 1.10-2.66) were associated to publication in PubMed database.
    CONCLUSIONS: The rejected articles in MI have a mean publication rate in other journals. Most of these articles are published in journals with less IF and fewer citations than the IF of MI.
    Keywords:  Artículos rechazados; Bibliometrics; Bibliometría; Factor de impacto; Gender; Género; Impact factor; Peer review; Publication rate; Rejected articles; Revisión por pares; Tasa de publicación
  8. Rev Gastroenterol Peru. 2020 Oct-Dec;40(4):40(4): 329-335
      OBJECTIVE: To evaluate the Peruvian scientific production on Helicobacter pylori.MATERIALS AND METHODS: Bibliometric analysis of original articles published until September 8, 2020, in journals indexed in PubMed, Scopus, Web of Science, LILACS, and SciELO. Bibliometric indicators were obtained. Likewise, analysis of the co-citation of authors and co-occurrence of terms with the terms included in the title and the abstract of publications was performed.
    RESULTS: Data from 180 original articles were analyzed. An increase in the number of articles on H. pylori was found (R2 = 0.64, an average annual growth rate of 8.01%). A total of 777 authors were identified, with an average number of articles per author of 0.18, and a collaboration index of 5.64. The average number of citations per original article was 1.91. The Universidad Peruana Cayetano Heredia was the institution with the highest number of original articles (63.2%). The analysis of co-occurrence of terms found terms related to gastric cancer during the whole study period and, for recent years, terms related to the treatment of H. pylori infection and water sources.
    CONCLUSION: There is an increase in Peruvian production in original articles on H. pylori. In recent years, the study of the eradication of H. pylori and the transmission of the agent from water sources have been topics of interest.
  9. JMIR Pediatr Parent. 2021 May 11.
      BACKGROUND: Since the beginning of the COVID-19 pandemic, a great number of papers have been published in the pediatric field.OBJECTIVE: We aimed to assess the worldwide research on COVID-19 in the pediatric field by bibliometric analysis, identifying publication trends and topic dissemination and showing the relevance of publishing authors, institutions and countries.
    METHODS: Scopus database was comprehensively searched for all indexed documents published between January 1, 2020 and June 11, 2020, dealing with COVID-19 in pediatric age (0-18 years). A machine learning bibliometric methodology was applied to evaluate the total number of papers and citations, journal and publication types, the top productive institutions and countries and their scientific collaboration, the core keywords.
    RESULTS: A total of 2301 papers were retrieved, with an average of 4.8 citations per article. Out of them, 1078 (46.9%) were research articles, 436 (18.9%) reviews, 363 (15.8%) letters, 186 (8.1%) editorials, 7 (0.3%) were conference papers, and 231 (10%) others. The studies were published in 969 different journals, headed by The Lancet. The retrieved papers were published by a total of 12657 authors from 114 countries. The most productive countries were the USA, China, and Italy. The four main clusters of keywords were: pathogenesis and clinical characteristics (keyword occurrences n=2240), public health issues (n=352), mental health (n=82), and therapeutic aspects (n=70).
    CONCLUSIONS: In the pediatric field, a large number of articles were published in a limited period on COVID-19, testifying the rush to timely spread new findings on the topic. The leading authors, countries, and institutions evidently belong to the most seriously involved geographical areas. A focus on the pediatric population is often included in general articles, and the pediatric research about COVID-19 mainly focused on the clinical features, public health issues, and psychological impact of the disease.
    CLINICALTRIAL: Not applicable.
  10. Neurourol Urodyn. 2021 May 31.
      AIMS: Electrical neuromodulation of bladder function has been extensively investigated in the literature. To date, there has been no characterization of the field, and there is a lack of bibliometric literature to guide future studies. We directed this scientometric analysis to characterize the distribution, characteristics and relationships of the field, with subanalysis of top 100 articles.METHODS: The Web of Science Core Collection of the Thompson Reuters Web of Science was searched and analyzed to determine distributions and characteristics of clinical research investigating electrical neuromodulation in bladder dysfunction. Field citation and coauthorship networks were mapped, and recent citation bursts of the past decade are described. The top 100 cited articles were categorized, with level of evidence rating system applied.
    RESULTS: A total of 872 articles published from 1949 until October 2020 were included in field analysis. Europe demonstrated the highest continental productivity within field (n = 539, 61.81%), and the United States the top nation (35.55% of field, 39.24% of top 100 articles). The Journal of Urology has historically published the most articles in the field (n = 150, 17.20%), and top 100 articles (n = 41, 40.20%). Top 100 articles reported studies of neuromodulation effects via sacral neuromodulation (n = 59); of non-neurological bladder dysfunction (n = 72); urinary incontinence (n = 92), frequency (n = 73) and urgency (n = 68) symptomology.
    CONCLUSIONS: Analysis of electrical neuromodulation of bladder dysfunction literature reveals historical development, core research clusters and relationships, and an increase in publication activity over past decades.
    Keywords:  bibliometrics; implantable neurostimulators; overactive; urinary bladder; urinary incontinence; urinary retention
  11. J Clin Med. 2021 May 27. pii: 2334. [Epub ahead of print]10(11):
      Postoperative pain (POP) remains a major challenge for surgeons and anesthesiologists worldwide, especially in low- and middle-income countries. Elderly patients are at higher risk for undertreatment of pain. Despite that, there is a paucity of papers addressing POP among this population in developing countries. This study aimed to provide a bibliometric analysis of the literature concerning postoperative pain in elderly patients from low- and middle-income countries. It was performed an extensive search of papers on this subject through the Web of Science and Scopus database using a series of uniterms and, including publications from 2001 to 2021. Publication quality was assessed by using total citation frequency, average citations per item and other citation indexes. Citation indexes were low, with the highest reaching 15 citations. In conclusion, few studies of postoperative pain in the elderly in countries with medium and low income, indicating a need that has not yet been met for this population and in these areas of the world. The published studies were not specifically aimed at the elderly, had limited impact, low international visibility. They were not epidemiological studies and are not robust, weakening knowledge and decision-making towards policies directed at this vulnerable population.
    Keywords:  Scopus; Web of Science; bibliometric analysis; bibliometric review; developing countries; elderly; low-income countries; middle-income countries; postoperative pain
  12. Int J Environ Res Public Health. 2021 May 14. pii: 5222. [Epub ahead of print]18(10):
      Positive organizational psychology (POP) is a research area that focuses on the positive aspects of optimal functioning at work. Although consolidated and with a large volume of publications, no bibliometric analysis has been performed that allows knowing its high-level structure, developments, and distribution of knowledge since its origins. The objective is to analyze the 7181 articles published in POP on the Web of Science Core Collection (WoSCC). A retrospective bibliometric analysis and science mapping were performed. The title, authors, institutions, countries, scientific categories, journals, keywords, year, and citations were extracted from WoSCC. Impact factor, quartile, and country were collected from Journal Citation Reports (JCR) 2019. Authors were classified according to the proposal of Crane, and Bradford's law was calculated. The results show that it is an area with more than 100 years of experience, divided into three stages of different productivity and visibility, highlighting a decrease in its visibility in recent years. With a multidisciplinary and international interest, psychology and business and economics stand out, especially in countries such as the United States, the United Kingdom, and the Netherlands. Four popular study topics emerged: well-being at work, positive leadership, work engagement, and psychological capital.
    Keywords:  bibliometric analysis; positive organizational psychology; science mapping
  13. Int J Environ Res Public Health. 2021 May 18. pii: 5354. [Epub ahead of print]18(10):
      BACKGROUND: Sports vision is a relatively new specialty. The objective is to provide ophthalmological and optometric care services for the care of vision in the sports field. An increasing number of athletes and coaches are trying to improve visual skills and they seek information on social media. The current excess of information has made it increasingly difficult to identify high quality articles. For this reason, alternative metrics are useful tools to identify publications that draw attention to society. This research aims to study the influence of social networks on the importance of vision in sport.METHODS: Altmetric Explorer was used to perform a search using "sport", "vision" and "eye" as keywords. The 100 outcomes with the most attention were analyzed and correlated with the number of citations in the Web of Science (WoS) using the Spearman correlation coefficient.
    RESULTS: The 100 best Altmetric Attention Scores (AASs) were published in 67 journals and had a mean AAS value of 30.22 ± 62.37 The results were discussed mainly on Twitter, with a mean of 113.99 ± 43.86 tweets and retweets and a mean of 75.92 ± 79.92 readers in Mendeley. There was no correlation between AAS and WoS Cites for the top 100 outcomes and the correlation was low if we considered the total research results rather than the top 100.
    CONCLUSIONS: The citations are not related to the impact of scientific articles on social networks. Sports vision is a specialty with a growing interest in social media.
    Keywords:  Altmetric; social media; social network analysis; sport vision
  14. Ophthalmol Glaucoma. 2021 May 31. pii: S2589-4196(21)00140-X. [Epub ahead of print]
      PURPOSE: The aim of this study is to explore the relevance of scientific production on glaucoma using bibliometric tools.DESIGN: Bibliographic study SUBJECTS: Original articles published in the timeframe 1900-2019 METHODS: We performed a search in Web of Science for documents published between 1900 and 2019. We used bibliometric indicators to explore documents production, dispersion, distribution, time of duplication and annual growth, as characterized by Price's law of scientific literature growth, Lotka's law, the transient index and the Bradford model. We also calculated the participation index of different countries and institutions. Finally, we explored with bibliometric mapping the co-occurrence networks for the most frequently used terms in glaucoma research.
    MAIN OUTCOME MEASURE: Bibliometric indicators for individuals, institutes and countries RESULTS: A total of 33,631 original articles were collected from the timeframe 1900-2019. Price's law shows an exponential growth. Scientific production is better adjusted to exponential growth (r = 0.967) than linear growth (r = 0.755). Literature on glaucoma research increased its growth in the last 30 years at a rate of 5.1% per year with a production that doubles its size every 13.9 years. The transience index is 60.08%; this indicates that most of the scientific production is due to very few authors. Bradford´s law shows a high concentration of articles published in a small core of specialized journals. Lotka's law indicates that the distribution of authors is heavily concentrated in small producers. USA and University of London have the highest production of original articles. Map network visualization shows the generated term map detailing clusters of closely related terms.
    CONCLUSIONS: Glaucoma literature has had exponential growth. There is a very high rate of transience that indicates the presence of numerous authors who sporadically publish on this topic. No evidence of a saturation point in the glaucoma literature was observed .
    Keywords:  bibliometric indicators; bibliometric mapping; collaborative networks; glaucoma; scientific production
  15. J Hand Surg Am. 2021 May 26. pii: S0363-5023(21)00206-9. [Epub ahead of print]
      PURPOSE: Social media adds to the traditional methods of research dissemination. It allows researchers and publishers to immediately share content directly with interested end users on a global scale. Alternative metrics (altmetrics) are new bibliometrics that describe article-level activity on platforms such as Twitter, Wikipedia, and online news media. Altmetrics are strongly associated with citation counts in numerous medical disciplines. The aim of this study was to investigate the relationship of altmetrics to citation counts in the field of hand surgery.METHODS: Altmetric Explorer was used to extract data on altmetrics and citation rates for articles published in 2017 in 6 prominent hand surgery journals. Multivariable negative binomial regression was used to estimate the relationship between citation counts and predictors (presented as the incidence rate ratio with a 95% confidence interval [CI]).
    RESULTS: Overall, 624 articles were included. Mentions on social media platforms were independently associated with more citations (adjusted incidence rate ratio 1.04 [95% CI 1.02-1.05]). The factor that most influenced the rate of citations was the journal in which the article was published; articles in the Journal of Hand Surgery had at least 1 more citation than articles published elsewhere (median difference 3 [interquartile range {IQR} 2-3]) and had a median Altmetric Attention Score which was 3 points higher (IQR 2-3) than articles published elsewhere.
    CONCLUSIONS: The dissemination of hand surgery research through social media channels is associated with substantial and measurable improvements in short-term citation rates CLINICAL RELEVANCE: Social media appears to be a valuable tool for communicating important research directly to hand surgeons in a timely and succinct manner.
    Keywords:  Altmetrics; Facebook; SoMe; Social media; Twitter; citations
  16. J Med Internet Res. 2021 May 31. 23(5): e28859
      BACKGROUND: The development of an author-level complementary metric could play a role in the process of academic promotion through objective evaluation of scholars' influence and impact.OBJECTIVE: The objective of this study was to evaluate the correlation between the Healthcare Social Graph (HSG) score, a novel social media influence and impact metric, and the h-index, a traditional author-level metric.
    METHODS: This was a cross-sectional study of health care stakeholders with a social media presence randomly sampled from the Symplur database in May 2020. We performed stratified random sampling to obtain a representative sample with all strata of HSG scores. We manually queried the h-index in two reference-based databases (Scopus and Google Scholar). Continuous features (HSG score and h-index) from the included profiles were summarized as the median and IQR. We calculated the Spearman correlation coefficients (ρ) to evaluate the correlation between the HSG scores and h-indexes obtained from Google Scholar and Scopus.
    RESULTS: A total of 286 (31.2%) of the 917 stakeholders had a Google Scholar h-index available. The median HSG score for these profiles was 61.1 (IQR 48.2), and the median h-index was 14.5 (IQR 26.0). For the 286 subjects with the HSG score and Google Scholar h-index available, the Spearman correlation coefficient ρ was 0.1979 (P<.001), indicating a weak positive correlation between these two metrics. A total of 715 (78%) of 917 stakeholders had a Scopus h-index available. The median HSG score for these profiles was 57.6 (IQR 46.4), and the median h-index was 7 (IQR 16). For the 715 subjects with the HSG score and Scopus h-index available, ρ was 0.2173 (P<.001), also indicating a weak positive correlation.
    CONCLUSIONS: We found a weak positive correlation between a novel author-level complementary metric and the h-index. More than a chiasm between traditional citation metrics and novel social media-based metrics, our findings point toward a bridge between the two domains.
    Keywords:  Scopus; Twitter; altmetrics; digital health care; digital platform; digital scholarship; h-index; health care; journal impact factor; metrics; scientometrics; social media; stakeholders
  17. Zhonghua Wei Zhong Bing Ji Jiu Yi Xue. 2021 Apr;33(4): 433-437
      OBJECTIVE: To illustrate a relatively complete knowledge system (e.g., research outputs, current hotspots, and future trends) in the sepsis field and to help scholars grasp the scientific research direction or clinical focus of treatment.METHODS: The relevant literatures of sepsis during the time from 1985 to 2019 in Web of Science database were collected. Sepsis-related research contents were generated using softwares (CiteSpace 5.6.R2 and VOSviewer 1.6.13), which using data mining, information processing and knowledge map methods, to analyze the historical evolution and predict the development trend.
    RESULTS: A total of 8 189 papers on sepsis were published. The volume of publications were increasing yearly from 1985 to 2019, and reached the top list of 1 276 in 2019. For research contents of sepsis, it has formed the basic characteristics of sepsis which focusing on epidemiological studies and animal experiments. Through cluster analysis, the researches mainly focused on six aspects: septic rat, necrotizingenterocolitis, sepsis-associated encephalopathy, acute kidney injury (AKI), gut-derived sepsis, and inflammatory mediator. And it presented the literature characteristics that related to the injury or dysfunction of intestines, brain, liver, kidney or other organs, but the heart and lung researches were more marginal. Additionally, based on the top key words with the strongest citation bursts, it reflected that the development trend of the continuous attention hotspots with "endotoxin" or "endotoxin shock", the significant attention hotspots with "inflammation", "immunity" and "multiple organ dysfunction syndrome" (MODS), and the novel burst attention hotspots with sepsis management including "diagnosis" and "chemotherapy".
    CONCLUSIONS: Through the hotspots and trends visualization of sepsis, the current researches are prefer to animal experiments, epidemiology, or other basic scientific aspects. Meanwhile, the researches are mostly focusing on inflammatory reaction, immune function or organ dysfunctions. Integrating the knowledge maps of hotspots and trends, based on researches of epidemiology, diagnosis, risk factors, pathogenesis, or treatment, we predict that the future scientific topics will concentrating on childhood sepsis, organ injury mechanism or intervention relating to MODS, and integrated management of sepsis by combining traditional Chinese medicine and Western medicine.
  18. Skeletal Radiol. 2021 Jun 02.
      OBJECTIVE: The purpose of this study is to explore authorship trends within the musculoskeletal radiology subspecialty-focused journal, Skeletal Radiology, from inception to 2020.MATERIALS AND METHODS: Skeletal Radiology articles published in 1976, 1986, 1996, 2006, 2016, and 2020 were reviewed. For each article, the number of authors, the number of distinct institutions, the names of first and last authors, the country of the first author, the article length, and the number of article references were recorded.
    RESULTS: A total of 885 articles passed the exclusion criteria to be included in the study. Since inception, there has been a significant increase in the number of SR articles published (P = 0.02), the mean number of authors per article (P < 0.01), the mean number of references per article (P < 0.01), the mean number of distinct institutions per article (P = 0.02), and the mean number of pages per article (P < 0.01). The proportion of female first and last authors significantly increased (P = 0.02, P = 0.02). There was a significant increase in the proportion of articles published from Asia (P = 0.04). However, no significant changes in the proportion of articles published from other regions were observed.
    CONCLUSION: Similar to authorship trends in other medical journals, Skeletal Radiology demonstrated upward trends in authorship count, distinct institutional count, and article length. A rise in first and last female authorship was observed. Finally, an increase in the proportion of authors from Asia was observed while no significant changes in the proportion of authors from other regions were demonstrated.
    Keywords:  Authorship; Gender; Musculoskeletal radiology; Region; Skeletal radiology; Trend
  19. J Korean Med Sci. 2021 May 31. 36(21): e144
      BACKGROUND: The Publons platform provides integrated information on researchers, peer reviewers, publications and certain author metrics. Central Asia is a potentially growing region in terms of young researchers.METHODS: Using the inbuilt Publons search, the top institutes of nine countries of Central Asia and neighbours were identified and data on their reviewers, number of publications, number of peer reviews completed were extracted. These were compared with demographics of the countries such as population, gross domestic product, number of physicians and proportion of population enrolled for higher education.
    RESULTS: Amongst the top 15 institutes in Central Asia, China has claim to 12 while Kazakhstan has two and Iran has one. The number of top peer reviewers, number of verified reviews and Web of Science indexed publications from these top institutes varied directly with the number of researchers each had. Afghanistan, Tajikistan and Turkmenistan are not performing well on most of these while China seems to be an outlier on the upper edge of the graphs. There is good correlation between the number of researchers in the top institutes per country and both number of publications and number of completed reviews. The number of total publications per top ten institutes of each country has high correlation with various demographic parameters like total population (Spearman rho, ρ = 0.85), gross domestic product (ρ = 0.82), total number of physicians (ρ = 0.72), and number enrolled for higher education (ρ = 0.93).
    CONCLUSION: There appears to be much disparity among the rankings, number of researchers, reviewers and published manuscripts across various countries in Central Asia. The gross heterogeneity of Central Asia needs to be minimized by nurturing and mentoring potentially upcoming researchers in publication, peer reviewing as well as in ethics involved.
    Keywords:  Central Asia; Peer Review; Publications; Publons; Publons Ranking; Universities
  20. Hand (N Y). 2021 May 31. 15589447211017220
      BACKGROUND: Traditional measures of evaluating scholarly output do not capture the impact social media can provide in disseminating and promoting research. We sought to better understand the level of online attention that high-quality hand research received.METHODS: Scientific manuscripts published from 2017 in Journal of Hand Surgery (American Volume) (JHS-A), Journal of Hand Surgery (European Volume) (JHS-E), and HAND were recorded. Manuscript characteristics were determined, including the number of citations. Altmetric Attention Score (AAS), a measure of a manuscript's online attention and impact, was determined, as well as Twitter mentions, Facebook mentions, and news outlet mentions. Spearman rho (ρ) correlation coefficient was used to evaluate the relationship between the number of citations and AAS. Multivariable linear regression analysis was performed to determine which manuscript factors were associated with AAS.
    RESULTS: A total of 323 manuscripts were identified. There was a weak positive correlation between the number of citations and AAS; however, this relationship did not exist for each individual journal. Publication in HAND and JHS-E were associated with lower average manuscript AAS when using JHS-A as the reference group. Two additional factors were also associated with increased manuscript AAS: (1) being a clinical study focused on a specific upper extremity anatomical location; and (2) increasing number of institutions on a study.
    CONCLUSIONS: Publication in HAND and JHS-E were associated with lower manuscript AAS when using JHS-A as the reference group, suggesting that HAND and JHS-E have room for improvement in using social media to share their high-quality hand surgery scientific articles.
    Keywords:  AAS; Altmetric Attention Score; Facebook; Twitter; hand surgery; impact factor; social media
  21. Curr Urol. 2021 Mar;15(1): 59-62
      Background/Aims: There is clear evidence that publishing research in an open access (OA) journal or as an OA model is associated with higher impact, in terms of number of reads and citation rates. The development of OA journals and their quality are poorly studied in the field of urology. In this study, we aim to assess the number of OA journals, their quality in terms of CiteScore, percent cited and quartiles, and their scholarly production during the period from 2011 to 2018.Methods: We obtained data about journals from, and we filtered the list for urology journals. We obtained data for all Scopus indexed journals during the period from 2011 to 2018. For each journal, we extracted the following indices: CiteScore, Citations, scholarly output, and SCImago quartiles. We analyzed the difference in quality indices between OA and non-OA urology journals.
    Results: Urology journals have increased from 66 journals in 2011 to 99 journals in 2018. The number of OA urology journals has increased from only 10 (15.2%) journals in 2011 to 33 (33.3%) journals in 2018. The number of quartile 1 (the top 25%) journals has increased from only 1 journal in 2011 to 5 journals in 2018. Non-OA urology journals had significantly higher CiteScore compared with OA journals till the year 2015, after which the mean difference in CiteScore became smaller with insignificant p-value.
    Conclusion: Number and quality of OA journals in the field of urology have increased throughout the last few years. Despite this increase, non-OA urology journals still have higher quality and output.
    Keywords:  Bibliometrics; Journals; Open access; Scopus; Urology
  22. Int J Environ Res Public Health. 2021 May 27. pii: 5756. [Epub ahead of print]18(11):
      BACKGROUND/OBJECTIVES: Brazil, Russia, India China and South Africa have prioritized cooperation regarding health, including malnutrition. Anaemia in children, adolescents and women of reproductive age has been on the increase in these countries, placing a huge strain on healthcare systems. This study aimed to map the scientific perspective and research publications on anaemia in children and adolescents in the BRICS countries.METHODS: Bibliometric analyses were employed to map scientific publications related to anaemia in children and adolescents in BRICS countries using VOSviewer software. Research documents from 1990 to 2020 were imported from PubMed. Descriptive statistics was used to analyse trends in research publications, authorship and keywords over the 30-year period.
    FINDINGS: BRICS countries accounted for 15% of all publications on the subject within the last three decades. While India had the highest number of publications, China had the author with the highest number of research publications and co-authorship links. Of all article types, India had the highest number of letters, while China and South Africa published the highest number of RCT/clinical trial and review articles, respectively.
    CONCLUSION: The review of all scientific studies on anaemia in BRICS nations for the past 30 years revealed gaps in research collaborations on anaemia between authors in BRICS nations. However, collaborative research projects may contribute to building a shared base of evidence, innovations, data and methodologies for a more comprehensive understanding of the risks and vulnerabilities of child and adolescent anaemia. This will aid in the development and evaluation of interventions and policies to alleviate anaemia and nutrient deficiencies.
    Keywords:  BRICS; adolescents; anaemia; authors; publications; research collaborations
  23. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi. 2021 May 20. 39(5): 346-350
      Objective: To understand the research status of occupational health risk assessment in recent ten years. Methods: In April 2020, the literatures related to occupational health risk assessment published by CNKI and Web of Science core collection (WoSCC) databases from 2010 to 2019 were searched, and Excel 2016 software was used to organize the literature, CiteSpace 5.6.R2 software was used for visual analysis. Results: A total of 58 Chinese literatures and 407 English literatures were included. The authors of the high frequency posts were Zhang Meibian, and Alessandro Marinaccio, and the publishing institutions were mainly the National Institute for Occupational Health and Poison Control of Chinese Center for Disease Control and Prevention and Finnish Institute Occupational Health. The Chinese journal with the most articles was Chinese Journal of Industrial Hygiene and Occupational Diseases, and the English journal was Safety Science. Chinese high-frequency keywords mainly included risk assessment, occupational health, occupational exposure. English high-frequency keywords mainly included occupational health, risk, risk factor. The prominent words in Chinese literature were occupational health, coal dust, occupational hazards, occupational health and occupational disease hazards; Risk assessment, worker, exposure, heart disease, cardiovascular disease and so on were prominent words in English literature. Conclusion: The main research keywords in the field of occupational health risk assessment at home and abroad focus on occupational health and risk assessment, but the research direction and focus are slightly different.
    Keywords:  Bibliometrics; Occupational health; Risk assessment; Visualized analysis
  24. Res Integr Peer Rev. 2021 Jun 02. 6(1): 9
      BACKGROUND: The Transparency and Openness Promotion (TOP) Guidelines describe modular standards that journals can adopt to promote open science. The TOP Factor is a metric to describe the extent to which journals have adopted the TOP Guidelines in their policies. Systematic methods and rating instruments are needed to calculate the TOP Factor. Moreover, implementation of these open science policies depends on journal procedures and practices, for which TOP provides no standards or rating instruments.METHODS: We describe a process for assessing journal policies, procedures, and practices according to the TOP Guidelines. We developed this process as part of the Transparency of Research Underpinning Social Intervention Tiers (TRUST) Initiative to advance open science in the social intervention research ecosystem. We also provide new instruments for rating journal instructions to authors (policies), manuscript submission systems (procedures), and published articles (practices) according to standards in the TOP Guidelines. In addition, we describe how to determine the TOP Factor score for a journal, calculate reliability of journal ratings, and assess coherence among a journal's policies, procedures, and practices. As a demonstration of this process, we describe a protocol for studying approximately 345 influential journals that have published research used to inform evidence-based policy.
    DISCUSSION: The TRUST Process includes systematic methods and rating instruments for assessing and facilitating implementation of the TOP Guidelines by journals across disciplines. Our study of journals publishing influential social intervention research will provide a comprehensive account of whether these journals have policies, procedures, and practices that are consistent with standards for open science and thereby facilitate the publication of trustworthy findings to inform evidence-based policy. Through this demonstration, we expect to identify ways to refine the TOP Guidelines and the TOP Factor. Refinements could include: improving templates for adoption in journal instructions to authors, manuscript submission systems, and published articles; revising explanatory guidance intended to enhance the use, understanding, and dissemination of the TOP Guidelines; and clarifying the distinctions among different levels of implementation. Research materials are available on the Open Science Framework: .
    Keywords:  Open science; Reproducibility; Research transparency; TOP factor; TOP guidelines
  25. Int J Environ Res Public Health. 2021 May 27. pii: 5768. [Epub ahead of print]18(11):
      Along with the rapid development of nanotechnology, the biosafety of quantum dots (QDs), a widely used kind of nanoparticles, has grabbed the attentions of researchers, because QDs have excellent and unique optical properties that other commonly used nanoparticles, like walled carbon nanotubes, do not have. The understanding of the toxicity of QDs is an important premise for their application in wider fields, including biology and medicine. This study sought to analyze scientific publications on the toxicity of QDs and to construct a bibliometric model for qualitative and quantitative evaluation of these publications over the past decade, which visually presented the status quo and future development trend on the toxicological study of QDs. A search for data using the triple blind method revealed that, as of 31 December 2018, there were 5269 papers published on the toxicity of QDs. RSC ADVANCES (5-year IF, 3.096) ranked first in the number of publications. China had the largest number of publications (2233) and the highest H-index (119), but the United States was still the leading country with regards to the quality of the research. LIU Y (106 publications) published the most papers, while Hardman R (304 co-citations) had the most co-citations. The keyword "walled carbon nanotube" ranked first in the research frontier. The findings not only determine a development trend of the toxicological study of QDs, but also identify further research directions in this field.
    Keywords:  bibliometrics; nanotoxicology; quantum dot; toxicity
  26. Prep Biochem Biotechnol. 2021 Jun 03. 1-12
      The reuse of agro-industrial waste has been a recurring issue since the 20th century. With a composition rich in carbohydrates and because of the massive amount of residue produced daily all over the world, corncob became a low-cost and suitable substrate to produce high added-value compounds. Biosurfactants are bioproducts of versatile applications due to their chemical structure with hydrophilic and hydrophobic regions. The current work performed a bibliometric analysis to identify research related to the synthesis of biosurfactants using corncob as substrate. Despite the high availability of corncobs, only nine articles were found in Scopus and Web of Science using different pretreatment processes and microorganisms. After an initial screening, data regarding research organizations, scientific journals, citations, countries, institutions, and keywords were analyzed. Results indicated that corncobs were also used to produce enzymes, adsorbents, activated carbon, and furfural. The presented evaluation updated the status of art, identifying a serious need for more research, especially because of corncob's high potential to provide fermentable sugars and the wide range of variables influencing fermentation processes that still need to be studied. A future association of this low-cost substrate with other methods can result in a promising scenario for technology transference.
    Keywords:  Agro-industrial waste; bibliometrics; biosurfactant; corncob
  27. Int J Environ Res Public Health. 2021 May 12. pii: 5143. [Epub ahead of print]18(10):
      Food waste and loss is a global issue involving ethics, society, the environment, and the economy. However, there is a lack of systematic and visual scientific knowledge and graph methods to study the precedents of this field's development over time. The article is based on the scientific knowledge graph research of articles published in the past 22 years to review the latest food waste research developments. The study will be conducted from the following perspectives: country/region, institution, author, journal, keyword co-occurrence, and article co-citation. It turns out that in the past eight years, food waste research has grown rapidly. A total of 8298 research articles have been published in 8064 journals and 176 Web of Science (WOS) subject categories. Research shows in the past 20 years. The main research hotspots were anaerobic digestion, biogas production, composting, biological hydrogen production, and innovation in system management methods. In the future, efficient and multitask biological value-added conversion technology, systematization of food-supply-chain decision-making aid models, and research on differences in management strategies may become the frontiers of research.
    Keywords:  bibliometric analysis; evolution path; food waste; mapping knowledge domains
  28. Epilepsy Behav. 2021 May 27. pii: S1525-5050(21)00292-4. [Epub ahead of print]121(Pt A): 108058
      OBJECTIVES: This study aimed to quantitatively, qualitatively, and visually analyze, describe, evaluate, and identify trends of the published scholarly documents on physical activity/exercise in epilepsy.METHODS: Scopus database was systematically searched using the keywords relevant to "exercise" and "epilepsy". The Bibliometrix R-Tool was used to quantify, analyze, visualize, and describe the data set of the scholarly documents identified through the systematic search. Data collected from the retrieved documents were synthesized qualitatively.
    RESULTS: Search of the database resulted in 182 scholarly documents reporting on physical activity/exercise in epilepsy. The scholarly documents were obtained from 93 indexed sources, authored by 516 researchers, indexed by 1311 keywords, and cited 4648 references. Epilepsy and Behavior was the fastest growing source for documents on physical exercise in epilepsy and the Universidade Federal De So Paulo in Brazil was the most productive institution in the field. Thematic analysis showed that epilepsy and physical exercise were basic themes, quality of life and depression were motor themes, and yoga was a niche theme. Quality of life and sport were trendy topics after the year 2015. A total of 14 barriers and 2 promoters of physical activity/exercise were qualitatively synthesized.
    CONCLUSION: Findings of this analysis might be helpful to librarians, institutions, and professionals interested in the field of physical activity/exercise in epilepsy. Researchers might be informed of collaboration opportunities, trendy topics, and emerging themes in the field.
    Keywords:  Bibliometric analysis; Epilepsy; Exercise; Literature; Physical activity; Scopus; Trends
  29. Endocrinol Diabetes Nutr. 2021 May 28. pii: S2530-0164(21)00119-1. [Epub ahead of print]
      INTRODUCTION: A case report is a scientific article describing one or more patients with unusual clinical presentations. In recent years, the number of case reports in publications has decreased. In this study, we analyze the publication of case reports in journals of Endocrinology during the years 2010, 2015 and 2019.MATERIALS AND METHODS: The Pubmed web was browsed for clinical journals of Endocrinology, those published in English and/or Spanish being selected, and the relevant variables analyzed.
    RESULTS: Of 84 analyzed journals, 51 accepted cases for publication, 29 did not, and 4 did so only in exceptional cases. In 2010, 11,754 articles were published, of which 709 were clinical cases (6.9% of the total); in 2015, a total of 14,594 articles of which 655 were clinical cases (5.8% of the total); and in 2019 a total of 14,110 articles, of which 472 were clinical cases (4.6% of the total). In journals demanding payment for the publishing of clinical cases, case reports represented 9% of all articles, and in free journals, 3% (P<.05).
    CONCLUSION: There has been a decline in publication of case reports in journals of Endocrinology in recent years, both in absolute and relative terms. Even though the cases described by these reports are, by definition, exceptional, the decline of their publication implies a significant loss of scientific information and clinical knowledge regarding certain pathologies.
    Keywords:  Case report; Caso clínico; Clinical investigator; Endocrinology; Endocrinología; Investigador clínico; Journal; Publicación; Publication; Revista
  30. Scientometrics. 2021 May 23. 1-24
      In this paper we develop a methodology to assess the scientific wealth of territories at field level. Our methodology uses a bibliometric approach based on the observation of academic research performance and overall scientific production in each territory. We apply it to assess disparities in the Italian territories in the medical specialties at the front line of the COVID-19 emergency. Italy has been the first among western countries to be severely affected by the onset of the COVID-19 pandemic. The study reveals remarkable inequities across territories, with scientific weaknesses concentrated in the south. Policies for rebalancing the north-south divide should also consider, in addition to tangible assets, the gap in production and availability of quality medical knowledge.
    Keywords:  Bibliometrics; Coronavirus; Knowledge capital; Medical specialties; Research performance; Research systems
  31. Entropy (Basel). 2021 May 18. pii: 626. [Epub ahead of print]23(5):
      A global event such as the COVID-19 crisis presents new, often unexpected responses that are fascinating to investigate from both scientific and social standpoints. Despite several documented similarities, the coronavirus pandemic is clearly distinct from the 1918 flu pandemic in terms of our exponentially increased, almost instantaneous ability to access/share information, offering an unprecedented opportunity to visualise rippling effects of global events across space and time. Personal devices provide "big data" on people's movement, the environment and economic trends, while access to the unprecedented flurry in scientific publications and media posts provides a measure of the response of the educated world to the crisis. Most bibliometric (co-authorship, co-citation, or bibliographic coupling) analyses ignore the time dimension, but COVID-19 has made it possible to perform a detailed temporal investigation into the pandemic. Here, we report a comprehensive network analysis based on more than 20,000 published documents on viral epidemics, authored by over 75,000 individuals from 140 nations in the past one year of the crisis. Unlike the 1918 flu pandemic, access to published data over the past two decades enabled a comparison of publishing trends between the ongoing COVID-19 pandemic and those of the 2003 SARS epidemic to study changes in thematic foci and societal pressures dictating research over the course of a crisis.
    Keywords:  COVID-19; MERS; SARS; bibliometry; coronavirus; text and data mining
  32. Front Res Metr Anal. 2021 ;6 652285
      This paper applied a literature-based discovery methodology utilizing citation networks and text mining in order to extract and represent shared terminologies found in disjoint academic literature on food security and the Internet of Things. The topic of food security includes research on improvements in nutrition, sustainable agriculture, and a plurality of other social challenges, while the Internet of Things refers to a collection of technologies from which solutions can be drawn. Academic articles on both topics were classified into subclusters, and their text contents were compared against each other to find shared terms. These terms formed a network from which clusters of related keywords could be identified, potentially easing the exploration of common themes. Thirteen transversal themes, including blockchain, healthcare, and air quality, were found. This method can be applied by policymakers and other stakeholders to understand how a given technology could contribute to solving a pressing social issue.
    Keywords:  Internet of Things; SDGs; citation networks; food security; literature-based discovery; poverty alleviation; text mining
  33. Cir Esp. 2021 May 05. pii: S0009-739X(21)00170-6. [Epub ahead of print]
      AIM: The objective of this study is to analyze the impact of the American College of Surgeons Clinical Congress (ACSCC2020) and the National Surgery Congress of the Spanish Association of Surgeons (CNC2020) in virtual format due to the SARS-CoV-2 pandemic according to the fingerprint.MATERIAL AND METHODS: The Twitter hashtags # ACSCC20 and # CNCirugia2020 were studied to determine tweets, retweets, users and impressions. The data on the accounts with the greatest influence and the historical evolution of the congresses between 2015 and 2020 were analyzed. We used the symplur software to collect and analyze the data.
    RESULTS: Between 2015 and 2017 there was a consistent increase in the number of tweets, participants and impressions. Between 2018 and 2020, the ACS maintains the number of impressions with the fewest number of tweets. However, the CNC continues to grow and achieves its best metrics in 2020. We found statistically significant differences between the most prolific accounts of the ACSCC versus the CNC (P<.002) but there are no differences between the 10 most influential accounts (P=.19) or the accounts with the highest number of impressions (P=.450).
    CONCLUSIONS: Virtual congresses generate a global impact through the use of Twitter for the dissemination of knowledge. In the present 2020, the growth of the impact on social networks has been proportionally greater in the CNC than in the ACSCC. However, the ACS virtual congress generated the greatest impact on social networks measured by the number of users, tweets and impressions between 2015 and 2020.
    Keywords:  American College of Surgeons Clinical Congress; Asociación Española de Cirujanos; COVID-19; Congreso Nacional de Cirugía; Impresiones; Impressions; Redes sociales; SARS-CoV-2; Social network; Twitter
  34. World Neurosurg. 2021 May 27. pii: S1878-8750(21)00762-2. [Epub ahead of print]
      BACKGROUND: The incidence of retractions has been increasing steadily, in direct proportion to the volume of scientific literature. Retraction of published papers is dependent on the visibility of journals and on post-publication scrutiny of published articles by peers. The possibility thus exists that not all compromised ("retractable") papers are detected and retracted from the less-visible journals. The proportion of "retractable" papers and its converse, the proportion of published articles in each journal that are likely to be "true" (PTP), have not been estimated hitherto.METHODS: Three journal sets were created - pure neurosurgery journals (NS-P), the neurosurgery component of multi-disciplinary journals (NS-MD) and high-impact clinical journals (HICJ). We described a new metric - the retraction gap (RGap) - defined as the proportion of retractable papers in journals that have not been retracted. We computed the expected number of retractable papers, RGap and PTP for each journal, and compared these metrics across groups.
    RESULTS: Fifty-three NS-P journals, 10 NS-MD journals and 63 HICJs were included in the analysis. The estimated number of retractable papers was 31 times the actual number of retractions in NS-P journals, 6 times higher in the NS-MD journals and 26 times higher for the HICJs. The RGap was 96.7% for the NS-P group, 83.5% for the NS-MD group and 96.2% for the HICJs. The PTP was 99.3% in the NS-P group, 99.2% in the NS-MD group and 98.6% in the HICJs.
    CONCLUSIONS: Neurosurgery as a discipline had a higher RGap but also a higher PTP than the other 2 groups.
    Keywords:  Impact Factor; journals; neurosurgery; peer review; post-publication scrutiny; rate of retractions; retraction gap; retractions
  35. World Neurosurg. 2021 May 27. pii: S1878-8750(21)00766-X. [Epub ahead of print]
      BACKGROUND: Inequitable access to surgical care is most conspicuous in low-income countries (LICs), such as Ethiopia, where infectious diseases, malnutrition, and other maladies consume the lion's share of the available health resources. In this report, we provide an update on the current state of neurosurgery in Ethiopia, aiming to identify targets for the future development of surgical capacity as a universal health coverage component in this East African nation.METHODS: Publicly available data included in this report were gathered from resources published by international organizations. A PubMed search was used for a preliminary bibliometric analysis of neurosurgeons' scholarly output in Ethiopia and other LICs. Statistical analysis was used to determine the correlation between the number of neurosurgeons and academic productivity.
    RESULTS: Neurosurgeon density has increased over 20-fold from 0.0022 to 0.045 neurosurgeons per 100,000 population between 2006 - 2020. The increase in neurosurgeons was strongly correlated with an increase in total publications (p < 0.001) and the number of new publications per year (p = 0.003). Despite recent progress, the availability of neuroimaging equipment remains inadequate, with 38 CT scanners and 11 MRI machines for a population of 112.07 million. The geographic distribution of neurosurgical facilities is limited to 12 urban centers.
    CONCLUSIONS: Ethiopian neurosurgery exemplifies the profound effect of international partnerships for training local surgeons on LICs' progress towards improved neurosurgical capacity. Collaborations that focus on increasing the neurosurgical workforce should synchronize with efforts to enhance the availability of diagnostic and surgical equipment necessary for basic neurosurgical care.
    Keywords:  East Africa; Ethiopia; academic neurosurgery; capacity building; global neurosurgery; global surgery; low-income countries
  36. Scientometrics. 2021 May 23. 1-19
      This study aims to profile the scientific retractions published in journals indexed in the Web of Science database from 2010 to 2019, from researchers at the top 20 World Class Universities according to the Times Higher Education global ranking of 2020. Descriptive statistics, Pearson's correlation coefficient, and simple linear regression were used to analyze the data. Of the 330 analyzed retractions, Harvard University had the highest number of retractions and the main reason for retraction was data results. We conclude that the universities with a higher ranking tend to have a lower rate of retraction.
    Keywords:  Ranking; Research Anti-ethics; Retraction; World Class Universities
  37. J Foot Ankle Surg. 2021 Apr 29. pii: S1067-2516(21)00159-9. [Epub ahead of print]
      Surgical residents cite a number of reasons to pursue a fellowship training program including improving surgical skills, furthering medical research, pursuing an academic practice, or to generally become an overall better trained surgeon and clinician. The interest in foot and ankle surgery fellowships has increased among graduating residents as have the number of fellowship programs. Since the introduction of these programs, there has been no formal investigation of the scholarly activity among foot and ankle surgery fellows. Using PubMed, a systematic review was conducted from papers published by fellows participating in American College of Foot and Ankle Surgeons or American Podiatric Medical Association approved fellowships during 2013 to 2019. A total of 76 of the 128 identified fellows published research during or within one year of completing their fellowship. Fellows that published at least once prior to fellowship were more likely to publish during fellowship compared to those who had no publication history. Over this 6-year period, fellows contributed to 279 manuscripts where they maintained primary authorship of 34.41% of the publications, across 35 journals, with the most common being the Journal of Foot and Ankle Surgery. Results of this study provide a survey of the scholastic activity among foot and ankle surgery fellows and could be used by applicants and evaluators to stratify applicant aptitude. These results could also serve as a scholarly activity benchmark for current fellows and a method of gauging scholarly involvement for new and current fellowships.
    Keywords:  ACFAS; APMA; fellowship; publications; research; residency
  38. Front Psychol. 2021 ;12 663252
      The coronavirus disease 2019 (COVID-19) pandemic is altering dynamics in academia, and people juggling remote work and domestic demands - including childcare - have felt impacts on their productivity. Female authors have faced a decrease in paper submission rates since the beginning of the pandemic period. The reasons for this decline in women's productivity need to be further investigated. Here, we analyzed the influence of gender, parenthood and race on academic productivity during the pandemic period based on a survey answered by 3,345 Brazilian academics from various knowledge areas and research institutions. Productivity was assessed by the ability to submit papers as planned and to meet deadlines during the initial period of social isolation in Brazil. The findings revealed that male academics - especially those without children - are the least affected group, whereas Black women and mothers are the most impacted groups. These impacts are likely a consequence of the well-known unequal division of domestic labor between men and women, which has been exacerbated during the pandemic. Additionally, our results highlight that racism strongly persists in academia, especially against Black women. The pandemic will have long-term effects on the career progression of the most affected groups. The results presented here are crucial for the development of actions and policies that aim to avoid further deepening the gender gap in academia.
    Keywords:  gender equity; gender gap; motherhood and academia; racial bias; women career
  39. Sci Total Environ. 2021 May 27. pii: S0048-9697(21)03116-8. [Epub ahead of print]789 148045
      Rapid urbanization in China is driving the need of urban rainfall-runoff pollution control technologies due to adverse impacts on water environment. In this study, literature from China National Knowledge Infrastructure, Web of Science and Scopus in 1995/1/1-2019/5/15 are used to review research hotspots, development process and future directions of urban rainfall-runoff pollution control technologies in China and global world. Temporal evolution of publications showed that source reduction played better growing trend in urban rainfall-runoff pollution control field for both China and global world. Furthermore, with bibliometric tool, density visualization maps and co-occurrence network maps were created to identify research hotspots in China and global world. By comprehensively analyzing research hotspots above and development process from extracted literature, future directions of urban rainfall-runoff pollution control technologies were predicted. For model and strategy, both China and global world would concern on the accuracy of models to evaluate combination technologies. For source reduction, China would explore rainwater purification in sponge city, while global world would investigate match characteristics between specific regions and control technologies, combination between model and technologies, and improvement of pollutants removal. For process control, China would enhance ecological gutter inlet performance, whereas global world would concentrate on optimization of rainwater harvesting system. For post treatment, China would estimate modified hydrocylone and coagulation technology, and improve performance of filtration systems, riparian buffers and constructed wetlands, while global world would explore ecological and landscape function of constructed wetlands. Since China ranked first in producing Western publications and was the second most cited country for Western publications recently, China would significantly influence future development of urban rainfall-runoff pollution control technologies around the world. Meanwhile, some directions including infiltration basin and rainwater harvesting system were still shortcomings for China due to a late start of urban rainfall-runoff pollution control technologies in China.
    Keywords:  Bibliometric analysis; Control technologies; Development tendency; Literature summary; Research hotspots; Urban rainfall-runoff pollution
  40. J Craniofac Surg. 2021 Jun 02.
      ABSTRACT: Chairs/chiefs of plastic surgery departments/divisions are responsible for directing activities at academic institutions and thus help determine the direction of academic plastic surgery. Other studies have characterized this group but have not shown which characteristics separate them from other surgeons in the field. To study this relationship, a cross-sectional analysis of plastic surgery faculty affiliated with United States residency training programs (n = 99) was initiated. Data were collected from public online websites. Univariate and multivariate logistic regression were used to identify factors independently associated with chairs/chief status. Sub-analyses were performed within Tiers stratified by residency program rank of chair/chief's current institution. Among 943 plastic surgeons, 98 chairs/chiefs were identified. In accordance with prior literature, most are male (89%) and fellowship-trained (62%), and they have a median H-index of 17. Compared to other surgeons, chair/chiefs have more years in practice (odds ratio [OR]: 1.026, confidence interval [CI]: 0.002-0.049, P = 0.034), higher H-index (OR: 1.103, CI: 0.048-0.147, P < 0.001), and more citations (OR: 1.000, CI: -0.000 to -0.001, P = 0.006). Chair/chiefs were also more likely to be journal editorial board members (OR: 1.728, CI: -0.033 to 1.127, P = 0.046) and national society/organization presidents (OR: 1.024, CI: 0.008-0.039, P = 0.003). No notable differences were found between department chairs versus division chiefs or across Tiers. Overall, scholarly achievement and significant years of experience distinguish chairs/chiefs in American academic plastic surgery. Criteria for achieving this leadership role may not differ between departments and divisions. Further research is needed to evaluate whether these characteristics translate into more effective leadership.
  41. Per Med. 2021 Jun 01.
      Aim: Personalized medicine (PM) is revolutionizing biomedical and clinical research while improving the ways healthcare is delivered. The EU is at the forefront of science and innovation in this field, increasing collaborations worldwide. This paper aims to assess the status of recent collaborations between Europe and China in PM-related science, technology and funded research. Methods: We analyze scientific literature, patents and funding programs, respectively. Results: PM is a scientific and industrial priority in both geographical areas, but current levels of collaboration are suboptimal. To increase these levels, policy makers should promote cooperation between researchers, innovators, industries, regulators, funding agencies and healthcare systems, while providing a forum to exchange best practices, define common guidelines for PM implementation and promote public-private partnerships.
    Keywords:  China; Europe; ICPerMed; Sino-EU PerMed; bibliometric; collaboration; patentometric; patents; personalized medicine; publications; technology
  42. Membranes (Basel). 2021 May 31. pii: 421. [Epub ahead of print]11(6):
      The aim of this work was to carry out a systematic literature review focused on the scientific production, trends, and characteristics of a knowledge domain of high worldwide importance, namely, the use of chitosan as a coating for postharvest disease biocontrol in fruits and vegetables, which are generated mainly by fungi and bacteria such as Aspergillus niger, Rhizopus stolonifera, and Botrytis cinerea. For this, the analysis of 875 published documents in the Scopus database was performed for the years 2011 to 2021. The information of the keywords' co-occurrence was visualized and studied using the free access VOSviewer software to show the trend of the topic in general. The study showed a research increase of the chitosan and nanoparticle chitosan coating applications to diminish the postharvest damage by microorganisms (fungi and bacteria), as well as the improvement of the shelf life and quality of the products.
    Keywords:  biocontrol; chitosan; coating; fruit; postharvest; vegetables
  43. Fam Med. 2021 Jun;53(6): 416-422
      BACKGROUND AND OBJECTIVES: Representation of women in medicine is increasing, including in academic family medicine. Despite this, women continue to hold a minority of senior faculty and leadership roles. This study examines the trends of women first and senior authorship between 2002 and 2017 in five family medicine journals: Family Medicine, Journal of Family Practice, Journal of the American Board of Family Medicine, Annals of Family Medicine, and American Family Physician. The study also examines gender congruence between first and senior authors and women's membership on editorial boards.METHODS: We collected and analyzed data on a total of 1,671 original articles published in the five family medicine journals in 2002, 2007, 2012, and 2017. We also examined the gender composition of the journals' editorial boards.
    RESULTS: Overall, women first authorship increased significantly from 32.6% in 2002 to 47.7% in 2017. There was no significant difference in women senior authorship or editorial board representation from 2002 to 2017. Both men and women senior authors partnered with women first authors significantly more over the 15 years.
    CONCLUSIONS: While there was a statistically significant increase in women first authors between 2002 and 2017, there is still a gap between women's authorship and editorial board representation and their representation within academic family medicine. These gaps could help to explain the continued lack of women represented within senior faculty positions.
  44. J Glaucoma. 2021 Jun 01. 30(6): e305-e311
      PRCIS: During the past quarter century, the rate of glaucoma-related publication in general ophthalmology journals increased due to higher representation in "experimentally oriented" journals. The rate of glaucoma randomized controlled clinical trial (RCT) articles decreased during the same time period.PURPOSE: To evaluate trends in rate of glaucoma publications in leading general ophthalmology journals over the past quarter century.
    MATERIALS AND METHODS: Q1 ophthalmology journals Web sites were reviewed. Only journals not limited to certain subspecialty were considered "general" and included in the analysis. In addition we categorized journals orientation as either "clinical" or "experimental." The PubMed search engine was used to collect publications from the selected journals between January 1, 1995 to December 31, 2019. Publications captured by "glaucoma" or "ocular hypertension" filters were considered glaucoma related. The fraction of glaucoma articles out of total number of articles within each year for each journal was calculated. A linear mixed effects model was applied to detect trends in glaucoma publication rates during the study period.
    RESULTS: Eight journals were included: 4 "clinically oriented" and 4 "experimentally oriented." The PubMed search yielded 72,750 publications, of which 9329 (12.8%) considered "glaucoma related." Percentage of glaucoma publications remained stable within "clinically oriented" journals, and significantly increased within "experimentally oriented" journals (annual change of 0.3%, P<0.001). The number of glaucoma-related RCTs decreased significantly in each (annual change of -0.21% and -0.13%, respectively, P<0.05).
    CONCLUSIONS: There has been a significant rise in the rates of glaucoma publications in "experimentally oriented" journals, while their representation in "clinically oriented" journals remained stable over the past quarter century. This change might be due to the increasing efforts to develop more advanced methods for evaluation and treatment in glaucoma, although still unable to address clinical demands. The decrease in glaucoma-related RCT articles might indicate reduced funding for such research.
  45. PeerJ Comput Sci. 2021 ;7 e526
      Today, increased attention is drawn towards network representation learning, a technique that maps nodes of a network into vectors of a low-dimensional embedding space. A network embedding constructed this way aims to preserve nodes similarity and other specific network properties. Embedding vectors can later be used for downstream machine learning problems, such as node classification, link prediction and network visualization. Naturally, some networks have text information associated with them. For instance, in a citation network, each node is a scientific paper associated with its abstract or title; in a social network, all users may be viewed as nodes of a network and posts of each user as textual attributes. In this work, we explore how combining existing methods of text and network embeddings can increase accuracy for downstream tasks and propose modifications to popular architectures to better capture textual information in network embedding and fusion frameworks.
    Keywords:  Community detection; Graph embeddings; Graph visualization; Information fusion; Link prediction; Network science; Node classification; Node clustering; Text embeddings
  46. Int J Environ Res Public Health. 2021 May 27. pii: 5743. [Epub ahead of print]18(11):
      Objectives: Inadequate oral hygiene still leads to many serious diseases all over the world. Therefore, this study aimed to analyze scientific research in the field of oral health in order to be able to comprehend their relevant subject areas, research connections, or developments. Methods: This study aimed to assess the global publication output on oral hygiene to create a world map that provides background information on key players, trends, and incentives of research. For this purpose, established bibliometric parameters were combined with state-of-the-art visualization techniques. Results: This study shows the actual key players of research on oral hygiene in high-income economies with only marginal participation from lower economies. This still corresponds to the current burden situations, but they are more and more shifting to the disadvantage of the low-income countries. There is a clear North-South and West-East gradient, with the USA and the Western European nations being the most publishing nations on oral hygiene. As an emerging country, Brazil plays a role in the research. Conclusions: The scientific power players were concentrated in high-income countries. However, the changing epidemiological situation requires a different scientific approach to oral hygiene. This requires an expansion of the international network to meet the demands of future global oral health burdens, which are mainly related to oral hygiene.
    Keywords:  bibliometrics; oral health; oral health burden; publication output; socio-economic influences