bims-evares Biomed News
on Evaluation of research
Issue of 2021‒04‒11
forty-two papers selected by
Thomas Krichel
Open Library Society

  1. Orthop J Sports Med. 2020 Dec;8(12): 2325967120967082
      Background: Citation counts have often been used as a surrogate for the scholarly impact of a particular study, but they do not necessarily correlate with higher-quality investigations. In recent decades, much of the literature regarding shoulder instability is focused on surgical techniques to correct bone loss and prevent recurrence.Purpose: To determine (1) the top 50 most cited articles in shoulder instability and (2) if there is a correlation between the number of citations and level of evidence or methodological quality.
    Study Design: Cross-sectional study.
    Methods: A literature search was performed on both the Scopus and the Web of Science databases to determine the top 50 most cited articles in shoulder instability between 1985 and 2019. The search terms used included "shoulder instability," "humeral defect," and "glenoid bone loss." Methodological scores were calculated using the Modified Coleman Methodology Score (MCMS), Jadad scale, and Methodological Index for Non-Randomized Studies (MINORS) score.
    Results: The mean number of citations and mean citation density were 222.7 ± 123.5 (range, 124-881.5) and 16.0 ± 7.9 (range, 6.9-49.0), respectively. The most common type of study represented was the retrospective case series (evidence level, 4; n = 16; 32%) The overall mean MCMS, Jadad score, and MINORS score were 61.1 ± 10.1, 1.4 ± 0.9, and 16.0 ± 3.0, respectively. There were also no correlations found between mean citations or citation density versus each of the methodological quality scores.
    Conclusion: The list of top 50 most cited articles in shoulder instability comprised studies with low-level evidence and low methodological quality. Higher-quality study methodology does not appear to be a significant factor in whether studies are frequently cited in the literature.
    Keywords:  Bankart repair; Latarjet; bone loss; citations; level of evidence; methodological quality; shoulder instability
  2. Z Evid Fortbild Qual Gesundhwes. 2021 Apr 03. pii: S1865-9217(21)00029-5. [Epub ahead of print]
      INTRODUCTION: Scientific evidence in medicine is based on data generated from research. Recently, the number of scientifically active physicians has decreased, which has led to the development of the Clinician Scientist Programs. To better structure and focus the research of young physicians, we aimed to investigate the impact of collaborations and other factors on the quality and output of scientific publications.METHODS: The abstracts of three annual congresses of the German Society of Urology were systematically analysed regarding content, collaborations, and study design. Full-text publications and journals were identified through a MEDLINE® search. Impact factors (IFs) were identified using Journal Citation Reports™. To identify factors which predict publication and IFs, χ2 and Wilcoxon rank-sum tests were used. Uni- and multivariable logistic regression analyses were performed to assess the best model for publication success for an abstract as well as the achievement of a high IF.
    RESULTS: 1,074 abstracts were reviewed. The publication rate of subsequent peer-reviewed full-text publications was 52.5%. Collaborations with at least one institution (odds ratio (OR) 2.02, 95% confidence interval (CI) 1.48-2.76, p <0.0001), statistical analysis (OR 1.92, 95% CI 1.41-2.60, p <0.0001), study design (prospective vs. retrospective: OR 1.43, 95% CI 1.06-1.93, p=0.021), and national collaborations (OR 1.43, 95% CI 1.04-1.98, p=0.029) increased the likelihood of publication in a peer-reviewed journal in a multivariable logistic regression analysis. Experimental design (OR 2.77, 95% CI 1.32-5.84, p=0.007), international collaborations (OR 2.26, 95% CI 1.23-4.15, p=0.009), oncologic topics (OR 1.94, 95% CI 1.23-3.07, p=0.005), prostate disease (OR 1.75, 95% CI 1.08-2.84, p=0.023), and statistical analysis (OR 1.68, 95% CI 1.06-2.64, p=0.026) were associated with a higher IF.
    CONCLUSION: Abstracts resulting from collaborative research projects had a higher likelihood of subsequent full-text publication and a higher IF. More full-text publications were reported when abstracts included a statistical analysis. Hence, intensive networking (e. g. at congresses and workshops) of researching physicians as well as statistical/biometrical classes could be key factors to improve academic success.
    Keywords:  Academic success; Akademischer Erfolg; Career choice; Congresses as topic; Curriculum; Journal Impact Factor; Journal impact factor; Karrierewahl; Kongresse als Thema; Medical graduate education; Medizinische Graduiertenausbildung
  3. Ann Palliat Med. 2021 Feb 24. pii: apm-20-1978. [Epub ahead of print]
      BACKGROUND: Osteomyelitis is a difficult problem for orthopedic surgeons due to its great harm and complicated treatment. In this study, we aim to make a bibliometric analysis of the literature related to osteomyelitis and explore the research status, hotspots and frontiers in this field in recent 10 years.METHODS: Literature relating to osteomyelitis from 2010 to 2019 was retrieved from the database of Science Citation Index Expanded (SCIE) of Web of Science. CiteSpace was used to analyze country/institution, authors/cited authors, cited journals, cited references, and keywords. An analysis of counts and centrality was used to reveal publication outputs, countries/institutions, core journals, active authors, hot topics, and frontiers.
    RESULTS: A total of 6,421 valid literatures were retrieved. The most productive country and institution were the United States and Shanghai Jiao Tong University, respectively. Researchers and institutions from the United States, Germany, England, and France were the core research forces. There was a broad and close cooperation worldwide. Lipsky BA [24] was the most productive first author, and Lew DP [487] was the most frequently cited author. Lipsky et al.'s [2012] article (co-citation counts, 146) was the most representative and symbolic reference. Journal of Foot Ankle Surgery [111] was the most productive journal. Clin Infect Dis [2,275] was the most frequently co-cited journal. Staphylococcus aureus infection and the diagnosis, treatment and management strategy of osteomyelitis were the hot spots. Epidemiology, diabetic foot, treatment, especially antibiotics, biofilm and in vitro research were research frontiers.
    CONCLUSIONS: This study reveals the current research status and hot spots in the field of osteomyelitis in recent 10 years, which may help researchers to identify further potential perspectives on collaborators, research frontiers, and hot topics.
    Keywords:  Osteomyelitis; bibliometric analysis; hotspots; medical information sciences
  4. Ann Glob Health. 2021 Mar 31. 87(1): 32
      Background: Progress in palliative care (PC) requires scientific advances which could potentially be catalyzed by international research collaboration (IRC). It is currently not known how often IRC occurs with PC investigators in South America.Objectives: To evaluate the percentage of South America journal articles on PC involving IRCs and the impact of these collaborations on the scientific potential the studies and on their citations.
    Methods: This was a bibliometric analysis of studies published between January 1, 1998, and December 31, 2017. A search of Pubmed, Embase, Lilacs, and Web of Science (WOS) was performed using the terms "palliative care," "hospice care," "hospices" and "terminal care," combined with the name of South America countries. The scientific potential was assessed by analyzing study design, characteristics of the journal and funding. IRCs were further subdivided in internal (within South America countries) and external (with countries outside South America).
    Findings: Of the 641 articles, 117 (18.2%) involved IRCs (internal: 18, 2.8%; external: 110, 17.2%). Articles with IRCs had higher median two-year citations in WOS (2 vs. 1, p < 0.001), Scopus (3 vs. 1, p < 0.001) and Google Scholar (4.5 vs. 2, p < 0.001) compared to articles without IRC. Moreover, they were more often funded (40.7% vs. 9.7%, p < 0.001), published in Pubmed-indexed (76.1% vs. 41.6%; p < 0.001) and in WOS-indexed (70.1% vs. 29.6%; p < 0.001) journals, and with study designs most often classified as clinical trial (5.1% vs. 1.0%; p = 0.002) and cohort (10.3% vs. 2.9%; p < 0.001) compared to articles without IRC.
    Conclusions: Studies with international research collaborations, both internal and external to South America, are more frequently cited and have characteristics with greater scientific potential than do studies without international collaborations.
  5. Medicine (Baltimore). 2021 Apr 09. 100(14): e25422
      BACKGROUND: Artificial intelligence (AI) has had a significant impact on our lives and plays many roles in various fields. By analyzing the past 30 years of AI trends in the field of nephrology, using a bibliography, we wanted to know the areas of interest and future direction of AI in research related to the kidney.METHODS: Using the Institute for Scientific Information Web of Knowledge database, we searched for articles published from 1990 to 2019 in January 2020 using the keywords AI; deep learning; machine learning; and kidney (or renal). The selected articles were reviewed manually at the points of citation analysis.
    RESULTS: From 218 related articles, we selected the top fifty with 1188 citations in total. The most-cited article was cited 84 times and the least-cited one was cited 12 times. These articles were published in 40 journals. Expert Systems with Applications (three articles) and Kidney International (three articles) were the most cited journals. Forty articles were published in the 2010s, and seven articles were published in the 2000s. The top-fifty most cited articles originated from 17 countries; the USA contributed 16 articles, followed by Turkey with four articles. The main topics in the top fifty consisted of tumors (11), acute kidney injury (10), dialysis-related (5), kidney-transplant related (4), nephrotoxicity (4), glomerular disease (4), chronic kidney disease (3), polycystic kidney disease (2), kidney stone (2), kidney image (2), renal pathology (2), and glomerular filtration rate measure (1).
    CONCLUSIONS: After 2010, the interest in AI and its achievements increased enormously. To date, AIs have been investigated using data that are relatively easy to access, for example, radiologic images and laboratory results in the fields of tumor and acute kidney injury. In the near future, a deeper and wider range of information, such as genetic and personalized database, will help enrich nephrology fields with AI technology.
  6. Emerg Med Australas. 2021 Apr 05.
      OBJECTIVE: Understanding the impact different journal articles have in any academic field is important - particularly in emerging professions. A bibliometric analysis like this does not yet exist for paramedicine, despite the rapid increase in its primary literature. The objective of the present study was to identify and analyse the 100 top-cited articles about paramedicine.METHODS: We searched the Scopus database in August 2020 for studies relating to paramedicine. After screening titles and abstracts, we extracted the citation count, journal name, publication year, and country of origin. We manually assessed whether the study was clinical or not, noted the sex of the authors, the profession of first and last authors and the study design used.
    RESULTS: The median citation count for the top 100 papers in paramedicine was 58 (interquartile range 46-84 citations). The articles were published across 48 different journals, with Resuscitation and Prehospital Emergency Care being the two most frequent. The top-cited paramedic papers originated from 16 different countries and were written predominantly by medical doctors. Three quarters (73%) of the studies had a clinical focus, and a quarter (26%) were randomised controlled trials.
    CONCLUSIONS: The evolution of paramedicine towards professionalism is backed up by the growth of its own body of knowledge. This analysis of the 100 most cited studies in paramedicine is the first of its kind and highlights that paramedicine articles have a high citation count and are published across numerous journals, but with a relative lack of contribution from paramedic practitioners and female researchers.
    Keywords:  citation rate; impact factor; journal; paramedicine; publication; research literature
  7. Medwave. 2021 Mar 05. 21(2): e8121
      Introduction: Peru is a developing country with increasing scientific production. However, it is necessary to understand the trends, impact, and collaborative networks of research to plan for policy improvements.Objective: We analyzed the production, impact, and collaboration networks in the Peruvian scientific production between 2000 and 2019.
    Methods: We did an observational analytical study. We searched Scopus for all the publications with at least one author with a Peruvian affiliation declared in the author byline. A descriptive analysis of the different characteristics, trends, and scientific collaboration was carried out. Collaboration networks were plotted using VOSviewer.
    Results: Between 2000 and 2019, Peru had a total of 24 482 publications in scientific journals, with an average annual growth of 13.6%. Of the total, 70% of all the articles were cataloged as Clinical Medicine and Biomedical Sciences. Only half of the articles had a Peruvian affiliation. The countries with the largest share of collaboration were the United States and Brazil, and the articles with international collaboration had the highest number of citations per publication.
    Conclusions: Scientific production in Peru has increased in recent years, with a significant percentage of publications based on international collaboration and led by authors with non-Peruvian affiliations. It is necessary to strengthen collaboration ties between Peruvian and foreign institutions. Furthermore, it is essential to propitiate further research that will help solve the country's problems.
    Keywords:   collaboration indicator; journal impact factor; science and technology information networks; scientific publication indicators; developing countries
  8. J Pain Symptom Manage. 2021 Apr 02. pii: S0885-3924(21)00270-0. [Epub ahead of print]
      BACKGROUND: Research on Palliative Care (PC) can be used as a direct measure to assess the level of PC development in a country or region.AIM: To investigate the scientific production in the field of palliative care in South American countries over the last two decades.
    METHODS: The search was performed using the terms "palliative care", "hospice care", "hospices" and "terminal care" combined with the names of South American countries in several databases. The trend in publications over time was analyzed by linear equations (R2) and by calculating the annual percentage change (APC). The article citations were extracted from Web of Science (WOS), Scopus and Google Scholar, and the countries' impact factors (IFc) were calculated.
    RESULTS: Of the 4.259 identified articles, 641 were included in the analysis. There was a clear increase in the number of publications over the analyzed period (R2 = 0.8794, APC = 14.42%). Brazil was the country with the highest number of publications (n = 389); however, after adjustments by population, GDP and number of researchers, Chile was the country with the greatest prominence, including the highest IF in WOS (4.409). Only 8.3% of publications were systematic review, clinical trial or cohort studies; only 15.4% were funded.
    CONCLUSIONS: This bibliometric review identified an annual increase of 14% in the number of scientific publications by researchers from South America over the last 20 years. Although Brazil produced the most articles, Chile, had the most efficient scientific production. In general, the articles had low potential for scientific impact.
    Keywords:  South America; bibliometrics; palliative care; systematic review
  9. J Toxicol. 2021 ;2021 6637516
      The fast-growing world population places food production under enormous pressure to ensure food security. One of the most common methods to increase food production is the use of pesticides, but the continuous use thereof has numerous detrimental effects on the environment. The interest in biopesticides for a possible substitute has grown over the past two decades. To determine the research evolution of biopesticides (green pesticides), a bibliometric analysis from 1994 to 2019 was carried out. A total of 580 documents were found eligible in the Scopus database for this analysis. Parameters such as the number of articles, article citations, keywords, source impact, and countries of publication were used to analyse the documents and rank countries based on authors, productivity, article citations, and co-authorship. The analysis reveals production increased significantly from 2009 and has the most published documents in 2019 with a total of 74 articles. Asia's most populous countries, India and China, were ranked first and second, respectively, and the USA third in terms of the most productive countries in the field of plant biopesticides. Countries in Europe and Africa however have fewer publications than expected in this field, given the fact that they are high consumers of pesticides. India, China, and the USA have 4.08%, 2.94%, and 12.5% multiple country publications (MCPs), respectively, with the USA having a stronger collaboration. Finally, there is a clear indication in this study that India and China are taking the lead in substituting synthetic pesticides with the alternative natural plant biopesticide.
  10. JAMA Netw Open. 2021 Apr 01. 4(4): e212252
      Importance: Gender disparity exists among authors of the oncology literature.Objective: To quantify trends in authorship by gender within a comprehensive data set of Medline-indexed oncology articles in medical journals with high impact factors.
    Design, Setting, and Participants: This cross-sectional study used Medline citations to examine archives of research journals from 3 disciplines in the oncology literature. Authors from all oncology-related articles with Medical Subject Headings terms assigned from 2002 to 2018 from 13 general oncology/medicine, radiation oncology, and surgical journals were included for analysis, encompassing clinical trials, observational studies (excluding case reports), reviews, systematic reviews, meta-analyses, and all other published articles. Data were analyzed between April and May 2020.
    Exposures: Authors were assigned genders based on societal naming norms via third-party gender identification service This assignment was internally validated based on manually obtained publicly available data on the internet.
    Main Outcomes and Measures: Trend in female authorship over time while considering journal type, authorship position, and article type.
    Results: A total of 420 526 authors from 58 368 articles were found, of which 400 945 were assigned a gender based on their name. In total, 29.5% (95% CI, 29.4%-29.6%) of authors were identified as female, rising from 25.5% (95% CI, 24.7%-26.3%) in 2002 to 31.7% (95% CI, 31.2%-32.3%) in 2018. Each subgroup of primary article type by journal type saw a rise in female authorship over the studied period. For primary articles, last authors were less likely to be women than first authors, regardless of journal type, year, and primary article type (eg, general oncology: odds ratio [OR], 0.60; 95% CI, 0.52-0.69). For general oncology articles, women were less likely to be authors of clinical trials at each authorship position than authors at that respective position for observational studies (first, second, and last authors: OR, 0.58; 95% CI, 0.49-0.67; other authors: OR, 0.84; 95% CI, 0.79-0.89). This difference was not seen for radiation oncology or surgical oncology journals.
    Conclusions and Relevance: This cross-sectional study found that female authorship in oncology research literature has increased. However, there remains a dearth of female senior authors, and the overall rise in female authorship has not kept up with the rise in female oncology faculty.
  11. Diabetes Metab Syndr. 2021 Mar 10. pii: S1871-4021(21)00070-9. [Epub ahead of print]15(3): 765-770
      BACKGROUND AND AIM: COVID-19 has affected the world population, with a higher impact among at-risk groups, such as diabetic patients. This has led to an exponential increase in the number of studies related to the subject, although their bibliometric characteristics are unknown. This article aims to characterize the world scientific production on COVID-19 and diabetes indexed in Scopus.METHODS: Articles on the subject were retrieved using a search strategy and bibliometric indicators of production, visibility, collaboration and impact were studied.
    RESULTS: The total scientific production was 1956 documents, which have 35086 citations and an h-index of 67. Articles published in Diabetes and Metabolic Syndrome: Clinical Research and Reviews (n = 127), as well as those by researchers from the United States (n = 498) predominated. Articles by Chinese authors (n = 314) had the highest impact according to the received citations (n = 21757). India, China and Spain are leading countries in terms of the research in which they participate. There is extensive international scientific collaboration led by China, the United States and Italy.
    CONCLUSION: The volume of publications on COVID-19 and diabetes and their scientific impact show the incentive that the study of these diseases represents for the scientific community worldwide.
    Keywords:  Bibliometrics; COVID-19; Diabetes; SARS-CoV-2
  12. J Pharm Bioallied Sci. 2020 Nov;12(Suppl 2): S707-S710
      Background: Nonsteroidal anti-inflammatory drugs (NSAIDs) are the most common analgesics used for pain relief. Adverse effects of NSAIDs range from gastrointestinal tract disturbances to increased risk of bleeding, renal injury, and myocardial infarction. In Malaysia, the research productivity of NSAIDs is not well explored.Objective: This study examined research productivity of NSAIDs in Malaysia.
    Materials and Methods: This bibliometric study included all published research articles on NSAIDs from 1979 to 2018, which were conducted in Malaysia. The search databases such as Google Scholar, PubMed, ScienceDirect, and Scopus were used. Search terms included NSAIDs and specific drug names such as ibuprofen, celecoxib, and naproxen. Growth of publication, authorship pattern, citation analysis, journal index, type of studies, and geographical distribution of institutions publishing articles on NSAIDs were measured.
    Results: Overall, 111 articles were retrieved from 1979 to 2018. The annual productivity of articles throughout the study fluctuated in which the highest productivity was in 2018, 12.61% (n = 14). Majority of articles were multiple authored, 99.10% (n = 109), and University of Science Malaysia (USM) produced the highest number of articles (30 articles). Most of the articles were International Scientific Indexing-indexed, 52.25% (n = 58), and the main issue studied in most of the articles was the drug formulation of NSAIDs.
    Conclusion: The growth of NSAID research in Malaysia was slow, and the majority of research involved laboratory studies. Clinical studies evaluating the clinical outcomes of NSAIDs in patients, particularly using large healthcare databases are still lacking.
    Keywords:  Analgesics; Malaysia; bibliometric; diclofenac; ibuprofen; nonsteroidal anti-inflammatory drugs
  13. J Affect Disord. 2021 Mar 19. pii: S0165-0327(21)00265-2. [Epub ahead of print]287 354-358
      BACKGROUND: Metrics of journal's impact factor may suggest the journal's influence in a particular field, but they have been used inadvertently as a measure of the journal and individual publications' scientific quality.METHODS: We assessed how scientific journals in the field of psychiatry and mental health are ranked (top 20) according to the scores of distinct metrics (Eigenfactor score, Google Scholar Metrics, Journal Citation Reports, Scimago Journal & Country Rank, and Source Normalized Impact per Paper), described their main characteristics and perfomed a spearman's correlation analyses to investigate to which extent these metrics are associated. We also discussed the limitations of dealing with these metrics and the rankings they provide as a proxy of the journal's quality.
    RESULTS: Only 5 (12.5%) journals appear in all metrics (JAMA Psychiatry, American Journal of Psychiatry, Molecular Psychiatry, Schizophrenia Bulletin, and the Journal of Child Psychology and Psychiatry), more than one-third of the journals show up in only one and less than half (42.5%) appear in three or more. Only JAMA Psychiatry is in one of the first five positions of all metrics. No journal ranked in the same position across the metrics. On the other hand, we found the correlations between all the metrics were statistically significant.
    LIMITATIONS: The metrics included are not exhaustive.
    CONCLUSIONS: Although each metric provides a particular ranking, they are highly correlated. Rankings also change according to distinct subject categories in which they are assessed. We suggest less emphasis should be given to Journal Metrics to infer journal's quality.
    Keywords:  citations; journal impact factor; mental health; metric; psychiatry
  14. J Foot Ankle Surg. 2021 Mar 09. pii: S1067-2516(21)00074-0. [Epub ahead of print]
      BACKGROUND: To perform the citation and content analysis of 100 articles on Hallux valgus from the most cited to the least.MATERIALS AND METHODS: Articles published on Hallux valgus between 1980 and 2020 were analyzed by making use of the Web of Science database. Articles were ranked from most cited to the least. Content analysis of all articles was also carried out. Original research articles, reviews, and clinical trials were included in the study whereas case reports were excluded from the study.
    RESULTS: The total number of citations of the 100 most-cited articles was 7,697. The most-cited article was 'Prevalence of hallux valgus in the general population; systematic review and meta-analysis' published by Sheere Nix in Journal of Foot and Ankle Research in 2010. The country where the articles were mostly produced was USA (n = 46). The most interesting issue was the osteotomy techniques and changes in Hallux valgus surgery.
    CONCLUSION: The treatment of the Hallux valgus disease is still discussed today. Citation analyses have shown that surgical developments related to HV surgery still attract attention, and this information will be updated continuously in line with the increasing number of articles.
    Keywords:  ankle; cited; foot; hallux valgus; paper
  15. Knee Surg Sports Traumatol Arthrosc. 2021 Apr 10.
      PURPOSE: This study aimed to evaluate both publication and authorship characteristics in Knee Surgery, Sports Traumatology, Arthroscopy journal (KSSTA) regarding knee arthroplasty over the past 15 years.METHODS: PubMed was searched for articles published in KSSTA between January 1, 2006, and December 31st, 2020, utilising the search term 'knee arthroplasty'. 1288 articles met the inclusion criteria. The articles were evaluated using the following criteria: type of article, type of study, main topic and special topic, use of patient-reported outcome scores, number of references and citations, level of evidence (LOE), number of authors, gender of the first author and continent of origin. Three time intervals were compared: 2006-2010, 2011-2015 and 2016-2020.
    RESULTS: Between 2016 and 2020, publications peaked at 670 articles (52%) compared with 465 (36%) published between 2011 and 2016 and 153 articles (12%) between 2006 and 2010. While percentage of reviews (2006-2010: 0% vs. 2011-2015: 5% vs. 2016-2020: 5%) and meta-analyses (1% vs. 6% vs. 5%) increased, fewer case reports were published (13% vs. 3% vs. 1%) (p < 0.001). Interest in navigation and computer-assisted surgery decreased, whereas interest in perioperative management, robotic and individualized surgery increased over time (p < 0.001). There was an increasing number of references [26 (2-73) vs. 30 (2-158) vs. 31 (1-143), p < 0.001] while number of citations decreased [30 (0-188) vs. 22 (0-264) vs. 6 (0-106), p < 0.001]. LOE showed no significant changes (p = 0.439). The number of authors increased between each time interval (p < 0.001), while the percentage of female authors was comparable between first and last interval (p = 0.252). Europe published significantly fewer articles over time (56% vs. 47% vs. 52%), whereas the number of articles from Asia increased (35% vs. 45% vs. 37%, p = 0.005).
    CONCLUSION: Increasing interest in the field of knee arthroplasty-related surgery arose within the last 15 years in KSSTA. The investigated topics showed a significant trend towards the latest techniques at each time interval. With rising number of authors, the part of female first authors also increased-but not significantly. Furthermore, publishing characteristics showed an increasing number of publications from Asia and a slightly decreasing number in Europe.
    Keywords:  Authorship characteristics; Publishing characteristics; Total knee arthroplasty; Total knee replacement; Trends in research
  16. Scientometrics. 2021 Mar 26. 1-20
      In this paper we seek to examine the co-authoring pattern of a select group of researchers that are affiliated with a specific country. By way of making use of standard bibliometric analysis, we explore the publication evolution of all COVID-19-related peer reviewed papers that have been (co)-authored by researchers that are affiliated with Greek institutions. The aim is to identify its advancement over time, the institutions involved and the countries with which the co-authors are affiliated with. The timeframe of the study spans from the moment that WHO Director-General declared the novel coronavirus outbreak a public health emergency of international concern (WHO, 2020. Archived: WHO timeline-covid-19. Retrieved from Archived: Who Timeline-COVID-19. Accessed on 10 May 2020., Archived: WHO timeline-covid-19), January 2020, to October 2020. Findings indicate that there is a steady increase in the number of publications as well as the number of scientific collaborations over time. At a cross-country level, results suggest that the affiliated institutional sectors such as the Higher Education Sector (HES) and the Government Sector (GOV) contributed the most in terms of scientific output. On an international scale, the evolution of the scientific collaboration is imprinted and distributed as a chain of affiliations that linked nations together. Such chains are represented as clusters of countries, in which the scientific connections between different countries can be visualised. It can be reasoned that a significant amount of publications (20%) is affiliated with countries having "traditionally" major scientific impact on the field of Medicine.Supplementary Information: The online version contains supplementary material available at 10.1007/s11192-021-03952-9.
    Keywords:  Bibliometrics; COVID-19; Co-authorship; Greece; Scientific collaboration
  17. Cureus. 2021 Feb 26. 13(2): e13564
      Introduction The scientific merit of a paper and its ability to reach broader audiences is essential for scientific impact. Thus, scientific merit measurements are made by scientometric indexes, and journals are increasingly using published papers as open access (OA). In this study, we present the scientometric data for journals published in clinical allergy and immunology and compare the scientometric data of journals in terms of their all-OA and hybrid-OA publication policies. Methods Data were obtained from Clarivate Analytics InCites, Scimago Journal & Country Rank, and journal websites. A total of 35 journals were evaluated for bibliometric data, journal impact factor (JIF), scientific journal ranking (SJR), Eigenfactor score (ES), and Hirsch index (h-index). US dollars (USD) were used for the requested article publishing charge (APC). Results The most common publication policy was hybrid-OA (n = 20). The median OA publishing APC was 3000 USD. Hybrid-OA journals charged a higher APC than all-OA journals (3570 USD vs. 675 USD, p = 0.0001). Very strong positive correlations were observed between SJR and JIF and between ES and h-index. All the journals in the h-index and ES first quartiles were hybrid-OA journals. Conclusion Based on these results, we recommend the use of SJR and ES together to evaluate journals in clinical allergy and immunology. Although there is a wide APC gap between all-OA and hybrid-OA journals, all journals within the first quartiles for h-index and ES were hybrid-OA. Our results conflict with the literature stating that the OA publication model's usage causes an increase in citation counts.
    Keywords:  allergy and immunology; hypersensitivity; medical research; open access publishing; scientometrics
  18. J Pharm Bioallied Sci. 2020 Nov;12(Suppl 2): S667-S670
      Opioid analgesics have been widely used for the treatment of pain. In USA, it was reported an increase in opioid prescribing is parallel with the increase of opioid use disorders such as misuse, abuse, and opioids overdose-related death. Little is known about the opioid situation and its related research in Malaysia. Therefore, this bibliometric study provided an overview on the productivity of opioid research in Malaysia. All published articles on opioid research in Malaysia from 2006 to 2018 were included, where they were retrieved from online databases. Then, the data were analysed, presented and discussed using standard bibliometric indicators, such as growth of publications, number of citation journals, geographical distribution, and issues addressed in the publications. Total of 78 research articles on opioids published between 2006 and 2018 were identified. The relative growth rate (RGR) of publications during the study period was 12.24%. The most common issue studied was the methadone maintenance therapy. Most articles were published in the indexed journals (98.72%) and the predominant journal was the Drug and Alcohol Dependence (11.54%). The article on buprenorphine and naltrexone reported the highest citations of 85. It can be concluded that research evaluating opioids in pain management particularly in patients with non-cancer pain in Malaysia is limited and requires further exploration.
    Keywords:  Bibliometric; Malaysia; methadone; morphine; opioid research
  19. BMC Cancer. 2021 Apr 07. 21(1): 374
      BACKGROUND: Flap endonuclease 1 (FEN1) is a structure-specific nuclease that plays a role in a variety of DNA metabolism processes. FEN1 is important for maintaining genomic stability and regulating cell growth and development. It is associated with the occurrence and development of several diseases, especially cancers. There is a lack of systematic bibliometric analyses focusing on research trends and knowledge structures related to FEN1.PURPOSE: To analyze hotspots, the current state and research frontiers performed for FEN1 over the past 15 years.
    METHODS: Publications were retrieved from the Web of Science Core Collection (WoSCC) database, analyzing publication dates ranging from 2005 to 2019. VOSviewer1.6.15 and Citespace5.7 R1 were used to perform a bibliometric analysis in terms of countries, institutions, authors, journals and research areas related to FEN1. A total of 421 publications were included in this analysis.
    RESULTS: Our findings indicated that FEN1 has received more attention and interest from researchers in the past 15 years. Institutes in the United States, specifically the Beckman Research Institute of City of Hope published the most research related to FEN1. Shen BH, Zheng L and Bambara Ra were the most active researchers investigating this endonuclease and most of this research was published in the Journal of Biological Chemistry. The main scientific areas of FEN1 were related to biochemistry, molecular biology, cell biology, genetics and oncology. Research hotspots included biological activities, DNA metabolism mechanisms, protein-protein interactions and gene mutations. Research frontiers included oxidative stress, phosphorylation and tumor progression and treatment.
    CONCLUSION: This bibliometric study may aid researchers in the understanding of the knowledge base and research frontiers associated with FEN1. In addition, emerging hotspots for research can be used as the subjects of future studies.
    Keywords:  Bibliometrics; Cancer; Citespace; Flap endonuclease 1
  20. PLoS One. 2021 ;16(4): e0249661
      BACKGROUND: Conflicts of interest in biomedical research can influence research results and drive research agendas away from public health priorities. Previous agenda-setting studies share two shortfalls: they only account for direct connections between academic institutions and firms, as well as potential bias based on researchers' personal beliefs. This paper's goal is to determine the key actors and contents of the prevailing health and biomedical sciences (HBMS) research agenda, overcoming these shortfalls.METHODS: We performed a bibliometric and lexical analysis of 95,415 scientific articles published between 1999 and 2018 in the highest impact factor journals within HBMS, using the Web of Science database and the CorText platform. HBMS's prevailing knowledge network of institutions was proxied with network maps where nodes represent affiliations and edges the most frequent co-authorships. The content of the prevailing HBMS research agenda was depicted through network maps of prevalent multi-terms found in titles, keywords, and abstracts.
    RESULTS: The HBMS research agendas of large private firms and leading academic institutions are intertwined. The prevailing HBMS agenda is mostly based on molecular biology (40% of the most frequent multi-terms), with an inclination towards cancer and cardiovascular research (15 and 8% of the most frequent multi-terms, respectively). Studies on pathogens and biological vectors related to recent epidemics are marginal (1% of the most frequent multi-terms). Content of the prevailing HBMS research agenda prioritizes research on pharmacological intervention over research on socio-environmental factors influencing disease onset or progression and overlooks, among others, the study of infectious diseases.
    CONCLUSIONS: Pharmaceutical corporations contribute to set HBMS's prevailing research agenda, which is mainly focused on a few diseases and research topics. A more balanced research agenda, together with epistemological approaches that consider socio-environmental factors associated with disease spreading, could contribute to being better prepared to prevent and treat more diverse pathologies and to improve overall health outcomes.
  21. J Cancer Educ. 2021 Apr 09.
      Publications of research conducted during short-term research education training programs serve as an outcome measure for students' successes and a program's value. We compared the impact of cancer publications from research conducted during a short-term cancer research education training program, to publications by program participants in the years following completion of the training program and earning an academic or professional degree. Bibliometrics and altmetrics from NIH, ResearchGate, Google Scholar and Scopus® that measure publication impact were collected on cancer publications by student interns in the CaRES (Cancer Research Experiences for Students) R25 program from 1999 to 2017; and on cancer publications in subsequent years by program alumni (students who completed CaRES). Publication characteristics and impact measures were described and compared. Of 558 publications, 206 (37%) were related to CaRES internship projects and 352 (63%) related to any cancer research in which program alumni engaged following their internships. CaRES project publications were cited more frequently and held a higher research interest score than later cancer publications by CaRES alumni but appeared in journals having lower impact factors (p < 0.05). A higher proportion of alumni were first authors of their publications as compared to first authorship by interns (p = 0.02). Research conducted during short-term cancer research programs can be scientifically meaningful and of comparable quality to publications by program alumni who engage in cancer research careers.
    Keywords:  Altmetric; Bibliometric; Publications; Research training programs
  22. World J Orthop. 2021 Mar 18. 12(3): 169-177
      BACKGROUND: There is little research investigating how human immunodeficiency virus (HIV) affects outcomes in orthopaedic surgery. With advances in treatment, HIV has become a chronic health problem and the chance of orthopaedic surgeons encountering it in clinical practice is increasing.AIM: To ascertain the quantity and quality of peer-reviewed publications in orthopaedic journals about HIV.
    METHODS: A search of the Web of Science database was carried out, identifying any articles relating to HIV published in orthopaedic journals. These were assessed for geographic origin and level of evidence.
    RESULTS: Of 48.7% of orthopaedic journals listed on the Web of Science database had published articles relating to HIV. There were 168 articles about HIV in orthopaedic journals with only 40.5% (n = 68) published in the time frame we analysed (January 2007 to September 2017). Very few articles came from low-income countries and any articles published from that setting were collaborations. All of the articles were low level of evidence.
    CONCLUSION: There is a need for more high level orthopaedic and trauma research investigating the effects of HIV, particularly research from low-income countries, where higher level research will help to guide improvements in their treatment of its musculoskeletal manifestations and complications.
    Keywords:  Analysis; Bibliometric analysis; Human immunodeficiency virus; Orthopaedic; Research
  23. BMJ Open. 2021 04 05. 11(4): e045176
      OBJECTIVE: Concerns have been raised that the COVID-19 pandemic has shifted research productivity to the disadvantage of women in academia, particularly in early career stages. In this study, we aimed to assess the pandemic's effect on women's COVID-19-related publishing over the first year of the pandemic.METHODS AND RESULTS: We compared the gender distribution of first authorships for 42 898 publications on COVID-19 from 1 February 2020 to 31 January 2021 to 483 232 publications appearing in the same journals during the same period the year prior. We found that the gender gap-the percentage of articles on which men versus women were first authors-widened by 14 percentage points during the COVID-19 pandemic, despite many pertinent research fields showing near equal proportions of men and women first authors publishing in the same fields before the pandemic. Longitudinal analyses revealed that the significant initial expansions of the gender gap began to trend backwards to expected values over time in many fields. As women may have been differentially affected depending on their geography, we also assessed the gender distribution of first authorships grouped by countries and geographical areas. While we observed a significant reduction of the shares of women first authors in almost all countries, longitudinal analyses confirmed a resolving trend over time.
    CONCLUSION: The reduction in women's COVID-19-related research output appears particularly concerning as many disciplines informing the response to the pandemic had near equal gender shares of first authorship in the year prior to the pandemic. The acute productivity drain with the onset of the pandemic magnifies deep-rooted obstacles on the way to gender equity in scientific contribution.
    Keywords:  COVID-19; general medicine (see internal medicine); health policy
  24. Front Pharmacol. 2021 ;12 639860
      Cohort studies investigating the treatment of chronic non-communicable diseases (NCDs) with traditional Chinese medicine (TCM) have considerably accumulated in recent years. To systematically and for the first time present the achievements and dilemmas of cohort studies, strict inclusion and exclusion criteria were used to search publications from the Web of Science, PubMed, Embase, Cochrane Library, and China National Knowledge Infrastructure databases for cohort studies on NCDs with TCM since the establishment of these databases. Information on the year of publication, exposure factors, diseases, and outcome indicators was obtained, and a literature quality assessment and bibliometric descriptive analysis were conducted. A total of 182 published articles involving 1,615,106 cases were included. There were 110 non-prospective cohort studies and 72 prospective cohort studies. The diseases involved in the cohort studies were, in the order of the number of published articles, malignant tumors (82 articles, 45.05%), cardiovascular diseases (35 articles, 19.23%), neurological diseases (29 articles, 15.93%), chronic kidney diseases (16 articles, 8.79%), liver cirrhosis (8 articles, 4.40%), diabetes mellitus (8 articles, 4.40%), and chronic respiratory diseases (4 articles, 2.20%). The study participants were mainly from China (177 articles, 97.25%). The number of cohort studies increased significantly in the last 5 years (65 articles, 35.71%), and following the Newcastle-Ottawa Scale (NOS) literature quality evaluation, the number of articles that received a score of four to five was high (116 articles, 63.73%), and the overall quality needs to be improved. The application of cohort studies in the field of TCM for the prevention and treatment of NCDs has developed rapidly in the past 5 years, focusing on the prevention and treatment of tumors as well as cardiovascular and cerebrovascular diseases. However, the design and implementation of cohort studies still have considerable limitations. To provide more clinical evidence, researcher should actively cooperate with evidence-based methodologists and standardize the implementation of cohort studies.
    Keywords:  bibliometric analysis; chinese medicine; cohort study; evidence-based medicine; non-communicable diseases
  25. J Hand Surg Am. 2021 Apr 04. pii: S0363-5023(21)00101-5. [Epub ahead of print]
      PURPOSE: The relationship between social media postings and academic citations of hand surgery research publications is not known. The objectives of this study were (1) to quantify adoption of social media for the dissemination of original research publications by 3 hand surgery journals, and (2) to determine the correlation between social media postings and academic citations in recent hand surgery research publications.METHODS: An Internet-based study was performed of all research articles from 3 hand surgery journals published from January 2018 to March 2019. A final sample of 472 original full-length scientific research articles was included. For each article, the total number of social media postings was determined using Twitter, as well as the number of tweets, number of retweets, number of tweets from an official outlet, and number of tweets from an author. The number of academic citations for each article was determined using Google Scholar.
    RESULTS: Average number of academic citations per article was 3.9. Average number of social media posts per article was 3.2, which consisted of an average of 1.3 tweets and 1.9 retweets per article. The number of academic citations per article was weakly correlated with the number of social medial postings, the number of tweets, and the number of retweets. The number of tweets from an official outlet and from an author were weakly correlated with academic citation.
    CONCLUSIONS: In the early adoption of social media for the dissemination of hand surgery research, there is a weak correlation between social media posting of hand surgery research and academic citation.
    CLINICAL RELEVANCE: Future studies are needed to assess whether social media posting of hand surgery research results in academic citations at the longer time intervals necessary for research publication maturity.
    Keywords:  Citation; on-line; research; retweet; social media
  26. PeerJ Comput Sci. 2021 ;7 e421
      One of the disciplines behind the science of science is the study of scientific networks. This work focuses on scientific networks as a social network having different nodes and connections. Nodes can be represented by authors, articles or journals while connections by citation, co-citation or co-authorship. One of the challenges in creating scientific networks is the lack of publicly available comprehensive data set. It limits the variety of analyses on the same set of nodes of different scientific networks. To supplement such analyses we have worked on publicly available citation metadata from Crossref and OpenCitatons. Using this data a workflow is developed to create scientific networks. Analysis of these networks gives insights into academic research and scholarship. Different techniques of social network analysis have been applied in the literature to study these networks. It includes centrality analysis, community detection, and clustering coefficient. We have used metadata of Scientometrics journal, as a case study, to present our workflow. We did a sample run of the proposed workflow to identify prominent authors using centrality analysis. This work is not a bibliometric study of any field rather it presents replicable Python scripts to perform network analysis. With an increase in the popularity of open access and open metadata, we hypothesise that this workflow shall provide an avenue for understanding scientific scholarship in multiple dimensions.
    Keywords:  Centrality measures; Citation network; Collaboration network; Crossref; Digital libraries; Ego network; Influence; Network analysis; OpenCitations; Python
  27. J Dent. 2021 Apr 06. pii: S0300-5712(21)00079-8. [Epub ahead of print] 103658
      OBJECTIVES: To assess the extent to which reports of dental Randomised Clinical Trials (RCTs) cite prior systematic reviews (SR) to explain the rationale or justification of the trial. Study characteristics that predicated the citation of SR in the RCT report were explored.METHODS: An electronic database search was undertaken to identify dental RCTs published between 1st January 2014 and 31st December 2019. All titles and abstracts were screened independently by two authors. Descriptive statistics and associations were calculated for the study characteristics. Logistic regression was used to identify predicators of SR inclusion in the trial report.
    RESULTS: 682 RCTs were analysed. 312 SRs were available of which 62.5% were cited and 37.5% were not included but were available in the literature within 12 months of trial commencement. An association between inclusion of SR and trial registration (P = 0.046) was detected. For the inclusion of a SR, authors based in Asia or other had lower odds than those based in Europe (OR: 0.53; 95% CI:0.34,0.82; p = 0.005). Every unit increase in journal impact factor increased the odds of SR inclusion (OR: 1.23; 95%: 1.06, 1.43; p = 0.006).
    CONCLUSIONS: A relatively high proportion of dental RCTs (37.5%) did not cite a SR in the introduction section to justify the rationale of the trial when a relevant SR was available. Trials conducted by a corresponding author based in Europe and published in journals with an increasing impact factor were also more likely to cite a SR.
    CLINICAL SIGNIFICANCE: Further progress is required to minimise research waste and ensure resources are channelled towards clinically useful trials which have an appropriate rationale and justification.
    Keywords:  CONSORT; Dentistry; SPIRIT; interventional studies; research waste; speciality journals; systematic reviews
  28. Am J Chin Med. 2021 Apr 07. 1-13
      Integrative medicine has become a vital component of patient care. It provides patient-centered care that is focused on prevention and overall well-being. As there has been a growing number of patients favoring a blend of conventional, complementary and alternative approaches, integrative medicine has exceeded beyond the evaluation of complementary therapies. However, it is noteworthy that there has been a dilemma of providing substantial evidence supporting the efficacy of some complementary and alternative therapies. This study's goals were to analyze publication trends, most productive journals, most productive funding agencies, most productive authors, most relevant keywords, and countries in the field of integrative medicine research. Additionally, science mapping included country collaboration analysis and thematic evolution analysis. The findings from this study showed a constant rise in annual growth of publications from 2000 to 2019; the United States was dominant in various analysis categories. In conclusion, a comprehensive review of the evolution of research of integrative medicine will help healthcare providers understand an overview of the present status while encouraging more evidence-based research for the betterment of integrative patient care.
    Keywords:  Bibliometric Analysis; Complementary and Alternative Medicine; Integrative Medicine; Review; Traditional Chinese Medicine
  29. J Am Acad Orthop Surg. 2021 Apr 07.
      INTRODUCTION: Level of evidence grading has become widely used in orthopaedics. This study reviewed clinical research articles published in leading orthopaedic journals to describe the association between level of evidence and number of future citations, which is one measure of an article's impact in the field.METHODS: The first 100 clinical research articles published in 2014 by each of the Journal of Bone and Joint Surgery, Clinical Orthopaedics and Related Research, and the American Journal of Sports Medicine were reviewed for level of evidence and article characteristics. Web of Science was used to identify the number of citations of each article over the following 5 years. Univariable analyses and multivariable linear regression were used to describe the associations.
    RESULTS: Three hundred articles were evaluated. Univariable analysis revealed no association between level of evidence and number of citations, with a median number of citations for level 1 articles of 23 (interquartile range [IQR], 14-49), level 2 articles 24 (IQR, 13-47), level 3 articles 22 (IQR, 13-40), and level 4 or 5 articles 20 (IQR, 10-36). Univariable analyses showed weak associations between other article characteristics and citations. Even after adjusting for other variables, the standardized regression coefficient for level 1 versus level 4 or 5 was only 0.14 and the overall model had a poor fit with an R2 of 0.18.
    CONCLUSIONS: Among clinical research articles published in leading orthopaedic journals, no notable association was found between level of evidence and future citations.
    CLINICAL RELEVANCE: Readers of the orthopaedic literature should understand that no association was found between level of evidence and future citations. Additional work is needed to better understand the effect level of evidence has on clinicians and researchers.
  30. PLoS One. 2021 ;16(4): e0249879
      This study compares publication pattern dynamics in the social sciences and humanities in five European countries. Three are Central and Eastern European countries that share a similar cultural and political heritage (the Czech Republic, Slovakia, and Poland). The other two are Flanders (Belgium) and Norway, representing Western Europe and the Nordics, respectively. We analysed 449,409 publications from 2013-2016 and found that, despite persisting differences between the two groups of countries across all disciplines, publication patterns in the Central and Eastern European countries are becoming more similar to those in their Western and Nordic counterparts. Articles from the Central and Eastern European countries are increasingly published in journals indexed in Web of Science and also in journals with the highest citation impacts. There are, however, clear differences between social science and humanities disciplines, which need to be considered in research evaluation and science policy.
  31. Environ Sci Pollut Res Int. 2021 Apr 05.
      Waste classification is to reduce solid waste and its associated environmental pollution. This paper applied bibliometrics to assess publications related to classification technology of domestic waste from 2000 to 2019. A total of 466 publications were retrieved. The results showed the number of citations and papers increased rapidly. The major publication type regarding waste classification technology is article and English is the primary language for academic communication. The research is multidisciplinary and interdisciplinary, and its research directions are mainly divided into "Engineering," "Environmental Sciences Economics," and "Chemistry." It was identified that Waste Management (85) published most of papers in this topic. Meanwhile, China (93) contributed the most of publications, followed by the USA (42), France (40), Japan (36), and Italy (28). European countries are in the leading position in the study of garbage classification technology. Plastics and waste metals were the existing focus of waste classification technology, and waste identification and classification has become an important classification method. In addition, we also summarized the current mainstream technology progress and possible research challenges.
    Keywords:  Bibliometric; Domestic waste; Hotpots; Identification classification; Mechanical classification; Research trend
  32. Int Marit Health. 2021 ;72(1): 64-75
      Stress is the most predominant and worldwide psychological human condition that undoubtedly impedes the state of mind of the individuals. During the last few years, a tremendous change and growth in the global publishing trend for human stress have been observed. Like other professionals (doctors, bankers, teachers, and businessmen), the mariners or seafarers are also being the most common victims of this human psychological disorder (stress) these days. The keywords "seafarer" and "stress" have been exposed to mine the research trend of the articles exploring the stress among the seafarers. From 2001 to 2020, more than six thousand (6211) human stress-based articles have been reported in Scopus indexing database. However, the number of articles related to the stress among seafarer is 136 only i.e. 2.18% of the human-stress based articles. The research related to the psychological disorder (stress) among seafarer has been increased during the last two decades. Germany, United Kingdom and Italy found to be the topmost countries for exploring the stress among the seafarer. The study concluded that the human psychological conditions like bulimia, anorexia nervosa, obsessive-compulsive disorder, schizophrenia, generalised anxiety disorder, cyclothymia, mood, conduct, and personality disorders along with stress still need to be extensively mined to diagnose the state of mind of seafarers.
    Keywords:  maritime industry; psychological disorders; seafarer; stress
  33. Clin Oral Investig. 2021 Apr 06.
      OBJECTIVES: The rapid production of a large volume of literature during the early phase of the COVID-19 outbreak created a substantial burden for clinicians and scientists. Therefore, this manuscript aims to identify and describe the scientific literature addressing COVID-19 from a dental research perspective, in terms of the manuscript origin, research domain, study type, and level of evidence (LoE).MATERIALS AND METHODS: Data were retrieved from Web of Science, Scopus, and PubMed. A descriptive analysis of bibliographic data, collaboration network, and keyword co-occurrence analysis were performed. Articles were further classified according to the field of interest, main research question, type of study, and LoE.
    RESULTS: The present study identified 296 dental scientific COVID-19 original papers, published in 89 journals, and co-authored by 1331 individuals affiliated with 429 institutions from 53 countries. Although 81.4% were single-country papers, extensive collaboration among the institutions of single countries (Italian, British, and Brazilian institutions) was observed. The main research areas were as follows: the potential use of saliva and other oral fluids as promising samples for COVID-19 testing, dental education, and guidelines for the prevention of COVID-19 transmission in dental practice. The majority of articles were narrative reviews, cross-sectional studies, and short communications. The overall LoE in the analyzed dental literature was low, with only two systematic reviews with the highest LoE I.
    CONCLUSION: The dental literature on the COVID-19 pandemic does not provide data relevant to the evidence-based decision-making process. Future studies with a high LoE are essential to gain precise knowledge on COVID-19 infection within the various fields of Dentistry.
    CLINICAL RELEVANCE: The published dental literature on COVID-19 consists principally of articles with a low level of scientific evidence which do not provide sufficient reliable high-quality evidence that is essential for decision making in clinical dental practice.
    Keywords:  Bibliometrics; COVID-19; Dentistry; Epidemics; Knowledge discovery; SARS-CoV-2
  34. World J Gastroenterol. 2021 Apr 07. 27(13): 1341-1353
      BACKGROUND: Irritable bowel syndrome (IBS) is a common functional gastrointestinal disorder. Dysregulation of the gut-brain axis plays a central role in the pathophysiology of IBS. It is increasingly clear that the microbiome plays a key role in the development and normal functioning of the gut-brain axis.AIM: To facilitate the identification of specific areas of focus that may be of relevance to future research. This study represents a bibliometric analysis of the literature pertaining to the microbiome in IBS to understand the development of this field.
    METHODS: The data used in our bibliometric analysis were retrieved from the Scopus database. The terms related to IBS and microbiome were searched in titles or abstracts within the period of 2000-2019. VOSviewer software was used for data visualization.
    RESULTS: A total of 13055 documents related to IBS were retrieved at the global level. There were 1872 scientific publications focused on the microbiome in IBS. There was a strong positive correlation between publication productivity related to IBS in all fields and productivity related to the microbiome in IBS (r = 0.951, P < 0.001). The United States was the most prolific country with 449 (24%) publications, followed by the United Kingdom (n = 176, 9.4%), China (n = 154, 8.2%), and Italy (n = 151, 8.1%). The h-index for all retrieved publications related to the microbiome in IBS was 138. The hot topics were stratified into four clusters: (1) The gut-brain axis related to IBS; (2) Clinical trials related to IBS and the microbiome; (3) Drug-mediated manipulation of the gut microbiome; and (4) The role of the altered composition of intestinal microbiota in IBS prevention.
    CONCLUSION: This is the first study to evaluate and quantify global research productivity pertaining to the microbiome in IBS. The number of publications regarding the gut microbiota in IBS has continuously grown since 2013. This finding suggests that the future outlook for interventions targeting the gut microbiota in IBS remains promising.
    Keywords:  Bibliometric; Brain gut axis; Irritable bowel syndrome; Microbiome; Microbiota; Scopus
  35. Am J Ophthalmol. 2021 Apr 06. pii: S0002-9394(21)00158-6. [Epub ahead of print]
      PURPOSE: To characterize clinician-scientists in ophthalmology and identify factors associated with successful research funding, income, and career satisfaction.DESIGN: Cross-sectional study METHODS: We conducted a survey of clinician-scientists in ophthalmology at U.S. academic institutions between April 17, 2019 and May 19, 2019. We collected information including 1) demographic data, 2) amount, type, and source of startup funding, first extramural grant, and first R01-equivalent independent grant, 3) starting and current salaries, and 4) Likert-scale measures of career satisfaction were analyzed using multivariate regression.
    RESULTS: 98 clinician-scientists in ophthalmology were surveyed across different ages (mean 48±11 years), research categories, institutional types, geographic regions, and academic ranks. Median startup funding was $50-99k, and median starting salary was $150-199k. Most investigators (67%) received their first extramural award from the National Eye Institute, mostly through K-award mechanisms (82%). The median time to receiving their first independent grant was 8 years, mostly through an R01 award (70%). Greater institutional startup support (P=0.027) and earlier extramural grant success (P=0.022) were associated with earlier independent funding. Male gender (P = 0.001) and MD degree (P=0.008) were associated with higher current salaries, but not starting salaries. Overall career satisfaction increased with career duration (P=0.011), but not with earlier independent funding (P=0.746) or higher income (P=0.300).
    CONCLUSIONS: Success in research funding by clinician-scientists in ophthalmology may be linked to institutional support and earlier acquisition of extramural grants, but does not impact academic salaries. Nevertheless, career satisfaction among clinician-scientists improves with time, which is not necessarily influenced by research or financial success.
    Keywords:  Career Satisfaction; Clinician-Scientist; Funding; Gender; Grant; National Eye Institute; Ophthalmology; Salary; survey
  36. PeerJ Comput Sci. 2019 ;5 e214
      Background: Given the vast number of standards and formats for bibliographical data, any program working with bibliographies and citations has to be able to interpret such data. This paper describes the development of Citation.js (, a tool to parse and format according to those standards. The program follows modern guidelines for software in general and JavaScript in specific, such as version control, source code analysis, integration testing and semantic versioning.Results: The result is an extensible tool that has already seen adaption in a variety of sources and use cases: as part of a server-side page generator of a publishing platform, as part of a local extensible document generator, and as part of an in-browser converter of extracted references. Use cases range from transforming a list of DOIs or Wikidata identifiers into a BibTeX file on the command line, to displaying RIS references on a webpage with added Altmetric badges to generating "How to cite this" sections on a blog. The accuracy of conversions is currently 27% for properties and 60% for types on average and a typical initialization takes 120 ms in browsers and 1 s with Node.js on the command line.
    Conclusions: Citation.js is a library supporting various formats of bibliographic information in a broad selection of use cases and environments. Given the support for plugins, more formats can be added with relative ease.
    Keywords:  Bibliography; Javascript
  37. J Eye Mov Res. 2019 Sep 30. 12(3):
      Many factors affect road safety, but research constantly shows that drivers are the major cause of critical situations that could potentially lead to a traffic accident in road traffic. Visual information is a crucial part of input information into the driving process; therefore, distractions of overt visual attention can potentially have a large impact on driving safety. Modern eye tracking technology enables researchers to gain precise insight into the direction and movement of a driver's gaze during various distractions. As this is an evolving and currently very relevant field of road safety research, the present paper sets out to analyse the current state of the research field and the most relevant publications that use eye tracking for research of distractions to a driver's visual attention. With the use of scientometrics and a qualitative review of the 139 identified publications that fit the inclusion criteria, the results revealed a currently expanding research field. The narrow research field is interdisciplinary in its core, as evidenced by the dispersion of publication sources and research variables. The main research gaps identified were performing research in real conditions, including a wider array of distractions, a larger number of participants, and increasing interdisciplinarity of the field with more author cooperation outside of their primary co-authorship networks.
    Keywords:  driver behaviour; driver distraction; eye tracking; literature review; scientometrics
  38. Proc Biol Sci. 2021 Apr 14. 288(1948): 20202581
      Words are the building blocks of communicating science. As our understanding of the world progresses, scientific disciplines naturally enrich their specialized vocabulary (jargon). However, in the era of interdisciplinarity, the use of jargon may hinder effective communication among scientists that do not share a common scientific background. The question of how jargon limits the transmission of scientific knowledge has long been debated but rarely addressed quantitatively. We explored the relationship between the use of jargon and citations, using 21 486 articles focusing on cave research, a multidisciplinary field particularly prone to terminological specialization, and where linguistic disagreement among peers is frequent. We demonstrate a significant negative relationship between the proportion of jargon words in the title and abstract and the number of citations a paper receives. Given that these elements are the hook to readers, we urge scientists to restrict jargon to sections of the paper where its use is unavoidable.
    Keywords:  glossary; linguistics; scientific communication; scientific writing; specialized vocabulary; terminology
  39. Am J Epidemiol. 2021 Apr 08. pii: kwab080. [Epub ahead of print]
      The Society for Epidemiologic Research's (SER) annual meeting is a major forum for sharing new research and promoting participants' career development. As such, evaluating representation in key presentation formats is critical. For the 3,257 presentations identified at the 2015-2017 SER annual meetings, we evaluated presenter characteristics, including gender, affiliation, subject area and h-index, and representation in three highlighted presentation formats: platform talks (n=382), invited symposium talks (n=273) and serving as a Concurrent Contributed Session or symposium chair (n=188). Data were abstracted from SER records, abstract booklets and programs. Gender was assessed using GenderChecker software and h-index using Scopus Application Programming Interface (API). Log-binomial models adjusted for participant characteristics and conference year. In adjusted models, women were less likely than men to present an invited symposium talk (RR 0.60, 95% CI 0.45, 0.81) versus those with accepted abstracts. Researchers from U.S. public universities, U.S. government institutions and international institutions were less likely to present a symposium talk or chair a Concurrent Contributed Session or symposium than researchers from U.S. private institutions. Research areas most represented in platform talks were epidemiologic methods, social epidemiology and cardiovascular epidemiology. Findings suggest differences in representation by gender, affiliation and subject area after accounting for h-index.
    Keywords:  Bibliometric; professional society; representation
  40. PeerJ Comput Sci. 2020 ;6 e313
      Background and Objective: The COVID-19 pandemic has caused severe mortality across the globe, with the USA as the current epicenter of the COVID-19 epidemic even though the initial outbreak was in Wuhan, China. Many studies successfully applied machine learning to fight COVID-19 pandemic from a different perspective. To the best of the authors' knowledge, no comprehensive survey with bibliometric analysis has been conducted yet on the adoption of machine learning to fight COVID-19. Therefore, the main goal of this study is to bridge this gap by carrying out an in-depth survey with bibliometric analysis on the adoption of machine learning-based technologies to fight COVID-19 pandemic from a different perspective, including an extensive systematic literature review and bibliometric analysis.Methods: We applied a literature survey methodology to retrieved data from academic databases and subsequently employed a bibliometric technique to analyze the accessed records. Besides, the concise summary, sources of COVID-19 datasets, taxonomy, synthesis and analysis are presented in this study. It was found that the Convolutional Neural Network (CNN) is mainly utilized in developing COVID-19 diagnosis and prognosis tools, mostly from chest X-ray and chest CT scan images. Similarly, in this study, we performed a bibliometric analysis of machine learning-based COVID-19 related publications in the Scopus and Web of Science citation indexes. Finally, we propose a new perspective for solving the challenges identified as direction for future research. We believe the survey with bibliometric analysis can help researchers easily detect areas that require further development and identify potential collaborators.
    Results: The findings of the analysis presented in this article reveal that machine learning-based COVID-19 diagnose tools received the most considerable attention from researchers. Specifically, the analyses of results show that energy and resources are more dispenses towards COVID-19 automated diagnose tools while COVID-19 drugs and vaccine development remains grossly underexploited. Besides, the machine learning-based algorithm that is predominantly utilized by researchers in developing the diagnostic tool is CNN mainly from X-rays and CT scan images.
    Conclusions: The challenges hindering practical work on the application of machine learning-based technologies to fight COVID-19 and new perspective to solve the identified problems are presented in this article. Furthermore, we believed that the presented survey with bibliometric analysis could make it easier for researchers to identify areas that need further development and possibly identify potential collaborators at author, country and institutional level, with the overall aim of furthering research in the focused area of machine learning application to disease control.
    Keywords:  Bibliometric analysis; COVID-19 diagnosis tool; COVID-19 pandemic; Convolutional neural network; Machine learning
  41. Nat Hum Behav. 2021 Apr 05.
      Teamwork is one of the most prominent features in modern science. It is now well understood that team size is an important factor that affects the creativity of the team. However, the crucial question of how the character of research studies is related to the freshness of a team remains unclear. Here, we quantify the team freshness according to the absence of prior collaboration among team members. Our results suggest that papers produced by fresher teams are associated with greater originality and a greater multidisciplinary impact. These effects are even stronger in larger teams. Furthermore, we find that freshness defined by new team members in a paper is a more effective indicator of research originality and multidisciplinarity compared with freshness defined by new collaboration relationships among team members. Finally, we show that the career freshness of team members is also positively correlated with the originality and multidisciplinarity of produced papers.
  42. PeerJ Comput Sci. 2019 ;5 e199
      Background: The 2010 reform of the Italian university system introduced the National Scientific Habilitation (ASN) as a requirement for applying to permanent professor positions. Since the CVs of the 59,149 candidates and the results of their assessments have been made publicly available, the ASN constitutes an opportunity to perform analyses about a nation-wide evaluation process.Objective: The main goals of this paper are: (i) predicting the ASN results using the information contained in the candidates' CVs; (ii) identifying a small set of quantitative indicators that can be used to perform accurate predictions.
    Approach: Semantic technologies are used to extract, systematize and enrich the information contained in the applicants' CVs, and machine learning methods are used to predict the ASN results and to identify a subset of relevant predictors.
    Results: For predicting the success in the role of associate professor, our best models using all and the top 15 predictors make accurate predictions (F-measure values higher than 0.6) in 88% and 88.6% of the cases, respectively. Similar results have been achieved for the role of full professor.
    Evaluation: The proposed approach outperforms the other models developed to predict the results of researchers' evaluation procedures.
    Conclusions: Such results allow the development of an automated system for supporting both candidates and committees in the future ASN sessions and other scholars' evaluation procedures.
    Keywords:  ASN; Academic assessment; Data Processing; Informetrics; Machine Learning; National Scientific Habilitation; Predictive Models; Research Evaluation; Science of Science; Scientometrics