bims-evares Biomed News
on Evaluation of research
Issue of 2021–11–07
thirty-six papers selected by
Thomas Krichel, Open Library Society



  1. Asian J Psychiatr. 2021 Oct 20. pii: S1876-2018(21)00345-2. [Epub ahead of print]66 102889
       AIM: This study aims to evaluate the publications on delirium by using bibliometric analysis.
    METHODOLOGY: The Scopus database was evaluated for publications on delirium, during the period of 2001-20. The search results were analyzed for the origin of country, origin of institution, authorship, collaborations, type of article, source of funding, and number of citations.
    RESULTS: The searches of Scopus database yielded 22,941 publications, originating from 139 countries. Compared to the decade of 2001-2010, the number of publications on delirium doubled in the decade of 2011-2020. The majority of the papers were research articles (58.26%), and the papers were cited for mean number of 20.53 times. Only a small proportion of the papers were based on funding (13.14%). Maximum number of papers emerged from United States of America. In terms of institutional affiliations, among the authors from top 20 institutes, 15 were from United States, 2 from Netherlands and 1 each from Canada, Germany and United Kingdom. In terms of authors, the research productivity of the top 20 most productive authors varied from 172 to 612 publications with 12 authors belonging to United States, 2 from Italy and 1 each from Canada, Greece, India, Ireland, Netherland and the United Kingdom. The maximum number of papers were published in Journal of the American Geriatric Society and based on the number of citations the New England Journal of Medicine was the most impactful journal.
    CONCLUSION: Over the years number of publications on delirium have increased, majority of the publications have emerged from United States.
    Keywords:  Bibliometrics; Delirium; Scientometrics
    DOI:  https://doi.org/10.1016/j.ajp.2021.102889
  2. Front Psychol. 2021 ;12 721872
      Objectives: The purpose of this study was to explore the current status and trends of acupuncture for depression in the last decade and provide new insights for researchers in future studies. Methods: The articles regarding acupuncture treatment for depression published between 2011 and 2020 were extracted from the Web of Science Core Collection. We used CiteSpace to analyze data on publications, countries, institutions, cited journals, cited authors, cited references, keywords, and citation bursts about acupuncture and depression. Results: A total of 1,032 publications were obtained from 2011 to 2020. We identified the most prolific journals, countries, institutions, and authors in the field of acupuncture for depression in the last decade. The most prolific country and institutions were the People's Republic of China and KyungHee University, respectively. Evidence-based Complementary and Alternative Medicine was the most prolific and cited journal. The author with the highest centrality was Zhangjin Zhang, and the author with the most publications was Park Hi-Joon. The keyword "cognitive behavioral therapy" was first for research developments with the highest citation burst. The five hot topics in acupuncture on depression were "acupuncture," "depression," "electro-acupuncture," "quality of life," and "anxiety." Conclusions: The results from this bibliometric study provide insight into the research trends in acupuncture therapy for depression, and the current status and trends of the past decade, which may help researchers determine the current status, hotspots, and frontier trends in this field.
    Keywords:  CiteSpace; Web of Science; acupuncture; bibliometric analysis; depression
    DOI:  https://doi.org/10.3389/fpsyg.2021.721872
  3. Front Psychol. 2021 ;12 722332
      Numerous students suffer from academic procrastination; it is a common problem and phenomenon in academic settings. Many previous researchers have analyzed its relationships with other factors, such as self-regulation and academic success. This paper aims to provide a full outline of academic procrastination and explore the current hot spots and trends. Bibliometrix and VOSviewer were used to conduct quantitative analysis. The data was collected from the Web of Science core collection database, which contains 1,240 articles from the years 1938 to 2021. The analysis shows that the publication of articles on academic procrastination has been rapidly increasing since 1993. In terms of the most influential countries and institutions, the United states took a prominent lead among all countries, and the most productive institutions in this area were the University of Washington and University of California, Los Angeles. By analyzing the authors, we see that most authors like working with a few collaborators, leading to main groups of authors, such as Murat Balkis and June J. Pilcher. The most frequently cited author was Esther D. Rothblum. Based on the co-citation journals network, Personality and Individual Differences was the prolific and influential journal referring to the number of citations and articles it received. The VOSviewer tool identified the hot spots of academic procrastination, which were mainly distributed as follows: (a) procrastination, (b) academic procrastination, (c) self-regulation, (d) academic performance, and (e) motivation. Therefore, this paper is helpful for scholars and practitioners to know the trend of academic procrastination research comprehensively.
    Keywords:  VOSviewer; academic procrastination; bibliometric analysis; bibliometrix tool; the trend
    DOI:  https://doi.org/10.3389/fpsyg.2021.722332
  4. PLoS One. 2021 ;16(11): e0259240
       INTRODUCTION: In the past 22 years, a large number of publications have reported that liver kinase B1 (LKB1) can regulate a variety of cellular processes and play an important role in many diseases. However, there is no systematic bibliometric analysis on the publications of LKB1 to reveal the research hotspots and future direction.
    METHODS: Publications were retrieved from the Web of Science Core Collection (WoSCC), Scopus, and PubMed databases. CiteSpace and VOSviewer were used to analysis the top countries, institutions, authors, source journals, discipline categories, references, and keywords.
    RESULTS: In the past 22 years, the number of LKB1 publications has increased gradually by year. The country, institution, author, journals that have published the most articles and cited the most frequently were the United States, Harvard University, Prof. Benoit Viollet, Journal of Biochemistry and Plos One. The focused research hotspot was the molecular functions of LKB1. The emerging hotspots and future trends are the clinical studies about LKB1 and co-mutated genes as biomarkers in tumors, especially in lung adenocarcinoma.
    CONCLUSIONS: Our research could provide knowledge base, frontiers, emerging hotspots and future trends associated with LKB1 for researchers in this field, and contribute to finding potential cooperation possibilities.
    DOI:  https://doi.org/10.1371/journal.pone.0259240
  5. Int Ophthalmol. 2021 Nov 05.
       BACKGROUND: To explore the research trends for uveal melanoma with bibliometric methods using Web of Science Core Collection (WoSCC) and PubMed (PM).
    METHODS: To find UM-related studies, "uveal melanoma" was used as search term in the WoSCC and PM for the period time from 2000 to 2020. Bibliographic coupling analysis was used to investigate the journals with the highest number of UM-related publications. VOSviewer (VV) was used for mapping the knowledge domain and visualizing the co-occurrence of terms, authors, organizations, countries, co-citation literature, and keywords. The knowledge map based on WoSCC and PM was compared.
    RESULTS: In the WoSCC 3,748 articles were found, while in PM the search resulted in 3,403 articles. The number of original articles has steadily grown in general in the past two decades. The top ten authors were contributing to 23% (n = 856) of all publications, while the top 10 institutions published 41% (n = 1524) of all articles. The top 3 journals with the highest number of publications for UM-related research included Investigative ophthalmology & visual science, Ophthalmology, and British Journal of Ophthalmology. Co-occurrence analysis based on author keywords showed 6 clusters. The most frequent keywords included are metastasis, prognosis, and brachytherapy. The latest research hotspots focused on BAP1, immunotherapy and GNAQ.
    CONCLUSIONS: Genetics and immunology are the latest research frontiers in uveal melanoma. There is a clear need for interdisciplinary, molecular and clinical research approaches to improve the fatal prognosis of uveal melanoma patients.
    Keywords:  Bibliometric analysis; Knowledge domain; Uveal melanoma; VOSviewer; Visualization
    DOI:  https://doi.org/10.1007/s10792-021-02098-0
  6. J Prosthet Dent. 2021 Nov 02. pii: S0022-3913(21)00523-0. [Epub ahead of print]
       STATEMENT OF PROBLEM: Minimally invasive dentistry is a technique for the maximal preservation of healthy tooth structures and has been a focus of attention in dental research. However, a detailed bibliometric analysis focusing on research related to minimally invasive dentistry is lacking.
    PURPOSE: The purpose of this bibliometric analysis was to analyze leading countries and organizations and to identify the preferred journals, the most productive authors, and the most commonly used keywords in the field of minimally invasive dentistry.
    MATERIAL AND METHODS: The search was performed by using the Scopus database, and publications pertinent to the field of minimally invasive dentistry from 1994 to 2021 were identified. A bibliometric analysis with reference to citations and documents, authors, journals, and keywords was performed. A total of 391 articles published in Scopus indexed journals between 1994 and January 2021 were analyzed by using a software program.
    RESULTS: A continuing yet steady increase in research publications was identified, with a substantial increase in publications since 2013. The United States and Germany were the countries that published the most articles (98 and 46, respectively), articles that received 1877 and 806 citations, respectively. Cardiff University, UK, was the most productive organization that received 212 citations. The most highly cited articles were from the Q1 category. Blum from King's College London was the highest-cited author in this field.
    CONCLUSIONS: Considerable advancement has been made in minimally invasive dentistry, as demonstrated by the increase in the number of publications linked with collaboration among various authors, nations, and institutes. This citation analysis gives a perspective on the progress of research in the field of minimally invasive dentistry and allows identification of the most significant and pertinent research areas.
    DOI:  https://doi.org/10.1016/j.prosdent.2021.09.023
  7. J Pediatr Orthop. 2021 Nov 01.
       BACKGROUND: Academic conferences such as the annual Pediatric Orthopaedic Society of North America (POSNA) meeting provide opportunities to present up-to-date scientific work that can influence clinical decision making. This study reviewed 4 years of abstracts presented at POSNA to assess trends in poster and podium presentation publication rates and associated metrics and the impact of academic presentations on the pediatric orthopaedic literature.
    METHODS: All abstracts presented at POSNA annual meetings from 2013 to 2016 were analyzed for presentation type, subspeciality, level of evidence, study design, peer-reviewed publication within 4 years of presentation, 1-year publication rates, journal impact factors, number of authors, and citations of the final publication. χ2, analysis of variance, and t tests were conducted to measure independence of variables. Statistical significance was indicated at P<0.05.
    RESULTS: A total of 1135 abstracts were included with 676 published in peer-reviewed journals by August 2020 and 38 excluded because of publication before presentation. The number of accepted abstracts increased yearly. Total of 58.2% of POSNA abstracts were published and 42.5% had the same first author on the final manuscript. Average journal impact factor was 2.60±1.30 with a mean 14.3±16.0 citations. Podium presentations were significantly more likely to be published than poster presentations (63.1% vs. 51.2%, P<0.001) and in higher-impact factor journals. Level I evidence abstracts were published in journals with an average 1.663 higher impact factor than level V evidence abstracts, with no significant difference between overall publication rate and study type (P=0.69) or level of evidence (P=0.95) for podium presentations. The Journal of Pediatric Orthopaedics accepted the most abstracts, 38.4% overall, with 64.1% of acceptances resulting from podium presentations and no difference in time to publication based on subspecialty.
    CONCLUSIONS: The overall publication rate for POSNA abstracts has increased 8.7% from prior analysis. Podium presentations are more likely than poster presentations to be published, overall and in higher-impact journals, and are cited more frequently.
    LEVEL OF EVIDENCE: Level IV-descriptive retrospective epidemiological study.
    DOI:  https://doi.org/10.1097/BPO.0000000000001994
  8. JMIR Public Health Surveill. 2021 11 01. 7(11): e32639
       BACKGROUND: The Eastern Mediterranean Region (EMR) hosts some of the world's worst humanitarian and health crises. The implementation of health surveillance in this region has faced multiple constraints. New and novel approaches in surveillance are in a constant state of high and immediate demand. Identifying the existing literature on surveillance helps foster an understanding of scientific development and thus potentially supports future development directions.
    OBJECTIVE: This study aims to illustrate the scientific production, quantify the scholarly impact, and highlight the characteristics of publications on public health surveillance in the EMR over the past decade.
    METHODS: We performed a Scopus search using keywords related to public health surveillance or its disciplines, cross-referenced with EMR countries, from 2011 to July 2021. Data were exported and analyzed using Microsoft Excel and Visualization of Similarities Viewer. Quality of journals was determined using SCImago Journal Rank and CiteScore.
    RESULTS: We retrieved 1987 documents, of which 1927 (96.98%) were articles or reviews. There has been an incremental increase in the number of publications (exponential growth, R2=0.80) over the past decade. Publications were mostly affiliated with Iran (501/1987, 25.21%), the United States (468/1987, 23.55%), Pakistan (243/1987, 12.23%), Egypt (224/1987, 11.27%), and Saudi Arabia (209/1987, 10.52%). However, Iran only had links with 40 other countries (total link strength 164), and the biggest collaborator from the EMR was Egypt, with 67 links (total link strength 402). Within the other EMR countries, only Morocco, Lebanon, and Jordan produced ≥79 publications in the 10-year period. Most publications (1551/1987, 78.06%) were affiliated with EMR universities. Most journals were categorized as medical journals, and the highest number of articles were published in the Eastern Mediterranean Health Journal (SCImago Journal Rank 0.442; CiteScore 1.5). Retrieved documents had an average of 18.4 (SD 125.5) citations per document and an h-index of 66. The top-3 most cited documents were from the Global Burden of Diseases study. We found 70 high-frequency terms, occurring ≥10 times in author keywords, connected in 3 clusters. COVID-19, SARS-CoV-2, and pandemic represented the most recent 2020 cluster.
    CONCLUSIONS: This is the first research study to quantify the published literature on public health surveillance and its disciplines in the EMR. Research productivity has steadily increased over the past decade, and Iran has been the leading country publishing relevant research. Recurrent recent surveillance themes included COVID-19 and SARS-CoV-2. This study also sheds light on the gaps in surveillance research in the EMR, including inadequate publications on noncommunicable diseases and injury-related surveillance.
    Keywords:  Eastern Mediterranean Region; bibliometric analysis; literature; public health; research; review; surveillance
    DOI:  https://doi.org/10.2196/32639
  9. Diabetes Metab Syndr. 2021 Oct 29. pii: S1871-4021(21)00345-3. [Epub ahead of print]15(6): 102325
       BACKGROUND AND AIMS: The publications on COVID-19 have tremendously increased. Thus, there is a need to summarize and curate this evidence from the literature. This study determined the characteristics and trends of published articles about COVID-19 in Southeast Asia (SEA) through a bibliometric analysis.
    METHODS: A systematic review of literature on COVID-19 in SEA countries was performed using the Scopus database from 2020 to August 2021. Bibliometric information was obtained from Scopus and network visualization was conducted using VOSviewer software.
    RESULTS: A total of 706 articles were obtained in this study. The number of publications increased exponentially from 2020 up to present. Most of the research outputs were produced by authors and institutions from Malaysia, Singapore, and Thailand. The other countries with highest cases of COVID-19 in SEA such as Indonesia and Philippines have lower scientific output in this field. GDP, research and development expenditure, number of researchers and physicians, and international collaborations were significantly correlated to research productivity in COVID-19 in SEA.
    CONCLUSION: This study showed the trends and gaps for research in SEA and the facilitators of research productivity in COVID-19. SEA countries should consider increasing the support for COVID-19 research to generate knowledge that can be used in controlling COVID-19 in the region.
    Keywords:  ASEAN; Bibliometrics; Coronavirus; Infection; Pandemic; SARS-CoV-2
    DOI:  https://doi.org/10.1016/j.dsx.2021.102325
  10. Anat Rec (Hoboken). 2021 Nov 05.
      The standardization, objectification, and essence research of traditional Chinese medicine (TCM) syndrome influence the modernization and international development of TCM syndrome. A total of 253 relevant publications collected from the Web of Science Core Collection database from 2006 to 2020 were analyzed by bibliometric and content methods. The co-occurrence analysis of countries, institutions, journals, authors, and keywords analysis were carried out by using Citespace software. The high-yield institutions and high-impact authors contributed to TCM syndrome publications were concentrated in China. Since 2012, driven by some groundbreaking publications, the number of TCM syndrome literatures has increased rapidly. According to the results of bibliometric and content analysis, research hotspots in TCM syndrome in the last 15 years can be summarized in six aspects: (a) objectification research of four TCM diagnostic methods, (b) omics technology for the essence research of TCM syndrome, (c) research on TCM syndrome evaluation scale, (d) metagenomic technology for the essence research of TCM syndrome, (e) data mining technology for TCM syndrome differentiation, and (f) systematic research on TCM syndromes of chronic hepatitis B. Emerging trends can be identified according to the most recent keywords bursts: (a) TCM syndrome diagnostic models with multiple indexes should be constructed to develop personalized medicine. (b) The connotation of TCM syndrome should be verified through "syndrome detecting from recipe used," and the screened potential markers of TCM syndrome need clinical verification. (c) The intervention and integration of multi-disciplines is expected to find a new breakthrough in the research of TCM syndrome.
    Keywords:  bibliometric analysis; content analysis; objectification; standardization; traditional Chinese medicine syndrome
    DOI:  https://doi.org/10.1002/ar.24821
  11. Front Oncol. 2021 ;11 673733
       Introduction: Thyroid cancer (TC) is the most common neck malignancy. However, a large number of publications of TC have not been well summarized and discussed with more comprehensive methods. The purpose of this bibliometric study is to summarize scientific publications during the past three decades in the field of TC using a machine learning method.
    Material and Methods: Scientific publications focusing on TC from 1990 to 2020 were searched in PubMed using the MeSH term "thyroid neoplasms". Full associated data were downloaded in the format of PubMed, and extracted in the R platform. Latent Dirichlet allocation (LDA) was adopted to identify the research topics from the abstract of each publication using Python.
    Results: A total of 34,692 publications related to TC from the last three decades were found and included in this study with an average of 1,119.1 publications per year. Clinical studies and experimental studies shared the most proportion of publications, while the proportion of clinical trials remained at a relatively small level (5.87% as the highest in 2004). Thyroidectomy was the lead MeSH term, followed by prognosis, differential diagnosis, and fine-needle biopsy. The LDA analyses showed the study topics were divided into four clusters, including treatment management, basic research, diagnosis research, epidemiology, and cancer risk. However, a relatively weak connection was shown between treatment managements and basic researches. Top 10 most cited publications in recent years particularly highlighted the applications of active surveillance in TC.
    Conclusion: Thyroidectomy, differential diagnosis, genomic analysis, active surveillance are the most concerning topics in TC researches. Although the BRAF-targeted therapy is under development with promising results, there is still an urgent need for conversions from basic studies to clinical practice.
    Keywords:  bibliometrics; latent Dirichlet allocation; machine learning; natural language processing; thyroid cancer
    DOI:  https://doi.org/10.3389/fonc.2021.673733
  12. Rev Saude Publica. 2021 ;pii: S0034-89102021000100255. [Epub ahead of print]55 46
       OBJECTIVE: To investigate gender inequity in the scientific production of the University of Sao Paulo.
    METHODS: Members of the University of Sao Paulo faculty are the study population. The Web of Science repository was the source of the publication metrics. We selected the measures: total publications and citations, average of citations per year and item, H-index, and history of citations between 1950 and 2019. We used the name of the faculty member as a proxy to the gender identity. We use descriptive statistics to characterize the metrics. We evaluated the scissors effect by selecting faculty members with a high H-index. The historical series of citations was projected until 2100. We carry out analyses for the general population and working time subgroups: less than 10 years, 10 to 20 years, and 20 years or more.
    RESULTS: Of the 8,325 faculty members, we included 3,067 (36.8%). Among those included, 1,893 (61.7%) were male and 1,174 (38.28%) female. The male gender presented higher values in the publication metrics (average of articles: M = 67.0 versus F = 49.7; average of citations/year: M = 53.9 versus F = 35.9), and H-index (M = 14.5 versus F = 12.4). Among the 100 individuals with the highest H-index (≥ 37), 83% are male. The male curve grows faster in the historical series of citations, opening a difference between the groups whose separation is confirmed by the projection.
    DISCUSSION: Scientific production at the Universidade de São Paulo is subject to a gender bias. Two-thirds of the faculty are male, and hiring over the past few decades perpetuates this pattern. The large majority of high impact faculty members are male.
    CONCLUSION: Our analysis suggests that the Universidade de São Paulo will not overcome gender inequality in scientific production without substantive affirmative action. Development does not happen by chance but through choices that are affirmative, decisive, and long-term oriented.
    DOI:  https://doi.org/10.11606/s1518-8787.2021055002939
  13. JMIR Med Inform. 2021 Nov 01. 9(11): e31142
       BACKGROUND: The recent surge in clinical and nonclinical health-related data has been accompanied by a concomitant increase in personal health data (PHD) research across multiple disciplines such as medicine, computer science, and management. There is now a need to synthesize the dynamic knowledge of PHD in various disciplines to spot potential research hotspots.
    OBJECTIVE: The aim of this study was to reveal the knowledge evolutionary trends in PHD and detect potential research hotspots using bibliometric analysis.
    METHODS: We collected 8281 articles published between 2009 and 2018 from the Web of Science database. The knowledge evolution analysis (KEA) framework was used to analyze the evolution of PHD research. The KEA framework is a bibliometric approach that is based on 3 knowledge networks: reference co-citation, keyword co-occurrence, and discipline co-occurrence.
    RESULTS: The findings show that the focus of PHD research has evolved from medicine centric to technology centric to human centric since 2009. The most active PHD knowledge cluster is developing knowledge resources and allocating scarce resources. The field of computer science, especially the topic of artificial intelligence (AI), has been the focal point of recent empirical studies on PHD. Topics related to psychology and human factors (eg, attitude, satisfaction, education) are also receiving more attention.
    CONCLUSIONS: Our analysis shows that PHD research has the potential to provide value-based health care in the future. All stakeholders should be educated about AI technology to promote value generation through PHD. Moreover, technology developers and health care institutions should consider human factors to facilitate the effective adoption of PHD-related technology. These findings indicate opportunities for interdisciplinary cooperation in several PHD research areas: (1) AI applications for PHD; (2) regulatory issues and governance of PHD; (3) education of all stakeholders about AI technology; and (4) value-based health care including "allocative value," "technology value," and "personalized value."
    Keywords:  bibliometrics; knowledge evolution trends; personal health data; research hotspots
    DOI:  https://doi.org/10.2196/31142
  14. J Emerg Manag. 2021 Special Issue on COVID-19;18(7):pii: jem.0530. [Epub ahead of print]18(7): 63-69
      This paper examines the publications on COVID-19 in Dimensions database. A total of 13,697 records for the year 2020 have been extracted and analyzed under various categories. MS-Excel has been used to analyze the data with simple calculations. It is found that the "proximal origin of SARS-CoV-2" article has received highest Altmetric Score of 31,680 among the top 10 articles, and also it is found that "Clinical features of patients infected with 2019 novel corona virus in Wuhan, China" article has received the highest number of citations (1,400). The source "medRxiv" has pub-lished the highest number of research articles (1,314), and the source "The Lancet" has received the highest number of citations (4,915). The author "Elisabeth Mahase" has published more number of articles (41) on COVID-19.
    DOI:  https://doi.org/10.5055/jem.0530
  15. Front Cell Dev Biol. 2021 ;9 754880
      Background: Crosstalk of circular RNAs (circRNAs) and microRNAs (miRNAs) refers to the communication and co-regulation between them. circRNAs can act as miRNAs sponges, and miRNAs can mediate circRNAs. They interact to regulate gene expression and participate in the occurrence and development of various human diseases. Methods: Publications on the crosstalk between miRNAs and circRNAs in human diseases were collected from Web of Science. The collected material was limited to English articles and reviews. CiteSpace and Microsoft Excel were used for bibliographic analysis. Results: A total of 1,013 papers satisfied the inclusion criteria. The publication outputs and types of researched diseases were analyzed, and bibliographic analysis was used to characterize the most active journals, countries, institutions, keywords, and references. The annual number of publications remarkably increased from 2011 to 2020. Neoplasm was the main research hotspot (n = 750 publications), and Biochemical and Biophysical Research Communications published the largest number of papers (n = 64) on this topic. Nanjing Medical University ranked first among institutions actively engaged in this field by publishing 72 papers, and China contributed 96.84% of the 1,013 papers (n = 981 publications) analyzed. Burst keywords in recent years included glioblastoma, miR-7, skeletal muscle, and non-coding RNA. Conclusion: Crosstalk between miRNAs and circRNAs in human diseases is a popular research topic. This study provides important clues on research trends and frontiers.
    Keywords:  bibliography; cancer; circular RNA; crosstalk; microRNA
    DOI:  https://doi.org/10.3389/fcell.2021.754880
  16. J Plast Reconstr Aesthet Surg. 2021 Oct 22. pii: S1748-6815(21)00478-2. [Epub ahead of print]
      The classic canonical publication trajectory for academicians has been well-described by a rapid increase followed by a slower decrease in productivity, leading to a plateau. This trajectory has not been investigated in plastic surgery. In this communication, we aimed to: (1) visualize the publication trajectory per decade for plastic surgeons certified from 1980 to 2010, and (2) characterize and quantify the changes in publishing trends across decades. A list of plastic and reconstructive surgeons board certified between 1980 and 2010 was obtained. Number of publications per year was recorded for each plastic surgeon. The median cumulative publication trajectory was graphed for each decade. Kruskal-Wallis analysis was performed to determine whether there were differences in number of publications across generations. The trajectory for a surgeon from the 1980s follows the established canonical trajectory. Surgeons from the 1990s and 2000s had significantly more publications by board certification than those from the 1980s (7 and 8 vs. 5, respectively, p < 0.01). Surgeons from the 2010s on average achieved 8 publications by board certification. It is clear that the publication arc for plastic surgeons from successive generations has greatly changed. Over the last 40 years, there has been a trend for increasing productivity and involvement in research at a much earlier stage in career, potentially due to increasing demands for matching into residency programs.
    Keywords:  Academic productivity; Academic promotion; Plastic surgery; Publication trajectory; Research productivity
    DOI:  https://doi.org/10.1016/j.bjps.2021.09.039
  17. Scientometrics. 2021 ;126(4): 3153-3192
      Artificial intelligence, as an emerging and multidisciplinary domain of research and innovation, has attracted growing attention in recent years. Delineating the domain composition of artificial intelligence is central to profiling and tracking its development and trajectories. This paper puts forward a bibliometric definition for artificial intelligence which can be readily applied, including by researchers, managers, and policy analysts. Our approach starts with benchmark records of artificial intelligence captured by using a core keyword and specialized journal search. We then extract candidate terms from high frequency keywords of benchmark records, refine keywords and complement with the subject category "artificial intelligence". We assess our search approach by comparing it with other three recent search strategies of artificial intelligence, using a common source of articles from the Web of Science. Using this source, we then profile patterns of growth and international diffusion of scientific research in artificial intelligence in recent years, identify top research sponsors in funding artificial intelligence and demonstrate how diverse disciplines contribute to the multidisciplinary development of artificial intelligence. We conclude with implications for search strategy development and suggestions of lines for further research.
    Keywords:  Artificial intelligence; Bibliometric analysis; Emerging technology; Research trends; Search strategy
    DOI:  https://doi.org/10.1007/s11192-021-03868-4
  18. Cont Lens Anterior Eye. 2021 Oct 31. pii: S1367-0484(21)00162-4. [Epub ahead of print] 101527
       BACKGROUND: Contact lenses can cause complications in 2/3 of the total population, but in most cases, they are mild and easy to manage. However, most of the studies are short-term. The aim of the study was to analyze the publications on the long-term effects of contact lens wear to understand the current research landscape through the analysis of dating networks as well as determining the different research areas and the most cited publications.
    METHODS: The Web of Science database was used to perform the publication search, looking for the terms "Long-term" AND "contact lens wear" within the period between 1977 and January 2021. The CitNetExplorer and CiteSpace software were then used to conduct the publication analysis. To obtain the graphics, the VOSviewer software was used.
    RESULTS: A total of 721 publications were found with 2999 citations generated within the network. The year 2010 was singled out as a "key year", considering the number of publications that emerged in that year and increase in adaptations of contact lens worldwide. The most widely cited publication was "Effects of long-term extended contact lens wear on the human cornea", an article by Holden et al., which was published in 1985. By using the clustering function, we were able to establish three clusters that encompassed the different research areas within this field: morphological changes, the loss of corneal sensitivity, tear film characteristics and longitudinal changes in ocular physiology.
    CONCLUSIONS: The main research topic in this field focuses on the morphological changes that take place in the corneal endothelial cell layer.
    Keywords:  Citation network; Contact lens; Long-term effect
    DOI:  https://doi.org/10.1016/j.clae.2021.101527
  19. Scientometrics. 2021 Oct 24. 1-24
      As an important biomedical database, PubMed provides users with free access to abstracts of its documents. However, citations between these documents need to be collected from external data sources. Although previous studies have investigated the coverage of various data sources, the quality of citations is underexplored. In response, this study compares the coverage and citation quality of five freely available data sources on 30 million PubMed documents, including OpenCitations Index of CrossRef open DOI-to-DOI citations (COCI), Dimensions, Microsoft Academic Graph (MAG), National Institutes of Health's Open Citation Collection (NIH-OCC), and Semantic Scholar Open Research Corpus (S2ORC). Three gold standards and five metrics are introduced to evaluate the correctness and completeness of citations. Our results indicate that Dimensions is the most comprehensive data source that provides references for 62.4% of PubMed documents, outperforming the official NIH-OCC dataset (56.7%). Over 90% of citation links in other data sources can also be found in Dimensions. The coverage of MAG, COCI, and S2ORC is 59.6%, 34.7%, and 23.5%, respectively. Regarding the citation quality, Dimensions and NIH-OCC achieve the best overall results. Almost all data sources have a precision higher than 90%, but their recall is much lower. All databases have better performances on recent publications than earlier ones. Meanwhile, the gaps between different data sources have diminished for the documents published in recent years. This study provides evidence for researchers to choose suitable PubMed citation sources, which is also helpful for evaluating the citation quality of free bibliographic databases.
    Keywords:  COCI; Dimensions; Microsoft academic graph; NIH-OCC; Open citation; PubMed; Semantic scholar
    DOI:  https://doi.org/10.1007/s11192-021-04191-8
  20. Anesth Analg. 2021 Sep 13.
      At the outbreak of World War II (WWII), anesthesiology was struggling to establish itself as a medical specialty. The battlefield abruptly exposed this young specialty to the formidable challenge of mass casualties, with an urgent need to provide proper fluid resuscitation, airway management, mechanical ventilation, and analgesia to thousands. But while Europe was suffering under the Nazi boot, anesthesia was preparing to rise to the challenge posed by the impending war. While war brings death and destruction, it also opens the way to medical advances. The aim of this study is to measure the evolution of anesthesia owing to WWII. We conducted a retrospective observational bibliometric study involving a quantitative and statistical analysis of publications. The following 7 journals were selected to cover European and North American anesthesia-related publications: Anesthesia & Analgesia, the British Journal of Anaesthesia, Anesthesiology, Schmerz-Narkose-Anaesthesie, Surgery, La Presse Médicale, and The Military Surgeon (later Military Medicine). Attention was focused on journal volumes published between 1920 and 1965. After reviewing the literature, we selected 12 keywords representing important advances in anesthesiology since 1920: "anesthesia," "balanced anesthesia," "barbiturates," "d-tubocurarine," "endotracheal intubation," "ether," "lidocaine," "morphine," "spinal anesthesia," "thiopental," "transfusion," and "trichloroethylene." Titles of original articles from all selected journals editions between 1920 and 1965 were screened for the occurrence of 1 of the 12 keywords. A total of 26,132 original article titles were screened for the occurrence of the keywords. A total of 1815 keywords were found. Whereas Anesthesia & Analgesia had the highest keyword occurrence (493 citations), Schmerz-Narkose-Anaesthesie had the lowest (38 citations). The number of publications of the 12 keywords was significantly higher in the postwar than in the prewar period (65% and 35%, respectively; P < .001). Not surprisingly, the anesthesiology journals have a higher occurrence of keywords than those journals covering other specialties. The overall occurrence of keywords also showed peaks during other major conflicts, namely the Spanish Civil War (1936-1939), the Korean War (1950-1953), and the Vietnam War (1955-1975). For the first time, this study demonstrates statistically the impact of WWII on the progress of anesthesiology. It also offers an objective record of the chronology of the major advances in anesthesiology before and after the conflict. While the war arguably helped to enhance anesthesiology as a specialty, in return anesthesiology helped to heal the wounds of war.
    DOI:  https://doi.org/10.1213/ANE.0000000000005745
  21. J Pharm Health Care Sci. 2021 Nov 01. 7(1): 38
       BACKGROUND: Pharmacist plays an integral role in promoting antimicrobial stewardship (AS) strategies by committing to the evidence-based activities in this field. The present study aims to document trends in actual achievements through bibliometric analysis and identify the future direction of pharmacists with expertise in AS by describing the characteristics of articles on AS written by Japanese pharmacists.
    METHODS: The study searched for articles written in Japanese and English on Ichushi-Web and MEDLINE, respectively, until December 2020 for published articles relevant to AS. The articles were classified into the seven groups according to content. Interrupted time series analysis (ITSA) was performed to identify the effect of the certification system for infection control pharmacy specialists (ICPSs) on the number of articles in Japanese.
    RESULTS: The study retrieved 476 and 145 titles from Ichushi-Web and MEDLINE, respectively, out of which 383 and 123 articles written in Japanese and English, respectively, were considered relevant to AS. A continued publication was found for Japanese articles written by pharmacists assigned to large-sized hospitals since 1998, whereas few articles in English were published until 2017. The most frequent content of articles in both languages was intervention (56.7 and 59.0%, respectively). ITSA indicated that the number of publication slightly increased before [β1 = 1.33, 95% confidence interval (CI): - 0.62-3.28; P = 0.169] the implementation of the system. Moreover, the level (β2 = 11.41, 95%CI: - 0.23-23.05; P = 0.054) increased after the implementation of the system, whereas the slope decreased (β3 = - 2.07, 95%CI: - 4.16-0.03; P = 0.053). However, the changes were not statistically significant.
    CONCLUSION: The study identified the contribution of pharmacists by documenting trends in AS practice and by conducting bibliometric analysis. The implementation of the ICPS certification system positively influenced the trend of publications. Therefore, the study recommends that policymakers and stakeholders should promote and support the evidence-based activities for AS for pharmacists in small- to medium-sized hospitals.
    Keywords:  Antimicrobial stewardship; Bibliometric analysis; Japan; Pharmacist
    DOI:  https://doi.org/10.1186/s40780-021-00223-w
  22. J Res Med Sci. 2021 ;26 54
       Background: The alarming trends of obesity/overweight in youth have been interested policy makers and other stakeholders to exact follow and analysis of related scientific evidence. The present paper quantify the trends of outputs of youth obesity/overweight researches in Middle East countries.
    Materials and Methods: The Scopus database systematically searched as the most comprehensive multidisciplinary database, for all related obesity/overweight that focused on youth age groups concerns, from 2000 to 2017. These scientometrics analysis included the trends of scientific products, citations, and other scientometric index in Middle East countries.
    Results: During 2000-2017, in the field of youth obesity, 2350 papers published (0.40% of total 591,105 indexed paper of this region) by Middle East countries. In this regard, Iran with 574 publication (24.43%) had the first rank. After that Turkey and Saudi Arabia, respectively, with 489 (20.81%) and 313 (13.32%) papers, had the next ranks. Over 18-year period, based on the findings all of Eastern Mediterranean countries follow the progressive plans for topics related to youth obesity. Between them, Iran and Turkey have significant growth rates (0.77% and 0.40%, respectively). Scientometric indicators such as "number of published papers," "number of citations" confirmed that during the 2000-2017 the P-trends of total number of related published papers and the correspond citations, in region countries, were significant (2168 papers and 34,132 citations, P < 0.001).
    Conclusion: Most of countries at global and regional levels follow ascending trends in publications and citations in obesity/overweight fields. Iran's position has grown significantly among them. Maintaining and promoting this position requires careful planning and special attention. The findings also could be used for better health policy and complementary researches.
    Keywords:  Body mass index; Iran; body weight; middle east; obesity; scientometrics; young adult; youth
    DOI:  https://doi.org/10.4103/jrms.JRMS_415_19
  23. Bull Environ Contam Toxicol. 2021 Nov 01.
      Antibiotic compounds can enter the environment and eventually into drinking water, when manure containing non-metabolized antibiotic residues is applied to agricultural land. In this study, the publication data was analyzed from the aspects of countries, subject categories and keywords during the period of 1946-2016 from Web of Science. The results indicated that, during the period of 2004-2016, the United States, followed by China, dominated the publication of antibiotics in soil. Three most representative subject categories were "Microbiology", "Environmental science and ecology" and "Chemistry". The most studied antibiotic was tetracycline. Antibiotic resistance bacteria (ARB) and antibiotic resistance genes (ARGs) with the fate and transport mechanisms such as degradation, adsorption and desorption were the hot research topics in this field. This study suggests that research on ARB, ARGs and antibiotics in soil should be paid more attention in the future research.
    Keywords:  Antibiotic; Hot research subject; International collaboration; Soil; Subject category
    DOI:  https://doi.org/10.1007/s00128-021-03395-1
  24. Trends Organ Crime. 2021 Oct 23. 1-23
      This article presents a review of organised crime authorship for all articles published in Trends in Organized Crime and Global Crime between 2004 and 2019 (N = 528 articles and 627 individual authors). The results of this review identify a field dominated by White men based in six countries, all in the Global North. Little collaboration occurs; few studies are funded, and few researchers specialise in the area. Organised crime research, however, does have a degree of variety in national origin, and therefore linguistic diversity, while the number of female researchers is growing. The article concludes that authorship trends are influenced by the challenges of data collection, funding availability, and more entrenched structural factors, which prevent some from entering into, and staying active within, the field.
    Keywords:  Authorship; Gender; Organised crime; Race; Research trends; Scholarship
    DOI:  https://doi.org/10.1007/s12117-021-09437-8
  25. Int J Yoga Therap. 2021 Nov 02.
      Yoga research citations from 1948 to 2020 in PubMed were filtered and sorted in 10-year intervals to explore the occurrence and time frame of change in (1) the focus of research; (2) the number of randomized controlled trials (RCTs), systematic reviews (SRs), and meta-analyses (MAs); (3) health conditions researched for yoga as therapy; (4) journals with yoga research; and (5) the research on yoga from different countries. Publications on yoga between 1948 and 1970 (1.25%) focused on exceptional abilities of experienced yoga practitioners, apparently related to the spiritual goal of yoga; from 1971 to 2000 (6.87%), the focus was on yoga in health and therapy; and from 2001 to 2020 (91.88%), research publications on yoga increased and continued to focus on health and therapy, with fewer RCTs relative to the SRs and MAs on yoga in PubMed. Publications on yoga reported the following health conditions most often: from 1981 to 1990, (1) asthma, (2) stress, and (3) diabetes; from 1991 to 2000, (1) stress followed by (2) asthma, anxiety, and pain (all three with equal percentages); from 2001 to 2010, (1) depression, (2) stress, and (3) anxiety; and from 2011 to 2020, (1) stress, (2) depression, and (3) pain. The journals publishing research on yoga in PubMed have changed between 1971 and 2020 as follows: highly clinically relevant, broad-interest medical journals (1971 to 1990); journals relevant to mind-body interventions (1991 to 2000); and specialized journals for complementary and alternative medicine, particular branches of medicine, or research study designs (2001 to 2020). The highest yoga research output from 1971 to 1980 came from the United Kingdom (RCTs); from 1981 to 1990 the most research came from the United States (RCTs); from 1991 to 2000 the most research came from India (RCTs) and the United Kingdom (SRs); from 2001 to 2010 the most research came from the United States (RCTs, SRs) and the United Kingdom (MAs); and from 2011 to 2020 the most research came from the United States (RCTs, SRs, MAs). The trends in yoga research from this analysis reflect increased research related to yoga and health while suggesting areas for future research based on the strengths and gaps that have emerged.
    Keywords:  global output; meta-analyses; randomized controlled trials; systematic reviews; therapeutic yoga research; yoga research
    DOI:  https://doi.org/10.17761/2021-D-21-00017
  26. Semin Ophthalmol. 2021 Nov 01. 1-7
       PURPOSE: To analyze trends in National Institutes of Health (NIH) funding in ophthalmology and characterize its distribution to departments and principal investigators (PIs) affiliated with U.S. medical schools.
    DESIGN: Longitudinal descriptive analysis.
    METHODS: We queried publically accessible data from the Blue Ridge Institute for Medical Research and NIH RePORTER to determine annual funding trends in ophthalmology from 2009 to 2020. To characterize the distribution of funding, we further ranked the top departments and principal investigators (PIs). Department websites (among other online resources) were utilized to extract characteristics of the latter cohort.
    RESULTS: After adjusting for inflation, we observed a modest 9% increase in median NIH funding to academic ophthalmology departments between 2009 and 2020. In the same time period, among individual PIs, this translated to a 9% decline in median funding. Our results among both departments and PIs indicated a persistent inequality in NIH funding. In 2020, 10 ophthalmology departments received 44% of total funding, which is consistent with findings from prior years. Our ranking of PIs by average annual NIH funding indicated a disproportionate representation of males (76%) and PhDs (58%) in the top 50.
    CONCLUSIONS: Overall, the results of this investigation suggest NIH funding remains limited for individual investigators, reflecting the increasingly competitive nature of the grant application process. Systemic alterations will be required to reverse these trends. If not accomplished, nascent and established researchers alike will continue to endure challenges in obtaining and maintaining funding.
    Keywords:  Blue Ridge Institute for Medical Research; NIH RePORTER; National Institutes of Health; clinician-scientist; inequities
    DOI:  https://doi.org/10.1080/08820538.2021.1998557
  27. Singapore Med J. 2021 Oct 31.
       INTRODUCTION: To examine how ageing research in medical and social domains in Singapore has transformed over time, this scoping review examined the number, types and characteristics of journal publications on ageing in Singapore from 2008 to 2018.
    METHODS: Using relevant search terms, articles were extracted from multiple databases and then screened and reviewed for eligibility and inclusion by independent reviewers. Data such as title of the study, authors, year of publication, name of journal, type of journal, study design and the kind of data used were charted from the included articles for evidence synthesis.
    RESULTS: Since 2008, there has been a steady increase in the number of publications on ageing in medical and social domains in Singapore. In the medical domain, publications in Ophthalmology formed the largest group of the existing medical literature on ageing in Singapore (22%), followed by Physical Functioning, which involved physiological measurements of physical well-being (17%) and Geriatrics (16%). Non-medical publications comprised 38% of all the included publications, with publications on the social aspects of ageing forming the largest group in this cluster (43%), followed by publications on Prevention (19%) and Healthcare Services (18%). Most studies were observational in study design (82%), with only 3% of interventional studies.
    CONCLUSION: While ageing research had expanded in Singapore in the last decade, it was predominantly discipline-specific and observational in design. As ageing issues are complex, with biology intersecting with psychology and sociology, we call for greater interdisciplinary collaboration, interventional studies and more research in understudied and emerging areas.
    Keywords:  Singapore; ageing research; scoping review
    DOI:  https://doi.org/10.11622/smedj.2021172
  28. PLoS One. 2021 ;16(11): e0257950
      As in many parts of the world, the management of environmental science research in Antarctica relies on cost-benefit analysis of negative environmental impact versus positive scientific gain. Several studies have examined the environmental impact of Antarctic field camps, but very little work looks at how the placement of these camps influences scientific research. In this study, we integrate bibliometrics, geospatial analysis, and historical research to understand the relationship between field camp placement and scientific production in the McMurdo Dry Valleys of East Antarctica. Our analysis of the scientific corpus from 1907-2016 shows that, on average, research sites have become less dispersed and closer to field camps over time. Scientific output does not necessarily correspond to the number of field camps, and constructing a field camp does not always lead to a subsequent increase in research in the local area. Our results underscore the need to consider the complex historical and spatial relationships between field camps and research sites in environmental management decision-making in Antarctica and other protected areas.
    DOI:  https://doi.org/10.1371/journal.pone.0257950
  29. Laryngoscope. 2021 Nov 02.
       BACKGROUND: Diversity within the medical profession with respect to sex and racial minorities has been shown to have a positive effect on health and healthcare. Characterization of a field is key to evaluating trends and the advancement of diversity in an otolaryngology subspecialty.
    STUDY DESIGN: Observational study.
    METHODS: A comprehensive list of all the academic laryngologists was compiled from the Accreditation Council for Graduate Medical Education accredited otolaryngology residency programs in 2020. The last 20 past presidents of the American Laryngological Association (ALA) and American Broncho-Esophogological Association (ABEA) were analyzed. Academic rank and years in practice were determined from departmental websites, with online search tools used as secondary resources. The h-index was utilized as a measure of research productivity. Regression analysis was performed to analyze these variables.
    RESULTS: There are 184 academic laryngologists in the 124 programs. The majority of the population is Caucasian 76.6% (141/184), followed by Asian 16.3% (30/184), African American 4.34% (8/184), and then Hispanic 1% (2/184). There are 47 full professors with 83% Caucasian, 14.1% Asian, and 2.1% African American and 91.5% male and only 8.5% female. Past ALA presidents were 90% male and for the ABEA 75% male. H-index revealed a statistically significant difference between Caucasian and African American colleagues [P value (<.0005)].
    CONCLUSIONS: Minorities are disproportionately underrepresented in laryngology. Women are less likely to be in leadership roles in laryngology and become full professors. Laryngology lags behind other surgical specialties in the representation of minorities and women. Continued efforts should be made to increase diversity in the field of laryngology, especially in regard to underrepresented minorities.
    LEVEL OF EVIDENCE: N/A Laryngoscope, 2021.
    Keywords:  Diversity in medicine; minority representation; otolaryngology; scopus
    DOI:  https://doi.org/10.1002/lary.29918
  30. Front Res Metr Anal. 2021 ;6 736687
      This article is a modest attempt to shed some light on the question of linkages between backward and forward citations in technical fields posed by Trajtenberg et al. (1997). They found interesting similarities and high correlations between equivalent measures looking forward and backward. They also implied the linkage between distant backward and distant forward citations. There are several questions to be posed in applying their insights to Japanese patent applications, however, due to the differences in the patent classification system and the subject of citation, i.e., citations by the applicant or examiner, between the US and Japan. In addition, and most importantly, the possibility that subsequent classifications may match, even if the first classification is different, is unavoidable with existing measurement methods of technical distance. In order to investigate these research questions, the author proposes a new measurement method for the technological proximity between examiner's citations and their originating patents using IPC-based patent classifications. Using such a proposed method, the author created two hypotheses and tested them for about 14,000 examined patent applications filed in 2008 with the JPO. As a result of testing Hypothesis I, the author confirmed that Trajtenberg et al.'s insights can be applied to Japanese patent applications using citations by the examiners and IPC-based patent classifications. In other words, it was confirmed that patent applications citing backward citations categorized in a technical field distant from the invention are more likely to be cited by forward citations categorized in a technical field distant from the invention. As a result of the verification of Hypothesis Ⅱ, it was further confirmed in some technical fields that the backward citations categorized in a technical field distant from the invention are more likely to be in the same technical field as the forward citations categorized in a technical field distant from the invention. The author believes that these verified results indicate the possibilities of using backward citations as a starting point from which we can find patent applications for inventions at an early stage with potential applicability to other technical fields.
    Keywords:  backward citation; distant knowledge; innovation study; patent analysis; technical field
    DOI:  https://doi.org/10.3389/frma.2021.736687
  31. J Dent Educ. 2021 Nov 06.
       PURPOSE/OBJECTIVES: The purpose of this study was to calculate the male to female dean ratio in the US dental schools, assess whether the dean's gender is affected by specific school characteristics (such as geographic location or class size), and determine whether the dean's gender affects the percent of women in the school leadership team.
    METHODS: Each US school's website was reviewed to capture the name and gender of each dean and others holding assistant, associate or vice dean positions. All data were entered in an Excel database (Microsoft Excel 2016) and analyzed using a statistical analysis software program (IBM SPSS Statistics, v26; IBM Corp). The level of significance was set to α = 0.05.
    RESULTS: The male to female dean ratio (approximately 5:1) differed significantly from the hypothesized ratio 1:1 (z = 5.22, p < 0.001). Mean class size (χ2  = 0.869, p = 0.351) and school funding source (χ2  = 0.430, p = 0.512) did not differ between schools with a male versus female dean. The percentage of women in the school's leadership team was higher in schools with a female dean (U = 151, p = 0.004).
    CONCLUSIONS: In the US dental schools, there is one female dean for every five deans who are male, indicating underrepresentation of women at the highest role in academic leadership. Schools with female deans tend to have more women in other administrative roles as well. Change is needed in order to promote equity, diversity, and inclusion in academic dentistry.
    Keywords:  dean; dentistry; diversity; equity; gender; inclusion
    DOI:  https://doi.org/10.1002/jdd.12816
  32. J Surg Res. 2021 Oct 31. pii: S0022-4804(21)00620-X. [Epub ahead of print]270 335-340
       BACKGROUND: The Blue Ridge Institute for Medical Research (BRIMR) reports a ranking of surgical department NIH funding each fiscal year based on more than 41,000 individual investigators. This report is used to measure the research productivity of the faculty or department. However, this method includes institutional grants awarded to Cancer Centers or Centers for Research, which do not reflect individual or departmental research. To measure the research productivity of a surgical department more directly, we created a modified BRIMR index excluding grants to cancer or research centers. We evaluated how our modified index of surgical departments compared to the rankings by BRIMR.
    METHODS: Publicly available BRIMR data was filtered for all grants awarded to principal investigators in a surgical department within a medical school. All funding for Cancer Centers or Centers for Research was excluded. The remaining grants were totaled, producing a new ranking of surgical departments.
    RESULTS: After excluding $42,761,752 in grants to Cancer Centers and Centers for Research, there was individual movement of 33 surgical departments on the ranking list. However, only four departments moved either up or down one quartile. No surgical department moved 2 or more quartiles.
    CONCLUSIONS: NIH funding for Cancer Centers and Centers for Research comprised 10% of all NIH funding for medical school-associated surgical departments. Exclusion of this funding resulted in no significant change within surgical department quartile rankings. This suggests the BRIMR measure of research productivity does not need modification.
    Keywords:  Medical school; NIH funding; Ranking; Surgery
    DOI:  https://doi.org/10.1016/j.jss.2021.09.036
  33. BMJ Open. 2021 Nov 02. 11(11): e050322
       OBJECTIVE: Many studies have analysed gender bias in academic medicine; however, no comprehensive synthesis of the literature has been performed. We conducted a pooled analysis of the difference in the proportion of men versus women with full professorship among academic physicians.
    DESIGN: Systematic review and meta-analysis.
    DATA SOURCES: MEDLINE, Embase, Cochrane Central Register of Controlled Trials, Education Resources Information Center and PsycINFO were searched from inception to 3 July 2020.
    STUDY SELECTION: All original studies reporting faculty rank stratified by gender worldwide were included.
    DATA EXTRACTION AND SYNTHESIS: Study screening, data extraction and quality assessment were performed by two independent reviewers, with a third author resolving discrepancies. Meta-analysis was conducted using random-effects models.
    RESULTS: Our search yielded 5897 articles. 218 studies were included with 991 207 academic physician data points. Men were 2.77 times more likely to be full professors (182 271/643 790 men vs 30 349/251 501 women, OR 2.77, 95% CI 2.57 to 2.98). Although men practised for longer (median 18 vs 12 years, p<0.00002), the gender gap remained after pooling seven studies that adjusted for factors including time in practice, specialty, publications, h-index, additional PhD and institution (adjusted OR 1.83, 95% CI 1.04 to 3.20). Meta-regression by data collection year demonstrated improvement over time (p=0.0011); however, subgroup analysis showed that gender disparities remain significant in the 2010-2020 decade (OR 2.63, 95% CI 2.48 to 2.80). The gender gap was present across all specialties and both within and outside of North America. Men published more papers (mean difference 17.2, 95% CI 14.7 to 19.7), earned higher salaries (mean difference $33 256, 95% CI $25 969 to $40 542) and were more likely to be departmental chairs (OR 2.61, 95% CI 2.19 to 3.12).
    CONCLUSIONS: Gender inequity in academic medicine exists across all specialties, geographical regions and multiple measures of success, including academic rank, publications, salary and leadership. Men are more likely than women to be full professors after controlling for experience, academic productivity and specialty. Although there has been some improvement over time, the gender disparity in faculty rank persists.
    PROSPERO REGISTRATION NUMBER: CRD42020197414.
    Keywords:  education & training (see medical education & training); general medicine (see internal medicine); health policy; human resource management; quality in healthcare
    DOI:  https://doi.org/10.1136/bmjopen-2021-050322