bims-evares Biomed News
on Evaluation of research
Issue of 2021‒03‒28
forty-eight papers selected by
Thomas Krichel
Open Library Society

  1. Dent Traumatol. 2021 Mar 22.
      BACKGROUND/AIM: Dr. Jens Ove Andreasen, the "father" of dental traumatology, passed away on September 26, 2020. As a tribute, the aim of this study was to catalog and analyze the top 100 most-cited papers (co)authored by Dr. Andreasen.MATERIALS AND METHODS: A bibliometric analysis was conducted on October 21, 2020, in the Web of Science Core Collection (WoS-CC) database. The numbers of citations in the WoS "All Databases" section, Scopus, and Google Scholar databases were cross-matched. Two researchers collected the following bibliometric data: title, number of citations, authors, country, year, journals, study design, and theme. The VOSviewer software was used to generate collaborative network maps for the authors and keywords.
    RESULTS: Of 194 papers identified in WoS-CC, a list was compiled with the 100 most-cited papers (co)authored by Dr. Andreasen. The number of citations of each paper ranged from 24 to 365 (mean: 85.4). Nine papers were cited more than 200 times. Most papers were published in Dental Traumatology (55%), between the 1990's and 2000's (60%), with a laboratory design (40%). One hundred and nine (co)authors, from 19 countries were identified in the top 100 most-cited papers. Dental traumatology was the most studied theme (52%).
    CONCLUSIONS: The top 100 most-cited papers (co)authored by Dr. Jens Ove Andreasen were composed mainly of laboratory and observational studies, published mostly in Dental Traumatology. The present study was a humble homage to highlight the importance of his research and work. However, his legacy goes beyond the numbers and will always remain unsurpassed.
    Keywords:  Jens Ove Andreasen; bibliometrics; dental traumatology; tribute
  2. Sci Prog. 2021 Jan-Mar;104(1):104(1): 368504211000535
      Drug-induced liver injury (DILI) is one of the common adverse drug reactions and the leading cause of drug development attritions, black box warnings, and post-marketing withdrawals. Current biomarkers are suboptimal in detecting DILI and predicting its outcome. This study aimed to quantitatively and qualitatively investigate the research trends on DILI biomarkers using bibliometric analysis. All relevant publications were extracted from the Web of Science database. An online analysis platform of literature metrology, bibliographic item co-occurrence matrix builder, and CiteSpace software were used to analyze the publication trends. CitNetExplorer was used to construct direct citation networks and VOSviewer was used to analyze the keywords and research hotspots. We found a total of 485 publications related to DILI biomarkers published from 1991 to 2020. Toxicological Sciences had been the most popular journal in this field over the past 30 years. The USA maintained a top position worldwide and provided a pivotal influence, followed by China. Among all the institutions, the University of Liverpool was regarded as a leader for research collaboration. Moreover, Professors Paul B. Watkins and Tsuyoshi Yokoi made great achievements in topic area. We analyzed the citation networks and keywords, therefore identified five and six research hotspot clusters, respectively. We considered the publication information regarding different countries/regions, organizations, authors, journals, et al. by summarizing the literature on DILI biomarkers over the past 30 years. Notably, the subject of DILI biomarkers is an active area of research. In addition, the investigation and discovery of novel promising biomarkers such as microRNAs, keratin18, and bile acids will be future developing hotspots.
    Keywords:  Drug-induced liver injury; bibliometrics; biomarkers
  3. J Orthop Surg Res. 2021 Mar 22. 16(1): 207
      STUDY DESIGN: A bibliometric review of the literature.OBJECTIVE: To identify the most frequently cited articles relating to the repair of intervertebral disc (IVD) and to summarize the key points and findings of these highly cited works, to quantify their impact on the developments of the disc disease treatment. IVD repair is an ever-growing and multi-disciplinary innovating treatment method for disc diseases. There are numerous literatures and related studies about it, promoting the development of the field. A comprehensive review and analysis of the most influential articles can help clarify the most effective strategy of IVD repair, and discover the promising directions for future research.
    METHODS: The Thomson Reuters Web of Knowledge was searched for citations of all literatures relevant to IVD repair. The number of citations, key points, categories, authorships, years, journals, countries, and institutions of publications were analyzed.
    RESULTS: The most highly cited articles in IVD Repair were published over 30 years, between 1991 and 2017. Most works (No. 41) were published between 2005 and 2009. The most-cited article was Sakai's 2003 article which described the possibility of combining MSC and gel to repair IVD. The three most popular categories involved were Orthopedics [44], Clinical Neurology [34], Engineering, and Biomedical [24]. The three most common topics were regenerative medicine and the progenitor cells [33], biomaterials and cellular scaffolds [29], application of growth factors [25]. Author Masuda and the partners have 4 articles in the top 100 list. The Rush University has 12 articles in the top 100 list.
    CONCLUSION: This report identifies the top 100 articles in IVD repair and acknowledges those individuals who have contributed the most to the study of the IVD repair and the body of knowledge used to the repair strategy making. It allows insight into the trends of this innovative and interdisciplinary subspecialty of spine surgery.
  4. Adicciones. 2021 Mar 11. 0(0): 1550
      Addictive disorders are a serious health problem to which large amounts of research resources are devoted. This study aims to analyze the evolution and scientific impact of the publications derived from the funding of research projects by the Spanish National Plan on Drugs (PNSD). The list of grants awarded was provided by the PNSD. Derived publications were obtained by asking the principal investigators of the grants and searching in the Web of Science and Scopus. Bibliometric indicators and evolutive trends of scientific production per project were calculated. On average, the PNSD conferred 15 annual grants to research projects, with an annual amount close to one million euros (€944,200.64) and an average amount per grant of just over €60,000, being higher in basic research and in alcohol. 71,9% of the grants had derived publications and almost half of them produced between one and three publications, with basic research being the most prolific. The international journal in which most articles were published was Psychopharmacology (50) and among Spanish journals, Adicciones stood out (28). A high level of co-authorship and international collaboration was identified. Most of the PNSD-funded projects produced research articles, many of them in journals belonging to the first and second quartiles of the Journal Citation Reports. The results of this study have revealed the scientific impact of the PNSD research projects funding and may contribute to determining future funding priorities.
  5. CNS Neurosci Ther. 2021 Mar 25.
      BACKGROUND: The neurovascular unit (NVU) is emerging as a potential therapeutic target in neurological conditions, such as stroke, brain injury, Alzheimer's disease, and Parkinson's disease; meanwhile, stroke is the second leading cause of death globally. The purpose of the study is to analyze the most influential articles, authors, countries, and topics in the role of NVU in stroke.METHODS: The Web of Science (WoS) database was used for bibliometric analysis using the search terms "Stroke" and "Neurovascular unit" on January 1st, 2021. Data were extracted from the WoS database to identify collaborations between authors, countries, organizations, and keywords using VOSviewer (1.6.16 mac). Two bibliometric indicators, the activity index (AI) and category normalized citation impact (CNCI), were computed. The keywords of bursts were also identified by CiteSpace.
    RESULTS: A total of 770 articles were analyzed by VOSviewer. AIs and CNCIs were computed of the eighteen countries according to VOSviewer co-authorship analysis results. The majority of authors mainly came from the United States and Japan. Romania, Hungary, and Poland have emerged as rising-star countries. In the 100 most-cited articles, the number of citations ranged from 1873 to 69, with a total of 15,758 citations. Most articles were published in 2011 and 2012 (n = 13 each), followed by 2009 (n = 11) and 2013, 2014, and 2015 (n = 8 each). Stroke and Journal of Cerebral Blood Flow and Metabolism were the two top journals. EH Lo from Harvard University/ Massachusetts General Hospital was the top first author and corresponding author. Harvard University/Massachusetts General Hospital was the most productive affiliated institution with 15 publications.
    CONCLUSION: There has been growing attention and efforts made in the field of stroke and NVU. The merit of the above findings may help to shape the research policy in ischemic stroke both at the country and institutional level.
    Keywords:  bibliometric analysis; blood-brain barrier; neuroprotection; neurovascular unit; stroke
  6. BMJ Open. 2021 Mar 23. 11(3): e037935
      OBJECTIVE: Scientific authorship is a vital marker of achievement in academic careers and gender equity is a key performance metric in research. However, there is little understanding of gender equity in publications in biomedical research centres funded by the National Institute for Health Research (NIHR). This study assesses the gender parity in scientific authorship of biomedical research.DESIGN: Descriptive, cross-sectional, retrospective bibliometric study.
    SETTING: NIHR Oxford Biomedical Research Centre (BRC).
    DATA: Data comprised 2409 publications that were either accepted or published between April 2012 and March 2017. The publications were classified as basic science studies, clinical studies (both trial and non-trial studies) and other studies (comments, editorials, systematic reviews, reviews, opinions, book chapters, meeting reports, guidelines and protocols).
    MAIN OUTCOME MEASURES: Gender of authors, defined as a binary variable comprising either male or female categories, in six authorship categories: first author, joint first authors, first corresponding author, joint corresponding authors, last author and joint last authors.
    RESULTS: Publications comprised 39% clinical research (n=939), 27% basic research (n=643) and 34% other types of research (n=827). The proportion of female authors as first author (41%), first corresponding authors (34%) and last author (23%) was statistically significantly lower than male authors in these authorship categories (p<0.001). Of total joint first authors (n=458), joint corresponding authors (n=169) and joint last authors (n=229), female only authors comprised statistically significant (p<0.001) smaller proportions, that is, 15% (n=69), 29% (n=49) and 10% (n=23) respectively, compared with male only authors in these joint authorship categories. There was a statistically significant association between gender of the last author with gender of the first author (p<0.001), first corresponding author (p<0.001) and joint last author (p<0.001). The mean journal impact factor (JIF) was statistically significantly higher when the first corresponding author was male compared with female (Mean JIF: 10.00 vs 8.77, p=0.020); however, the JIF was not statistically different when there were male and female authors as first authors and last authors.
    CONCLUSIONS: Although the proportion of female authors is significantly lower than the proportion of male authors in all six categories of authorship analysed, the proportions of male and female last authors are comparable to their respective proportions as principal investigators in the BRC. These findings suggest positive trends and the NIHR Oxford BRC doing very well in gender parity in the senior (last) authorship category. Male corresponding authors are more likely to publish articles in prestigious journals with high impact factor while both male and female authors at first and last authorship positions publish articles in equally prestigious journals.
    Keywords:  change management; education & training (see medical education & training); health policy; natural science disciplines; organisational development; statistics & research methods
  7. J Craniofac Surg. 2021 Mar 22.
      ABSTRACT: Maxillofacial injuries are widely investigated worldwide as it consists a significant portion of trauma patients. Many researchers from various regions have reported the clinical and statistical analyses of maxillofacial fractures (MFFs) as the statistical data of MMFs are of great importance for both effective control and prevention of these cases. The number of studies concerning the diagnosis and treatment modalities of MFFs has significantly increased over the years. The bibliometric method was used to analyze publication outputs, countries, journals, most citations, and trends. In this study, the bibliometric analysis method was used in the publications related to MFFs published between 1980 and 2019, which were Science Citation Index Expanded indexed in the Web of Science database. Bibliometric analysis is applied to evaluate existing data in an evidence-based manner. The highest number of scientific articles on MFFs came from the USA, which was also the most cited country among others. When the distribution of the words in abstracts and titles by years was examined, it was seen that there was a significant change in the words "navigation," "computer," and "technology" between 2009 and 2012. The authors predict that our study would provide a novel perspective to the studies about MFFs and contribute to the researchers about the limits of the topic, and being aware of the active journals that publish the papers on this issue would facilitate the work of the researchers.
  8. Clin Spine Surg. 2021 Mar 23.
      STUDY DESIGN: Bibliometric and visualization analysis.OBJECTIVE: Lumbar spinal stenosis (LSS) has become a common health problem and the most frequent indication for spinal surgery. This study aimed to illustrate the overall knowledge structure, and development trends of LSS, using a bibliometric analysis and newly developed visualization tools.
    MATERIALS AND METHODS: Research data sets were acquired from the Web of Science. The time span was defined as "2000-2019". VOS viewer and Citespace software was provided to analyze the data and generate visualization knowledge maps. Annual trend of publications, distribution, H-index status, co-authorship status and research hotspots were analyzed.
    RESULTS: A total of 1934 publications met the requirement. The United States published most papers (521, 26.9%), both total citations (17,626) and H-index (61) ranked first of all the countries. The most productive organizations on LSS is Seoul National University (50). Spine (43) published the most papers on LSS. Quality of life, risk factor, disability, double blind trials, and decompression surgery are the research hotspots in the recent years.
    CONCLUSION: The number of publications showed an upward trend with a stable rise in recent years. The United States is a country with the highest productivity, not only in quality, but also in quantity. Seoul National University has been the largest contributor in this field. Spine is the best journal related to LSS. Quality of life, risk factor, disability, and decompression surgery are the research hotspots in the recent years. Indeed, this study provides a new insight to the growth and development of LSS. Moreover, it will contribute to the growth of the international frontier of LSS.
  9. Am J Gastroenterol. 2021 Mar 22.
      INTRODUCTION: The purpose of this study was to find out whether dissemination of gastroenterology and hepatology (GI) research on social media networks correlates with citation count at 5 years.METHODS: We correlated the Altmetric Attention Score with Web of Science citation counts at 5 years for scholarly work published in the 10 highest impact factor GI journals in 2014.
    RESULTS: In 4,026 analyzed items, the correlation (r) between Altmetric Attention Score and citations at 5 years was 0.62 (P < 0.001), representing strong correlation. Twitter was the platform with the strongest correlation with citations.
    DISCUSSION: Social media attention garnered by GI scholarly work strongly correlates with the number of citations at 5 years.
  10. Biomed Res Int. 2021 ;2021 5528582
      Background: With a long tradition and outstanding contributions over time, medical scientific research in Romania has experienced major changes in the last two decades, marked by an increase in scientific publications, originating especially from university centers and fostered by national regulations on publication standards required for professional promotion. This study is aimed at assessing the literature on surgical oncology in Romania, published by Romanian authors in journals indexed in international databases.Materials and Methods: A literature search was performed, focused on surgical oncology performed in Romania. Two databases, PubMed and Web of Science (WoS), were finally selected and included in the study, which included bibliometric parameters and subject analysis.
    Results: The PubMed search retrieved 464,295 articles being published in only 3 Romanian journals, Chirurgia, The Medical-Surgical Journal (Iasi), and Romanian Journal of Morphology and Embryology. The search of the Web of Science retrieved 494 records on the subject of surgical oncology in Romania, 449 of which were published after 1989. The 494 articles received 2,102 citations, 4.26 per year, and an overall Hirsch index of 21. Most articles were published in the same 3 Romanian journals as in PubMed. Neoplasms of the digestive system prevailed, followed by articles on general surgical oncology issues, cancer research, and therapy. Bucharest has the highest number of authors, followed by Cluj-Napoca and Iasi.
    Conclusion: Research originating from Romania in the field of surgical oncology is present and visible at an international level mainly through Romanian journals. Sustained effort is required from surgical oncology authors to be published in international journals on this subject, as it is the only way to increase global visibility and impact.
  11. Ann Palliat Med. 2021 Mar 16. pii: apm-20-2050. [Epub ahead of print]
      BACKGROUND: Thousands of papers on acute respiratory distress syndrome (ARDS) have been published in the last decade. This study aimed to evaluate the research hotspots and future trends in ARDS research using bibliometric analysis.METHODS: All relevant literature on ARDS published between 2010 and 2019 was retrieved from the Web of Science Core Collection database, and the retrieval strategy was TS = (ARDS OR acute respiratory distress syndrome). Bibliometric analysis was conducted using VOSviewer and the online bibliometric analysis platform based on retrieved data. Bibliographic Item Co-occurrence Matrix Builder (BICOMB) and gCLUTO software were used to evaluate and visualize the results, and to explore the hotspots in the field of ARDS.
    RESULTS: A total of 9,858 ARDS research articles dated between 2010 and 2019 were included. The dominant position of the United States in global ARDS research throughout this 10-year period was evident, and it was also the country most frequently involved in international cooperation. The University of Toronto was the most productive institution and a leader in research collaboration. Critical Care Medicine was the most productive journal in terms of the number of publications on ARDS. Further, Matthay MA, Pelosi P, Slutsky AS, and Thompson BT all made significant contributions to ARDS research. A total of 37 most frequent keywords were identified and belonged to 5 hotspots: (I) adult and pediatric ARDS; (II) life-support monitoring parameters and therapy in severe patients with ARDS; (III) molecular mechanisms of acute lung injury; (IV) influenza-related pneumonia; and (V) severe complications of ARDS. Also, in the last 5 years, the keywords "biomarkers", "pathway", "NF-κB", "epidemiology", "life-support", and "ECMO" began to appear in the ARDS research field.
    CONCLUSIONS: In the decade from 2010 to 2019, the United States was a global leader in ARDS research, and hotspots included epidemiology, mechanisms, monitoring parameters, and therapy, especially mechanical ventilation. Our results suggest that the mechanisms of ARDS and novel life-support therapies will remain research hotspots in the future. International collaboration is also expected to widen and deepen in the field of ARDS research.
    Keywords:  Acute respiratory distress syndrome (ARDS); VOSviewer; bibliometric analysis; hotspots
  12. Biomed Pharmacother. 2021 Mar 20. pii: S0753-3322(21)00295-X. [Epub ahead of print]138 111510
      To provide a clear landscape, trends, and research frontiers of gene therapy, we systematically retrieved a total of 62,961 peer-viewed studies published between 1996 and 2020 from the Scopus, Web of Science, and 42,120 Inpadoc patent families from Derwent Innovation databases. Multiple bibliometric approaches suggest that gene therapy began to recover in 2013 after a period of significant decline. However, metrics in terms of authors and scholarly output growth, FWCI, annual citations, percentage of high-impact journal literature, and patent-citations per scholarly output are still weak at this stage, indicating a lack of research momentum. We also visualized gene therapy's knowledge structure by employing citation analysis, co-citation analysis, and co-word analysis, revealing its research hotspots and trends by text mining with Natural Language Processing. For the current predicament, we propose that the future success of gene therapy may depend on breakthroughs in more advanced and exhilarating technologies such as the CRISPR-Cas system, CAR-T cell therapies, and gene delivery vector technology. The results show that evidence-based bibliometrics allows the dissection of gene therapy to inform scientific planning and decision-making.
    Keywords:  Gene therapy; Life cycle; Research hotspots; SciVal; Visualization
  13. Malar J. 2021 Mar 20. 20(1): 158
      BACKGROUND: China has accumulated considerable experience in malaria control and elimination over the past decades. Many research papers have been published in Chinese journals. This study intends to describe the development and experience of malaria control and elimination in China by quantitatively analysing relevant research using a bibliometric analysis.METHODS: A long-term, multistage bibliometric analysis was performed. Research articles published in Chinese journals from 1980 to 2019 were retrieved from the Wanfang and China National Knowledge Infrastructure (CNKI) databases. Year of publication, journal name and keywords were extracted by the Bibliographic Items Co-occurrence Matrix Builder (BICOMB). The K/A ratio (the frequency of a keyword among the total number of articles within a certain period) was considered an indicator of the popularity of a keyword in different decades. VOSviewer software was used to construct keyword co-occurrence network maps.
    RESULTS: A total of 16,290 articles were included. The overall number of articles continually increased. However, the number of articles published in the last three years decreased. There were two kinds of keyword frequency trends among the different decades. The K/A ratio of the keyword 'Plasmodium falciparum' decreased (17.05 in the 1980s, 13.04% in the 1990s, 9.86 in the 2000s, 5.28 in the 2010s), but those of 'imported case' and 'surveillance' increased. Drug resistance has been a continuous concern. The keyword co-occurrence network maps showed that the themes of malaria research diversified, and the degree of multidisciplinary cooperation gradually increased.
    CONCLUSIONS: This bibliometric analysis revealed the trends in malaria research in China over the past 40 years. The results suggest emphasis on investigation, multidisciplinary participation and drug resistance by researchers and policymakers in malaria epidemic areas. The results also provide domestic experts with qualitative evidence of China's experience in malaria control and elimination.
    Keywords:  Academic articles; Anopheles; Bibliometric analysis; Malaria; Plasmodium
  14. Scientometrics. 2020 Oct;125(1): 271-287
      Computer science has experienced dramatic growth and diversification over the last twenty years. Towards a current understanding of the structure of this discipline, we analyze a large sample of the computer science literature from the DBLP database. For insight on the features of this cohort and the relationship within its components, we have constructed article level clusters based on either direct citations or co-citations, and reconciled them with major and minor subject categories in the All Science Journal Classification (ASJC). We describe complementary insights from clustering by direct citation and co-citation, and both point to the increase in computer science publications and their scope. Our analysis reveals cross-category clusters, some that interact with external fields, such as the biological sciences, while others remain inward looking. Overall, we document an increase in computer science publications and their scope.
    Keywords:  01A85; 01A90; Bibliometrics; Clustering; Computer Science; DBLP; Research Evaluation
  15. Heliyon. 2021 Mar;7(3): e06406
      Micro Electro Mechanical System (MEMS) energy harvester's research interests have been increasing rapidly, indicating that the topic has given significant contributions to the sustainable development of energy alternatives. Although many research activities have been conducted and reported since several years ago, only limited efforts have been made to analyze the research's impact in this area. In this paper, we report a bibliometric analysis on the research progress in MEMS for energy harvester. VOSviewer software is used to support the analyst that includes the distributions of the publication journals, authors, affiliations and the highly cited papers reporting the progress as well as the frequency of keywords and their relationships found in the search engine. The analysis is mainly aimed to identify the research map based on publication reports. 1772 papers were initially identified and summarized based on the analysis on three focused mainstream research topics in MEMS for alternative energy, such as MEMS energy harvester, power harvesting and energy scavenging, other term analogies to MEMS such as micromachines and microsystem were included in the analysis parameter. As a result, it is found that the study on the MEMS energy harvester is mostly categorized in the engineering field, while China has been conducting the most projects. The Journal MEMS and Journal of Micromechanics and Microengineering have been the most journals publishing reports on MEMS energy harvester's research progress. Based on these analyses, some potential issues in future MEMS energy harvester research have been identified, including the contributions of new materials, the MEMS new structure's involvement, and the optimization of the vibration concepts and principles of MEMS energy harvester. These analyses would give an overview on the progress of the development and improvement in MEMS energy harvester and give a proper guideline for future MEMS research in the energy field.
    Keywords:  Bibliometric; Energy harvester; MEMS; VOSviewer
  16. Biosci Trends. 2021 Mar 19.
      Coronavirus Disease 2019 (COVID-19), caused by the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), has affected tens of millions of people globally since it was declared a pandemic by the World Health Organization (WHO) on March 11, 2020. There is an urgent need for safe and effective preventive vaccines to curb this pandemic. A growing amount of related research has been published. This study aimed to provide the current status of COVID-19 vaccine using bibliometric analysis. We searched and MEDLINE comprehensively and included articles, articles in press, reviews, short surveys, conference abstracts and conference papers about COVID-19 vaccine. VOSviewer1.6.11 (Leiden University, Leiden, Netherlands) was applied to perform the bibliometric analysis of these papers. A total of 1,312 papers were finally included. The BMJ has been the most popular journal in this field. The United States maintained a top position worldwide and has provided a pivotal influence, followed by China, India and United Kingdom. Among all the institutions, Harvard University was regarded as a leader for research collaboration. We analyzed the keywords and identified seven COVID-19 vaccine research hotspot clusters. COVID-19 vaccine research hotspots focus on clinical trials on vaccine safety and efficacy, research on vaccine immunology and immunoinformatics, and vaccine hesitancy. Our analysis results demonstrated that cooperation between countries, institutions, and authors were insufficient. The results suggested that clinical trials on vaccine safety, efficacy, immunology, immunoinformatics, production and delivery are research hotspots. Furthermore, we can predict that there will be a lot of research focusing on vaccine adverse reactions.
    Keywords:  COVID-19; VOSviewer; bibliometric analysis; vaccine
  17. Hip Pelvis. 2021 Mar;33(1): 18-24
      Purpose: We classified the articles published in the journal Hip & Pelvis and analyzed the relationship between study characteristics and citation rates.Materials and Methods: All articles published in Hip & Pelvis from 2009 to 2019 were included. We classified the articles according to the type, language, listing in PubMed Central (PMC), treatment modality, material, design, anatomical focus, number of authors, and number of cases. We analyzed the citation rate according to this classification, with yearly citation rate reflecting the exposure period until March 2020.
    Results: The yearly citation rate increased significantly after the language of the journal was changed from Korean to English in June 2014 (mean=0.96 vs. 1.63, P<0.05), and again after the journal was listed in PMC in March 2016 (mean=1.05 vs. 1.92, P<0.05). The yearly citation rates of review articles was highest, followed by those of editorials, original articles, and case reports (in this order). Among original articles, trauma-related articles had higher yearly citation rates than non-trauma-related articles (mean=1.00 vs. 0.68, P=0.034). Among clinical articles, studies focusing on the pelvis had higher yearly citation rates than studies on the hip or femur (mean=1.85 vs. 0.71 vs. 0.91, P=0.003).
    Conclusion: The yearly citation rate of articles increased significantly after the language of Hip & Pelvis was changed to English and after the journal was listed in PMC. The mean yearly citation rate of articles focusing on the pelvis was significantly higher than that of articles focusing on the hip or femur.
    Keywords:  Citation rate; Hip & Pelvis; Language; PubMed; Type
  18. Ocul Surf. 2021 Mar 20. pii: S1542-0124(21)00016-1. [Epub ahead of print]20 212-214
    Keywords:  Bibliometric analysis; Citations; Impact; Meibomian gland; Meibum; Publication metrics
  19. Oman Med J. 2021 Mar;36(2): e237
      Objectives: To date, the quantity and the quality of research publications conducted within the Oman Medical Specialty Board (OMSB) have not been assessed. In this review, we sought to assess the quantity and quality of research publications affiliated with the OMSB.Methods: We retrieved data systematically from PubMed, Scopus, Web of Science, and Google Scholar. We searched all publications published until December 2018.
    Results: A total of 133 published articles affiliated with the OMSB were retrieved. Half of the publications were original studies, and 30.8% were case reports or series. Reviews and editorials represented 6.8% and 8.3%, respectively. Among the original studies, 79.4% were cross sectionals and 50.0% were retrospective in nature. Among the prospective studies, 58.8% were questionnaire-based surveys. The impact factors of the journals ranged between 0.82 and 4.40, except for one journal with an impact factor of 15.10.
    Conclusions: The quantity and quality of the publications from the OMSB is still low. However, training and policy change in the residency curriculum is key to improve the status.
    Keywords:  Bibliometrics; Publications; Specialty Boards
  20. Surg Neurol Int. 2021 ;12 76
      Background: Utilizing the Brazilian Medical Demography analysis and a literature review, we evaluated how women choose to become neurosurgeons in Brazil and around the world, specifically citing the Europe, the USA, India, and Japan.Methods: We utilized the Brazilian Medical Demography prepared by the Federal Council of Medicine and the Regional Council of Medicine of the State of São Paulo (2011, 2013, 2015, and 2018). We also included an evaluation of 20 articles from PubMed, the Scientific Electronic Library Online, and National Health Library databases (e.g., using descriptors "Women in neurosurgery" and "Career").
    Results: In Brazil in 2017, women comprised 45.6% of active doctors, but only 8.6% of all neurosurgeons. Of 20 articles identified in the literature, 50% analyzed the factors that influenced how women choose neurosurgery, 40% dealt with gender differences, while just 10% included an analysis of what it is like to be a female neurosurgeon in different countries/continents.
    Conclusion: The participation of women in neurosurgery has increased in recent years despite the persistence of gender inequality and prejudice. More women need to be enabled to become neurosurgeons as their capabilities, manual dexterity, and judgment should be valued to improve the quality of neurosurgical health-care delivery.
    Keywords:  Carrier; Gender disparity; Neurosurgery; Prejudice; Women in neurosurgery
  21. Global Health. 2021 Mar 25. 17(1): 31
      BACKGROUND: At the global level and in the Arab world, particularly in low-income countries, COVID-19 remains a major public health issue. As demonstrated by an incredible number of COVID-19-related publications, the research science community responded rapidly. Therefore, this study was intended to assess the growing contribution of the Arab world to global research on COVID-19.METHODS: For the period between December 2019 and March 2021, the search for publications was conducted via the Scopus database using terms linked to COVID-19. VOSviewer 1.6.16 software was applied to generate a network map to assess hot topics in this area and determine the collaboration patterns between different countries. Furthermore, the research output of Arab countries was adjusted in relation to population size and gross domestic product (GDP).
    RESULTS: A total of 143,975 publications reflecting the global overall COVID-19 research output were retrieved. By restricting analysis to the publications published by the Arab countries, the research production was 6131 documents, representing 4.26% of the global research output regarding COVID-19. Of all these publications, 3990 (65.08%) were original journal articles, 980 (15.98%) were review articles, 514 (8.38%) were letters and 647 (10.55%) were others, such as editorials or notes. The highest number of COVID-19 publications was published by Saudi Arabia (n = 2186, 35.65%), followed by Egypt (n = 1281, 20.78%) and the United Arab Emirates (UAE), (n = 719, 11.73%). After standardization by population size and GDP, Saudi Arabia, UAE and Lebanon had the highest publication productivity. The collaborations were mostly with researchers from the United States (n = 968), followed by the United Kingdom (n = 661). The main research lines identified in COVID-19 from the Arab world are related to: public health and epidemiology; immunological and pharmaceutical research; signs, symptoms and clinical diagnosis; and virus detection.
    CONCLUSIONS: A novel analysis of the latest Arab COVID-19-related studies is discussed in the current study and how these findings are connected to global production. Continuing and improving future collaboration between developing and developed countries will also help to facilitate the sharing of responsibilities for COVID-19 in research results and the implementation of policies for COVID-19.
    Keywords:  Arab world; Bibliometric; COVID-19; Novel coronavirus; Scopus
  22. J Med Eng Technol. 2021 Mar 26. 1-16
      In recent years, the literature associated with wearable devices has grown rapidly, but few studies have used bibliometrics and a visualisation approach to conduct deep mining and reveal a panorama of the wearable devices field. To explore the foundational knowledge and research hotspots of the wearable devices field, this study conducted a series of bibliometric analyses on the related literature, including papers' production trends in the field and the distribution of countries, a keyword co-occurrence analysis, theme evolution analysis and research hotspots and trends for the future. By conducting a literature content analysis and structure analysis, we found the following: (a) The subject evolution path includes sensor research, sensitivity research and multi-functional device research. (b) Wearable device research focuses on information collection, sensor materials, manufacturing technology and application, artificial intelligence technology application, energy supply and medical applications. The future development trend will be further studied in combination with big data analysis, telemedicine and personalised precision medical application.
    Keywords:  Wearable device; development trend; hot topics; theme evolution
  23. Semin Ophthalmol. 2021 Mar 24. 1-6
      Purpose: To assess whether the type of peer-review (single-blinded vs double-blinded) has an impact on nationality representation in journals.Methods: A cross-sectional study analyzing the top 10 nationalities contributing to the number of articles across 16 ophthalmology journals.Results: There was no difference in the percentage of articles published from the journal's country of origin between the top single-blind journals and double-blind journals (SB = 42.0%, DB = 26.6%, p = .49), but there was a significant difference between the percentage of articles from the US (SB = 48.0%, DB = 22.8%, p = .02). However, there was no difference for both country of origin (SB = 38.0%, DB = 26.6%, p = .43) and articles from the US (SB = 35.0%, DB = 22.8%, p = .21) when assessing the top eight double-blind journals matched with single-blind journals of a similar impact factor. The US (n = 16, 100%) and England (n = 16, 100%) most commonly made the top 10 lists for article contribution. This held true even for journals established outside the United States (US=11/12, England = 11/12).Conclusions: There was no significant difference in country-of-origin representation between single-blind journals and double-blind journals. However, higher income countries contributed most often to the journals studied even among journals based outside the US.
    Keywords:  Peer review; disparity; masking
  24. J Am Coll Cardiol. 2021 Mar 30. pii: S0735-1097(21)00200-X. [Epub ahead of print]77(12): 1554-1561
      BACKGROUND: In 2016, the American Statistical Association stated that the use of statistical significance leads to distortion of the scientific process. The principal alternative to significance or null hypothesis testing (NHT) is estimation with point estimates and confidence intervals (CIs).OBJECTIVES: The aim of this study was to determine the time trend of statistical inference and statistical reporting style in abstracts in major cardiovascular journals.
    METHODS: A total of 84,250 abstracts published from 1975 to 2019 in 9 high-ranking cardiovascular journals (Circulation, Circulation Research, European Heart Journal, European Heart Journal: Cardiovascular Imaging, European Journal of Heart Failure, Journal of the American College of Cardiology, JACC: Cardiovascular Imaging, JACC: Cardiovascular Interventions, and JAMA Cardiology) were reviewed; in particular, proportions of abstracts containing statistical inference and its major variants (NHT, significance testing) were compared over time and among journals.
    RESULTS: Overall, 49,924 abstracts (59%) contained statistical inference. Among these abstracts, NHT was the most frequent reporting style of statistical inference (79% among all journals). Journals differed considerably in the prevalence of CI reporting (1% to 78% in 2017-2019). With the exception of 2 journals, the proportion of abstracts containing CIs was higher in the more recent period. From 2013-2015 to 2017-2019, the proportion of abstracts containing only CIs increased by 5 (95% CI: 0 to 10), 18 (95% CI: 15 to 21), and 9 (95% CI: 3 to 15) percentage points in the European Heart Journal, the Journal of the American College of Cardiology, and JACC: Cardiovascular Imaging, respectively.
    CONCLUSIONS: NHT is still the prevailing reporting style of statistical inference in major cardiovascular journals. Reporting of CIs in abstracts of major cardiovascular journals appears to be growing more popular.
    Keywords:  cardiovascular; confidence intervals; statistics; statistics and numerical data
  25. Scientometrics. 2021 Mar 12. 1-30
      Investigation of the topic of information literacy and its changes can be informative for researchers and provide a better understanding of the corresponding domains. This study conducted a topic model dynamic analysis of the articles on information literacy studies in the Web of Science core collection database that were published from 2005 to 2019. The global topics and their popularities, topical similarities and correlations, along with the evolution of temporal local topics and the diffusion of subject local topics were analyzed and presented. Nine global topics differed in terms of their temporal and subject characteristics, and this study focused on ability, technology, field, people, place and application of information literacy. For the temporal local topics, crossing was the main evolutionary mechanism; hence, the core topic words were relatively stable, but few new research directions have been explored in recent years. For the subject local topics, absorbing with division and absorbing were the main mechanisms, which supported the diffusion progress of information literacy studies among subjects. However, it is necessary to promote the development of future research through the innovative development of multidisciplinary integration. Researchers and practitioners should focus on the impact of information technology, increase the breadth and depth of the research field, and develop innovative evaluation methods that are based on data to promote the comprehensive, sustainable and effective improvement in information literacy.
    Keywords:  Information literacy; Topic evolution and diffusion; Topic modeling; Word embedding
  26. Laryngorhinootologie. 2021 Mar 24.
      INTRODUCTION:  The SARS-CoV-2 pandemic has led to profound limitations in patient care and student teaching at the University Hospitals of Otorhinolaryngology (ORL). In contrast, the impact on research has been variable. To classify the pandemic-related effect on research, the development of the number of scientific publications of the German ORL university hospitals before and during the pandemic was analyzed.MATERIAL AND METHODS:  The publication performance between 2015 and 2020 of the 39 current chairmen was surveyed using a literature search (Pubmed). All entries relating to the chairmen of the university hospital as first, last or co-author were included. The absolute and relative development of each author's publication performance was determined and evaluated using nonparametric statistical methods.
    RESULTS:  A total of 2420 publications could be documented. From 2015 to 2019, an average of 368 publications were published per year. In 2020, this number increased by 57.9 % to 581 publications. While the number of monthly publications remained constant between 2015 and 2019, a significant increase was seen from May 2020 up to a maximum of 74 publications in September 2020. In 2020, 34 articles (5.9 %) had a thematic relation to the SARS-CoV-2 pandemic, with 7 of these papers (20.6 %) resulting from cross-site publications.
    CONCLUSION:  In 2020, the number of scientific publications was raised to more than 1.5 times the usual annual publications. This increase was clearly related in time to the reduction of elective patient care during the SARS-CoV-2 pandemic starting in mid-March 2020. Probably, free time capacities enabled this increased publication output. Our results confirm the great scientific potential of the ORL university hospitals, which has been successfully implemented despite the pandemic.
  27. Brief Bioinform. 2021 03 22. 22(2): 800-811
      OBJECTIVE: This study aims at reviewing novel coronavirus disease (COVID-19) datasets extracted from PubMed Central articles, thus providing quantitative analysis to answer questions related to dataset contents, accessibility and citations.METHODS: We downloaded COVID-19-related full-text articles published until 31 May 2020 from PubMed Central. Dataset URL links mentioned in full-text articles were extracted, and each dataset was manually reviewed to provide information on 10 variables: (1) type of the dataset, (2) geographic region where the data were collected, (3) whether the dataset was immediately downloadable, (4) format of the dataset files, (5) where the dataset was hosted, (6) whether the dataset was updated regularly, (7) the type of license used, (8) whether the metadata were explicitly provided, (9) whether there was a PubMed Central paper describing the dataset and (10) the number of times the dataset was cited by PubMed Central articles. Descriptive statistics about these seven variables were reported for all extracted datasets.
    RESULTS: We found that 28.5% of 12 324 COVID-19 full-text articles in PubMed Central provided at least one dataset link. In total, 128 unique dataset links were mentioned in 12 324 COVID-19 full text articles in PubMed Central. Further analysis showed that epidemiological datasets accounted for the largest portion (53.9%) in the dataset collection, and most datasets (84.4%) were available for immediate download. GitHub was the most popular repository for hosting COVID-19 datasets. CSV, XLSX and JSON were the most popular data formats. Additionally, citation patterns of COVID-19 datasets varied depending on specific datasets.
    CONCLUSION: PubMed Central articles are an important source of COVID-19 datasets, but there is significant heterogeneity in the way these datasets are mentioned, shared, updated and cited.
    Keywords:  COVID-19; data sharing; review
  28. Ann Otol Rhinol Laryngol. 2021 Mar 24. 34894211004368
      OBJECTIVE: Scholastic activity through research involvement is a fundamental aspect of a physician's training and may have a significant influence on future academic success. Here, we explore publication rates before, during, and after otolaryngology residency training and whether publication efforts correlate with future academic achievement.METHODS: This cross-sectional analysis included a random sample of 50 otolaryngology residency programs. From these programs, we assembled a list of residents graduating from the years in 2013, 2014, and 2015. Using SCOPUS, PubMed, and Google Scholar, we compiled the publications for each graduate, and data were extracted in an independent, double-blinded fashion.
    RESULTS: We included 32 otolaryngology residency programs representing 249 residents in this analysis. Graduates published a mean of 1.3 (SD = 2.7) articles before residency, 3.5 (SD = 4.3) during residency, and 5.3 (SD = 9.3) after residency. Residents who pursued a fellowship had more total publications (t247 = -6.1, P < .001) and more first author publications (t247 = -5.4, P < .001) than residents without fellowship training. Graduates who chose a career in academic medicine had a higher number of mean total publications (t247 = -8.2, P < .001) and first author publications (t247 = -7.9, P < .001) than those who were not in academic medicine. There was a high positive correlation between residency program size and publications during residency (r = 0.76).
    CONCLUSION: Research productivity correlated with a number of characteristics such as future fellowship training, the pursuit of an academic career, and overall h-index in this study.
    Keywords:  ENT residency; academic medicine; otolaryngology residency; publication trends
  29. Nurs Open. 2021 Mar 25.
      AIM: Considering the increasing number of emerging infectious diseases, innovative approaches are strongly in demand. Additionally, research in this field has expanded exponentially. Thus, faced with this diverse information, we aim to clarify key concepts and knowledge gaps of technology in nursing and the field of infectious diseases.DESIGN: This scoping review followed the methodology of scoping review guidance from Arksey and O'Malley.
    METHODS: Six databases were searched systematically (PubMed, Web of Science, IEEE Explore, EBSCOhost, Cochrane Library and Summon). After the removal of duplicates, 532 citations were retrieved and 77 were included in the analysis.
    RESULTS: We identified five major trends in technology for nursing and infectious diseases: artificial intelligence, the Internet of things, information and communications technology, simulation technology and e-learning. Our findings indicate that the most promising trend is the IoT because of the many positive effects validated in most of the reviewed studies.
    Keywords:  infection control; infectious disease; nursing; nursing performance; quality of care; technology
  30. J Hand Surg Eur Vol. 2021 Mar 24. 17531934211002985
      Quotation error is an inaccuracy in the assertions made by authors when referencing another's work. This study aimed to assess the quotation errors in articles referencing the Distal Radius Acute Fracture Fixation Trial (DRAFFT). A literature search was performed to identify all citations of DRAFFT from 2014 to 2020. The relevant publications were assessed by two reviewers using a validated framework of error classification. There were 83 articles containing references to DRAFFT. There was substantial agreement between the two reviewers (Kappa coefficient 0.66). We found 22/83 (28%) of articles contained an error, with one article containing two errors. There were 12 major errors, which were not substantiated by, were unrelated to or contradicted the findings of DRAFFT, and 11 minor errors, including numerical inaccuracies, oversimplification or generalization. This study highlights that a significant number of articles inaccurately quote DRAFFT. Authors and journals should consider checking the accuracy of key referenced statements.
    Keywords:  Quotation error; distal radius acute fracture fixation trial; distal radius fracture
  31. Sci Rep. 2021 Mar 22. 11(1): 6575
      Since the introduction of small-world and scale-free properties, there is an ongoing discussion on how certain real-world networks fit into these network science categories. While the electrical power grid was among the most discussed examples of these real-word networks, published results are controversial, and studies usually fail to take the aspects of network evolution into consideration. Consequently, while there is a broad agreement that power grids are small-world networks and might show scale-free behaviour; although very few attempts have been made to find how these characteristics of the network are related to grid infrastructure development or other underlying phenomena. In this paper the authors use the 70-year-long historical dataset (1949-2019) of the Hungarian power grid to perform complex network analysis, which is the first attempt to evaluate small-world and scale-free properties on long-term real-world data. The results of the analysis suggest that power grids show small-world behaviour only after the introduction of multiple voltage levels. It is also demonstrated that the node distribution of the examined power grid does not show scale-free behaviour and that the scaling is stabilised around certain values after the initial phase of grid evolution.
  32. J Korean Med Sci. 2021 Mar 22. 36(11): e74
      In the era of digitization and Open Access, article-level metrics are increasingly employed to distinguish influential research works and adjust research management strategies. Tagging individual articles with digital object identifiers allows exposing them to numerous channels of scholarly communication and quantifying related activities. The aim of this article was to overview currently available article-level metrics and highlight their advantages and limitations. Article views and downloads, citations, and social media metrics are increasingly employed by publishers to move away from the dominance and inappropriate use of journal metrics. Quantitative article metrics are complementary to one another and often require qualitative expert evaluations. Expert evaluations may help to avoid manipulations with indiscriminate social media activities that artificially boost altmetrics. Values of article metrics should be interpreted in view of confounders such as patterns of citation and social media activities across countries and academic disciplines.
    Keywords:  Access to Information; Bibliography as Topic; Bibliometrics; Open Access Publishing; Periodicals as Topic
  33. Bioelectromagnetics. 2021 Mar 25.
      Previous meta-analyses have suggested an increased risk of amyotrophic lateral sclerosis (ALS) associated with occupational exposure to extremely low-frequency magnetic fields (ELF-MF). However, results should be interpreted with caution since studies were methodologically heterogeneous. Here, we assessed the feasibility of a pooling study to harmonize and re-analyze available original data. A systematic literature search was conducted. Published epidemiological studies were identified in PubMed and EMF-Portal from literature databases' inception dates until January 2019. The characteristics of all studies were described, including exposure metrics, exposure categories, and confounders. A survey among the principal investigators (PI) was carried out to assess their willingness to provide their original data. The statistical power of a pooling study was evaluated. We identified 15 articles published between 1997 and 2019. Studies differed in terms of outcome, study population, exposure assessment, and exposure metrics. Most studies assessed ELF-MF as average magnetic flux density per working day; however, exposure categories varied widely. The pattern of adjustment for confounders was heterogeneous between studies, with age, sex, and socioeconomic status being most frequent. Eight PI expressed their willingness to provide original data. A relative risk of ≥1.14 for ALS and occupational exposure to ELF-MF can be detected with a power of more than 80% in a pooled study. The pooling of original data is recommended and could contribute to a better understanding of ELF-MF in the etiology of ALS based on a large database and reduced heterogeneity due to a standardized analysis protocol with harmonized exposure metrics and exposure categories. Bioelectromagnetics. © 2021 Bioelectromagnetics Society.
    Keywords:  epidemiology; feasibility study; magnetic fields; non-ionizing radiation; occupation
  34. Ceska Gynekol. 2021 ;86(1): 40-45
      OBJECTIVE: An analysis of ethical studies related to uterus transplantation in the treatment of absolute uterine factor infertility.METHODS: Literary research using the Web of Science, Google Scholar and Pubmed databases with the following keywords: absolute uterine factor infertility, ethics, deceased donor, living donor, and uterus transplantation. An analysis of articles published in impact and reviewed journals between 2000-2021.
    RESULTS: Uterus transplantation is a promising treatment method for women with absolute uterine factor infertility. In the experimental studies, an ultimate goal of this complex treatment was repeatedly achieved: childbirth through a caesarean section. An important milestone towards the application of uterus transplantation in human was the Montreal criteria of its ethical feasibility, published in 2012-2013. In 2012, the first uterus transplant study from a living donor started in Sweden and, in 2016, further studies were initiated worldwide. The first childbirth from the transplanted uterus in 2014 increased the interest of ethicists in various aspects of this experimental treatment, and this trend continues. Current ethical analyzes are focused particularly on the comparison of advantages and disadvantages related to the utilization of living and deceased donors of uterus; comparing ethical aspects of gestational surrogacy and uterus transplantation; uterus transplantation as an extremely radical form of assisted reproduction; its impact on adoptions; uterus transplantation in trans-gender women; the importance of establishing an international registry for uterus transplants; and other important ethical issues associated with this complex form of assisted reproduction.
    CONCLUSION: Uterus transplantation is still in an experimental stage. The ethical analysis of the individual steps of this comprehensive method in the treatment of female infertility should be carried out continuously, in connection with the gradually presented outcomes of ongoing scientific research studies.
    Keywords:  absolute uterine factor infertility; deceased donor; ethics; living donor; uterus trans-plantation; uterus transplantation
  35. Int J Health Plann Manage. 2021 Mar 21.
      Ye and Zhang used inappropriate search keywords, databases, and methods published a bibliometric paper in the International Journal of Health Planning and Management. The comment pointed out the problems, evidence, and improved methods of the study. The authors missed many medication-adherence documents. However, many documents not related to medication-adherence are included. Finally, appropriate search keywords and methods are proposed.
    Keywords:  SCI-EXPANDED; bibliometric; front page; medication-adherence; searching keywords
  36. J Am Acad Dermatol. 2021 Mar 23. pii: S0190-9622(21)00617-4. [Epub ahead of print]
    Keywords:  bibliometric analysis; dermatology; diversity and inclusion; ethnic skin; health disparities; health equity; medical journalism; skin of color
  37. Patterns (N Y). 2021 Mar 12. 2(3): 100210
      The institutional review of interdisciplinary bodies of research lacks methods to systematically produce higher-level abstractions. Abstraction methods, like the "distant reading" of corpora, are increasingly important for knowledge discovery in the sciences and humanities. We demonstrate how abstraction methods complement the metrics on which research reviews currently rely. We model cross-disciplinary topics of research publications and projects emerging at multiple levels of detail in the context of an institutional review of the Earth Research Institute (ERI) at the University of California at Santa Barbara. From these, we design science maps that reveal the latent thematic structure of ERI's interdisciplinary research and enable reviewers to "read" a body of research at multiple levels of detail. We find that our approach provides decision support and reveals trends that strengthen the institutional review process by exposing regions of thematic expertise, distributions and clusters of work, and the evolution of these aspects.
    Keywords:  data discovery; decision support; institutional review; knowledge representation; science mapping; spatialization; topic modeling
  38. Rev Med Interne. 2021 Mar 23. pii: S0248-8663(21)00068-0. [Epub ahead of print]
      The present article details the publication process and the vicissitudes of three articles about SARS-CoV-2 and its related disease (COVID-19). The three articles were published one month apart between March and May 2020. Their mediatization led French health authorities to intervene. Our article does not focus on and does not assess the scientific quality of the articles presented, but only aims to open the reflection on medical publication. Beyond the description of these three specific cases, this article raises issues about article retraction, peer-reviewing, preprints, authorship and the dissemination of scientific medical information, including through the mass media. It discusses new publishing modes and the dissemination of published information in clinical research.
    Keywords:  Authorship; COVID-19; Journal; Paternité; Peer-review; Preprint; Prépublication; Revue; Évaluation par les pairs
  39. Scientometrics. 2020 Dec;125(3): 2349-2382
      Science funders are increasingly requiring evidence of the broader impacts of even basic research. Initiatives such as NIH's CTSA program are designed to shift the research focus toward more translational research. However, tracking the effectiveness of such programs depends on developing indicators that can track the degree to which basic research is influencing clinical research. We propose a new bibliometric indicator, the TS score, that is relatively simple to calculate, can be implemented at scale, is easy to replicate, and has good reliability and validity properties. This indicator is broadly applicable in settings where the goal is to estimate the degree to which basic research is used in more applied downstream research, relative to use in basic research. The TS score should be of use for a variety of policy analysis and research evaluation purposes.
    Keywords:  citation analysis; indicators; research evaluation; translational research
  40. Sarcoma. 2021 ;2021 8326318
      Background: Scientific meetings provide a forum to disseminate new research and advance patient care. The American Academy of Orthopaedic Surgeons (AAOS), Connective Tissue Oncology Society (CTOS), and Musculoskeletal Tumor Society (MSTS) annual meetings are examples of such gatherings in the field of musculoskeletal oncology. After a review of select MSTS abstracts from 1991 to 1999 revealed a 41% publication rate in scientific journals, previous authors cautioned meeting attendees that the majority of abstracts may not survive rigorous peer review and may not be scientifically valid. Since two decades have passed, this study reexamined publication rates and characteristics in a contemporary and expanded cohort of oncology abstracts presented at the AAOS, CTOS, and MSTS annual meetings.Methods: 1408 podium and poster abstracts from the AAOS (oncology-focused from 2013 to 2015), CTOS (2012 to 2014), and MSTS (2012 to 2014) annual meetings were reviewed to allow for a four-year publication window. Searches were performed with PubMed and Google Scholar databases to identify full-text publications using abstract keywords. Characteristics of each abstract and resulting publication were collected. Statistical analysis was performed using the chi-square and Kruskal-Wallis tests for time-independent comparisons, and the log-rank test after reverse Kaplan-Meier analysis for time-dependent comparisons.
    Results: Abstract publication rates overall were higher for podium presentations (67%, 280 of 415) compared to poster presentations (53%, 530 of 993; p < 0.001). When both abstract types were combined, differences between meetings did not meet statistical significance (AAOS: 65%, 106 of 162; CTOS: 57%, 521 of 909; MSTS: 54%, 183 of 337, p=0.06). Abstracts from AAOS meetings were more often published prior to the first day of the meeting (AAOS: 24%, 25 of 106; CTOS: 10%, 52 of 521; MSTS: 14%, 25 of 183; p < 0.01). After excluding previously published abstracts, AAOS abstracts had the shortest time to publication (median: 10.8 months, interquartile range (IQR): 4.4 to 18.8 months), compared to those from CTOS (16.0 months, 8.4 to 25.9 months, p < 0.01) and MSTS (15 months, 7.9 to 25.0 months, p < 0.01) meetings. CTOS abstracts were published in higher impact journals (median: 3.7, IQR: 2.9 to 5.9), compared to those from AAOS (2.9, 1.9 to 3.2, p < 0.01) and MSTS (3.1, 2.3 to 3.1, p < 0.01) meetings. Finally, 7.7% (62 of 810) of published abstracts were presented at more than one meeting.
    Conclusions: Publication rates in this study were higher than previous reports in musculoskeletal oncology and comparable or better than recent reports for other orthopedic meetings. Comparisons across the AAOS, CTOS, and MSTS annual meetings highlight notable differences but suggest similarity overall in the quality of evidence presented with little overlap between meetings. Taken together, this study points to progress in the review processes used by the program committees, reaffirms the importance of critical appraisal when considering abstract findings, and supports the continued organization of multiple scientific meetings in musculoskeletal oncology.
  41. BMC Med Res Methodol. 2021 Mar 22. 21(1): 57
      BACKGROUND: Published research informs international healthcare, yet only a few studies have assessed the representation of authors, editors, and research from developing countries in biomedical journals.METHODS: We reviewed all research articles published in five high-ranking peer-reviewed neurology journals (The Lancet Neurology, Acta Neuropathologica, Nature Reviews Neurology, Brain and Annals of Neurology) in 2010 and 2019 to determine the extent of contributions of authors, editors and research from developing countries, and the degree of international research collaboration between developed and developing countries.
    RESULTS: First authorship was attributed to authors from developing countries in only 2% (11/729) of research articles in 2010 and 3% (19/647) of research articles in 2019. All 144 editorial board members in 2019 were from developed countries. International research collaboration between developing and developed countries accounted for only 4% (30/729) of all research articles in 2010 and 6% (40/647) of all research articles in 2019.
    CONCLUSIONS: There is urgent need for strategies to support high-quality and contextually appropriate biomedical research in developing countries. Supporting high quality and contextually appropriate biomedical research now is necessary for developing countries to meet the rising healthcare needs of their populations in the future.
    Keywords:  Authors; Editors; International; Journals; Neurology; Representation
  42. Conserv Biol. 2021 Mar 22.
      Arbitrary modeling choices are inevitable in scientific studies. Yet, few empirical studies in conservation science report the effects these arbitrary choices have on estimated results. I explored the effects of subjective modeling choices in the context of counterfactual impact evaluations. Over 5000 candidate models based on reasonable changes in the choice of statistical matching algorithms (e.g., genetic and nearest distance mahalanobis matching), the parametrization of these algorithms (e.g., number of matches), and the inclusion of specific covariates (e.g., distance to nearest city, slope, or rainfall) were valid for studying the effect of Virunga National Park in Democratic Republic of the Congo on changes in tree cover loss and carbon storage over time. I randomly picked 2000 of the 5000 candidate models to determine how much and which subjective modeling choices affected the results the most. All valid models indicated that tree cover loss decreased and carbon storage increased in Virunga National Park from 2000 to 2019. Nonetheless, the order of magnitude of the estimates varied by a factor of 3 (from -4.78 to -13.12 percentage points decrease in tree cover loss and from 20 to 46 t Ce/ha for carbon storage). My results highlight that modeling choices, notably the choice of the matching algorithm, can have significant effects on point estimates and suggest that more structured robustness checks are a key step toward more credible findings in conservation science.
    Keywords:  Democratic Republic of Congo; República Democrática del Congo; almacenamiento de carbono; carbon storage; crisis de reproducibilidad; emparejamiento; matching; methods; métodos; protected areas; prácticas de investigación; pérdida de la cobertura arbórea; reproducibility crisis; research practices; transparencia; transparency; tree cover loss; áreas protegidas; 研究实践, 再现性危机, 透明度, 方法, 匹配, 保护地, 树木覆盖丧失, 碳储量, 刚果民主共和国
  43. J Dermatolog Treat. 2021 Mar 25. 1-30
      BACKGROUND: Atopic dermatitis (AD) has been a hot research direction of dermatologists for a long time. However, the knowledge structures and theme trends for AD have not yet been studied bibliometrically.OBJECTIVE: To investigate the distribution pattern and knowledge structure of AD related literatures in PubMed.
    METHODS: Bibliographic information was generated by the Bibliographic Item Co-Occurrence Matrix Builder (BICOMB). A visual matrix was created by the gCLUTO software. GraphPad Prism 5 software was used to construct a Strategic diagram analysis. Ucinet 6.0 software and NetDraw 2.084 software were used to generate a social network analysis (SNA).
    RESULTS: Among all the extracted MeSH terms and subheadings, 77 MeSH terms/MeSH subheadings with a high-frequency were identified, and hot topics were gathered together into 6 groups. In the strategic diagram, immunology, microbiology, and drug therapy of AD were fully developed. In contrast, prevention, pathology, genetics, metabolism, administration, cost of illness, quality of life therapeutic paradigm, and immunosuppressive agents of AD were considerably immature offering prospective scope for further research.
    CONCLUSIONS: The results may potentially aid in describing an all-round grasp of the current research areas and furnish guidelines for the researchers for beginning new projects.
    Keywords:  atopic dermatitis; hot research topics; knowledge structures; mapping theme trends
  44. Scientometrics. 2021 Mar 12. 1-19
      COVID-19 cases have surpassed the 109 + million markers, with deaths tallying up to 2.4 million. Tens of thousands of papers regarding COVID-19 have been published along with countless bibliometric analyses done on COVID-19 literature. Despite this, none of the analyses have focused on domain entities occurring in scientific publications. However, analysis of these bio-entities and the relations among them, a strategy called entity metrics, could offer more insights into knowledge usage and diffusion in specific cases. Thus, this paper presents an entitymetric analysis on COVID-19 literature. We construct an entity-entity co-occurrence network and employ network indicators to analyze the extracted entities. We find that ACE-2 and C-reactive protein are two very important genes and that lopinavir and ritonavir are two very important chemicals, regardless of the results from either ranking.
    Keywords:  Bibliometrics; COVID-19; Entity; Entitymetrics; Knowledge graph; Scientific publications
  45. Wellcome Open Res. 2020 ;5 172
      Background: "Open science" is an umbrella term describing various aspects of transparent and open science practices. The adoption of practices at different levels of the scientific process (e.g., individual researchers, laboratories, institutions) has been rapidly changing the scientific research landscape in the past years, but their uptake differs from discipline to discipline. Here, we asked to what extent journals in the field of sleep research and chronobiology encourage or even require following transparent and open science principles in their author guidelines. Methods: We scored the author guidelines of a comprehensive set of 28 sleep and chronobiology journals, including the major outlets in the field, using the standardised Transparency and Openness (TOP) Factor. This instrument rates the extent to which journals encourage or require following various aspects of open science, including data citation, data transparency, analysis code transparency, materials transparency, design and analysis guidelines, study pre-registration, analysis plan pre-registration, replication, registered reports, and the use of open science badges. Results: Across the 28 journals, we find low values on the TOP Factor (median [25 th, 75 th percentile] 2.5 [1, 3], min. 0, max. 9, out of a total possible score of 28) in sleep research and chronobiology journals. Conclusions: Our findings suggest an opportunity for sleep research and chronobiology journals to further support the recent developments in transparent and open science by implementing transparency and openness principles in their guidelines and making adherence to them mandatory.
    Keywords:  chronobiology; circadian rhythms; meta research; open science; publishing; sleep
  46. J Environ Manage. 2021 Mar 21. pii: S0301-4797(21)00397-2. [Epub ahead of print]287 112335
      The reuse of Waste Electrical and Electronic Equipment (WEEE) is deemed the best end-of-life option in terms of the environmental impact and socio-economic benefits. Taking this cue, this paper applies a systematic literature review to map the existing knowledge base to present the major and emerging themes of the reuse assessment of WEEE. In all, 12,216 articles published from 2005 to 2019 in the Web of Science, ProQuest, and Google Scholar are collected, from which 331 articles are shortlisted for review. The shortlisted articles are divided into two sub-periods 2005-2014 and 2015-2019 to draw out the development of the research themes and the contribution of the recent research articles to the literature on WEEE reuse assessment. Bibliographic coupling combined with keyword analysis is performed using SciMat and VOSViewer. The results inform that the major ongoing themes are Consumer behaviour towards use, disposal, collection, reuse, repair and recycling of WEEE; Assessing the potential of WEEE for reuse; Product recovery strategy and market analysis for WEEE remanufacturing; and Material flow analysis of WEEE in circular economy. The research themes of Informal WEEE management in developing countries; Impact of government subsidy on WEEE management; and Product service system and circular economy deserve further attention. In the articles reviewed, mobile phones and computers are extensively studied for WEEE reuse assessment followed by refrigerators and televisions. Assessing the environmental impact and legal aspects of WEEE reuse, cross-border movements and flow in secondary markets, policies and regulations on the purchase of reprocessed WEEE, and the reprocessing and revenue made by the informal sector in developing countries are possibilities for future research.
    Keywords:  Bibliographic coupling; Circular economy; E-Waste management; Keyword analysis; Product recovery; Reuse