bims-evares Biomed News
on Evaluation of research
Issue of 2020‒08‒02
thirty-one papers selected by
Thomas Krichel
Open Library Society


  1. PLoS One. 2020 ;15(7): e0234612
    Ioannidis JPA, Cristea IA, Boyack KW.
      We aimed to assess whether Nobel prizes (widely considered the most prestigious award in science) are clustering in work done in a few specific disciplines. We mapped the key Nobel prize-related publication of each laureate awarded the Nobel Prize in Medicine, Physics, and Chemistry (1995-2017). These key papers mapped in only narrow sub-regions of a 91,726-cluster map of science created from 63 million Scopus-indexed published items. For each key Nobel paper, a median of 435 (range 0 to 88383) other Scopus-indexed items were published within one year and were more heavily cited than the Nobel paper. Of the 114 high-level domains that science can be divided into, only 36 have had a Nobel prize. Five of the 114 domains (particle physics [14%], cell biology [12.1%], atomic physics [10.9%], neuroscience [10.1%], molecular chemistry [5.3%]) have the lion's share, accounting in total for 52.4% of the Nobel prizes. Using a more granular classification with 849 sub-domains shows that only 71 of these sub-domains (8.3%) have at least one Nobel-related paper. Similar clustering was seen when we mapped all the 40,819 Scopus-indexed publications representing the career-long output of all the Nobel laureates. In conclusion, work resulting in Nobel prizes is concentrated in a small minority of scientific disciplines.
    DOI:  https://doi.org/10.1371/journal.pone.0234612
  2. J Assoc Inf Sci Technol. 2019 Feb;70(2): 198-201
    Leydesdorff L, Bornmann L, Wagner CS.
      A recent publication in Nature reports that public R&D funding is only weakly correlated with the citation impact of a nation's articles as measured by the field-weighted citation index (FWCI; defined by Scopus). On the basis of the supplementary data, we up-scaled the design using Web of Science data for the decade 2003-2013 and OECD funding data for the corresponding decade assuming a 2-year delay (2001-2011). Using negative binomial regression analysis, we found very small coefficients, but the effects of international collaboration are positive and statistically significant, whereas the effects of government funding are negative, an order of magnitude smaller, and statistically nonsignificant (in two of three analyses). In other words, international collaboration improves the impact of research articles, whereas more government funding tends to have a small adverse effect when comparing OECD countries.
    DOI:  https://doi.org/10.1002/asi.24109
  3. Phys Eng Sci Med. 2020 Jul 28.
    Trapp JV.
      In June 2020 Elsevier announced that the CiteScore metric of journals underwent a change. This work examines the effect of these changes for 40 journals, chosen from the top five and middle five (ranked by CiteScore) journals in the subject areas of General Physics and Astronomy, Materials Science, Medicine, Social Sciences) and compares to the Journal Impact Factor. It is shown that in the data studied here, the new methodology is less susceptible to influence of the proportion of editorial material in a journal, but tends to favour journals in research fields that publish articles which get cited more quickly.
    Keywords:  Bibliometrics; Citations; Citescore; Clarivate analytics; Jif; Journal based metric; Journal impact factor; Library and information services; Scientometrics; Scopus
    DOI:  https://doi.org/10.1007/s13246-020-00903-1
  4. Urology. 2020 Jul 23. pii: S0090-4295(20)30869-4. [Epub ahead of print]
    Cannon S, Ahn J, Shnorhavorian M, Kieran K, Merguerian P.
      OBJECTIVE: To evaluate the evolving role of gender in invited authorship and editorial positions in the Journal of Pediatric Urology.MATERIALS AND METHODS: We recorded editorial board members and first and senior authors for all editorials and invited commentaries for all issues of the Journal of Pediatric Urology from 2005 to August 2018. We also recorded first and senior authors for original research articles from selected years for comparison. Gender was confirmed for each individual by visiting institutional websites and performing internet searches. The same was done for the Societies for Pediatric Urology membership.
    RESULTS: A total of 143 editorials and 162 invited commentaries were identified within the study period, with numbers increasing each year. Overall, these publications had 448 first and senior authorships, of which 10% were female. Of the 898 editorial board positions over the study period, 7% were held by females. The proportion of female authorships increased over time (p = 0.04), while the proportion of female board members did not (p=0.9).
    CONCLUSIONS: Female invited authorship has increased over the past 13 years in the Journal of Pediatric Urology. However, editorial board membership has lagged, indicating an opportunity for improvement.
    Keywords:  Pediatric Urology; authorship; editorial boards; gender equality; workforce issues
    DOI:  https://doi.org/10.1016/j.urology.2020.05.097
  5. J Med Internet Res. 2020 Jul 26.
    Warin T.
      BACKGROUND: In these trying times, we developed an R package about bibliographic references on coronaviruses. Working with reproducible research principles based on open science, disseminating scientific information, providing easy access to scientific production on this particular issue and offering a rapid integration in researchers' workflows may help save time in this race against the virus, notably in terms of public health.OBJECTIVE: The goal is to simplify the workflow of interested researchers, with multi-disciplinary in mind. With more than 60,500 medical bibliographic references at the time of publication, this package is among the largest ones about coronaviruses. This package could be of interest to epidemiologists, researchers in scientometrics, biostatisticians, as well as data scientists broadly defined.
    METHODS: This package collects references from PubMed and organizes the data in a data frame. Then, we built functions to sort through this collection of references. Researchers can also integrate the data into their pipeline and implement them in R within their code libraries.
    RESULTS: We provide a short use case in this article based on a bibliometric analysis of the references made available by this package. Classification techniques can also be used to go through the large volume of references and allow researchers to save time on this part of their research. Network analysis can be used to filter the dataset. Text mining techniques can also help researchers calculate similarity indices and help them focus on the parts of the literature that are relevant for their research.
    CONCLUSIONS: This package aims at accelerating research on coronaviruses. Epidemiologists can integrate this package int their workflow. It is also possible to add a machine learning layer on top of this package to model the latest advances in research about coronaviruses as we update this package daily. It is also the only one of this size - to the best of our knowledge - to be built in the R language.
    CLINICALTRIAL:
    DOI:  https://doi.org/10.2196/19615
  6. JMIR Mhealth Uhealth. 2020 Jul 27. 8(7): e18212
    Peng C, He M, Cutrona SL, Kiefe CI, Liu F, Wang Z.
      BACKGROUND: Due to the widespread and unprecedented popularity of mobile phones, the use of digital medicine and mobile health apps has seen significant growth. Mobile health apps have tremendous potential for monitoring and treating diseases, improving patient care, and promoting health.OBJECTIVE: This paper aims to explore research trends, coauthorship networks, and the research hot spots of mobile health app research.
    METHODS: Publications related to mobile health apps were retrieved and extracted from the Web of Science database with no language restrictions. Bibliographic Item Co-Occurrence Matrix Builder was employed to extract bibliographic information (publication year and journal source) and perform a descriptive analysis. We then used the VOSviewer (Leiden University) tool to construct and visualize the co-occurrence networks of researchers, research institutions, countries/regions, citations, and keywords.
    RESULTS: We retrieved 2802 research papers on mobile health apps published from 2000 to 2019. The number of annual publications increased over the past 19 years. JMIR mHealth and uHealth (323/2802, 11.53%), Journal of Medical Internet Research (106/2802, 3.78%), and JMIR Research Protocols (82/2802, 2.93%) were the most common journals for these publications. The United States (1186/2802, 42.33%), England (235/2802, 8.39%), Australia (215/2802, 7.67%), and Canada (112/2802, 4.00%) were the most productive countries of origin. The University of California San Francisco, the University of Washington, and the University of Toronto were the most productive institutions. As for the authors' contributions, Schnall R, Kuhn E, Lopez-Coronado M, and Kim J were the most active researchers. The co-occurrence cluster analysis of the top 100 keywords forms 5 clusters: (1) the technology and system development of mobile health apps; (2) mobile health apps for mental health; (3) mobile health apps in telemedicine, chronic disease, and medication adherence management; (4) mobile health apps in health behavior and health promotion; and (5) mobile health apps in disease prevention via the internet.
    CONCLUSIONS: We summarize the recent advances in mobile health app research and shed light on their research frontier, trends, and hot topics through bibliometric analysis and network visualization. These findings may provide valuable guidance on future research directions and perspectives in this rapidly developing field.
    Keywords:  VOSviewer; bibliometrics; co-word analysis; digital health; digital medicine; mhealth; mobile app; mobile health; mobile phone
    DOI:  https://doi.org/10.2196/18212
  7. Elife. 2020 Jul 27. pii: e58496. [Epub ahead of print]9
    Abdill RJ, Adamowicz EM, Blekhman R.
      Preprints are becoming well established in the life sciences, but relatively little is known about the demographics of the researchers who post preprints and those who do not, or about the collaborations between preprint authors. Here, based on an analysis of 67,885 preprints posted on bioRxiv, we find that some countries, notably the United States and the United Kingdom, are overrepresented on bioRxiv relative to their overall scientific output, while other countries (including China, Russia, and Turkey) show lower levels of bioRxiv adoption. We also describe a set of 'contributor countries' (including Uganda, Croatia and Thailand): researchers from these countries appear almost exclusively as non-senior authors on international collaborations. Lastly, we find multiple journals that publish a disproportionate number of preprints from some countries, a dynamic that almost always benefits manuscripts from the US.
    Keywords:  bibliometrics; bioRxiv; computational biology; meta-research; none; preprints; scientific publishing; systems biology
    DOI:  https://doi.org/10.7554/eLife.58496
  8. West J Emerg Med. 2020 Jul 02. 21(4): 877-882
    Rodriguez RM, Chan V, Wong AHK, Montoy JCC.
      INTRODUCTION: A crucial, yet subjective and non-evidence-based, decision for researchers is where to submit their original research manuscripts. The approach of submitting to journals in descending order of impact factor (IF) is a common but imperfect strategy. The validity of the IF as a measure of journal quality and significance is suspect, and a number of other journal impact scores have emerged, such that no one scale is universally accepted. Furthermore, practical considerations, such as likelihood of manuscript acceptance rates and times for decisions, may influence how authors prioritize journals. In this report, we sought to 1) review emergency medicine (EM) journal impact metrics, and 2) provide a comprehensive list of pertinent journal characteristics that may influence researchers' choice of submission.METHODS: We systematically reviewed five impact metrics (IF, H Index, CiteScore, Source-Normalized Impact per Paper, and SCImago Journal Rank) and other relevant characteristics of 20 EM journals.
    RESULTS: We found good to excellent agreement in ordinal rankings of four of the journal impact metrics, as measured by the Spearman rank correlation coefficient. The median acceptance rate for original research manuscripts in the EM category was 25% (interquartile range [IQR] 18, 31%), and the median initial decision time was 33 days (IQR 18, 56 days). Fourteen EM journals (70%) accepted brief reports, and 15 (75%) accepted case reports/images.
    CONCLUSION: We recommend replication, expansion, and formalization of this repository of information for EM investigators in a continuously updated, open-access forum sponsored by an independent organization.
    DOI:  https://doi.org/10.5811/westjem.2020.4.47030
  9. J Clin Epidemiol. 2020 Jul 23. pii: S0895-4356(19)31108-4. [Epub ahead of print]
    Caulley L, Cheng W, Catalá-López F, Whelan J, Khoury M, Ferraro J, Husereau D, Altman DG, Moher D.
      OBJECTIVE: Over 400 reporting guidelines are currently published, but the frequency of their use by authors to accurately and transparently report research remains unclear. This study examined citation counts of reporting guidelines and characteristics contributing to their citation impact.STUDY DESIGN AND SETTING: Web of Science database was searched for citation counts of all reporting guidelines with a minimum citation age of 5 years. The total citation impact, mean citation impact and the factors contributing to 2-year and 5-year citation rate were established.
    RESULTS: The search identified 296 articles of reporting guidelines from 1995 to 2013. The mean citations per year was 32.4 (95% confidence interval, 22.3 - 42.4 citations). The factors associated with 2-year and 5-year citation performance of reporting guidelines included: open access to the reporting guideline, field of the publishing journal (general versus specialised medical journal), impact factor of the publishing journal, simultaneous publication in multiple journals, and male first author.
    CONCLUSIONS: and Relevance: The citation rate across reporting guidelines varied with journal impact factor, open access publication, field of the publishing journal, simultaneous publications, and a male first author. Gaps in citations highlights opportunities to increase visibility and encourage author use of reporting guidelines.
    Keywords:  citation analysis; citation impact; clinical trials; quality of reporting; reporting guidelines; standardized reporting
    DOI:  https://doi.org/10.1016/j.jclinepi.2020.07.013
  10. Heliyon. 2020 Jul;6(7): e04452
    David TM, Silva Rocha Rizol PM, Guerreiro Machado MA, Buccieri GP.
      Using the Scopus database between the years of 2000 and 2019, a bibliometric study was done to analyze the scientific publications in the area of photovoltaic solar energy management. From the preliminary analysis of future research tendencies, ten possibilities of study topics were developed; and due to that it was possible to assume that even though many studies of technological development are found, some insights can still be approached in a way that the practical implementation of solar systems photovoltaic is better used. This data was validated by the analysis performed with the Scimat scientific mapping software under a longitudinal structure, verifying the future tendencies researches mentioned previously.
    Keywords:  Bibliometry; Energy; Energy management; Green engineering; Photovoltaic solar energy; Solar energy; Sustainable development
    DOI:  https://doi.org/10.1016/j.heliyon.2020.e04452
  11. PLoS One. 2020 ;15(7): e0235190
    Bennett CL, Salinas RY, Locascio JJ, Boyer EW.
      To examine changes in U.S. medical school basic science faculty over the last 20 years (1998-2018), we undertook an observational study utilizing data from the American Association of Medical Colleges Faculty Roster. Rank (Instructor, Assistant Professor, Associate Professor, and Professor), sex (Female), and race/ethnicity (Asian, Black or African American, Hispanic, Latino, Spanish Origin, or Multiple Race-Hispanic, and White) were analyzed; this reflected a population of 14,047 (1998) to 18,601 (2018) faculty. Summary percent of faculty in various gender, race/ethnicity origin categories were analyzed across years of the study using regression models. We found that females (24.47% to 35.32%) were underrepresented at all timepoints and a minority of faculty identified as Black or African American (1.57% to 1.99%), Hispanic, Latino, Spanish Origin, or Multiple Race-Hispanic (3.03% to 4.44%), or Asian (10.90% to 20.41%). The largest population at all time points was White Male Professors (30.53% to 20.85%), followed by White Male Associate Professors (15.67% to 9.34%), and White Male Assistant Professors (13.22% to 9.75%). Small statistically significant increases were observed among female faculty and faculty at multiple ranks who identified as Black or African American or Hispanic, Latino, Spanish Origin, or Multiple Race-Hispanic. We then completed secondary analyses looking at the interaction of race/ethnicity and Gender. We found: (1) a significant increase (p<0.0001) in both genders who identify as Asian although males had a higher rate of increase (6 point difference, p<0.0001); (2) a significant increase for Black or African American females (P<0.01) not found among males; (3) significant increases (p<0.0001) among both genders of faculty who identify as Hispanic, Latino, Spanish Origin, or Multiple Race-Hispanic although females had an approximately 1% higher rate of increase; and (4) among faculty who identify as White, males had a significant decrease (p<0.0001) while females demonstrated an increase (p<0.0001).
    DOI:  https://doi.org/10.1371/journal.pone.0235190
  12. BMC Med Educ. 2020 Jul 28. 20(1): 238
    Cullen MW, Klarich KW, Oxentenko AS, Halvorsen AJ, Beckman TJ.
      BACKGROUND: The unique traits of residents who matriculate into subspecialty fellowships are poorly understood. We sought to identify characteristics of internal medicine (IM) residents who match into cardiovascular (CV) fellowships.METHODS: We conducted a retrospective cohort study of 8 classes of IM residents who matriculated into residency from 2007 to 2014. The primary outcome was successful match to a CV fellowship within 1 year of completing IM residency. Independent variables included residents' licensing exam scores, research publications, medical school reputation, Alpha Omega Alpha (AOA) membership, declaration of intent to pursue CV in the residency application personal statement, clinical evaluation scores, mini-clinical evaluation exercise scores, in-training examination (ITE) performance, and exposure to CV during residency.
    RESULTS: Of the 339 included residents (59% male; mean age 27) from 120 medical schools, 73 (22%) matched to CV fellowship. At the time of residency application, 104 (31%) had ≥1 publication, 38 (11%) declared intention to pursue CV in their residency application personal statement, and 104 (31%) were members of AOA. Prior to fellowship application, 111 (33%) completed a CV elective rotation. At the completion of residency training, 108 (32%) had ≥3 publications. In an adjusted logistic regression analysis, declaration of intention to pursue CV (OR 6.4, 99% CI 1.7-23.4; p < 0.001), completion of a CV elective (OR 7.3, 99% CI 2.8-19.0; p < 0.001), score on the CV portion of the PGY-2 ITE (OR 1.05, 99% CI 1.02-1.08; p < 0.001), and publication of ≥3 manuscripts (OR 4.7, 99% CI 1.1-20.5; p = 0.007) were positively associated with matching to a CV fellowship. Overall PGY-2 ITE score was negatively associated (OR 0.93, 99% CI 0.90-0.97; p < 0.001) with matching to a CV fellowship.
    CONCLUSIONS: Residents' matriculation into CV fellowships was associated with declaration of CV career intent, completion of a CV elective rotation, CV medical knowledge, and research publications during residency. These findings may be useful when advising residents about pursuing careers in CV. They may also help residents understand factors associated with a successful match to a CV fellowship. The negative association between matching into CV fellowship and overall ITE score may indicate excessive subspecialty focus during IM residency.
    Keywords:  Cardiology fellowship; Cardiovascular diseases; Career choice; Graduate medical education; Internal medicine residency; Sub-specialty fellowship
    DOI:  https://doi.org/10.1186/s12909-020-02154-w
  13. Health Qual Life Outcomes. 2020 Jul 29. 18(1): 254
    Tran BX, Nghiem S, Afoakwah C, Ha GH, Doan LP, Nguyen TP, Le TT, Latkin CA, Ho CSH, Ho RCM.
      BACKGROUND: Cardiovascular diseases (CVDs) have been the global health problems that cause a substantial burden for the patients and the society. Assessing the Quality of Life (QOL) of CVD patients is critical in the effectiveness evaluation of CVD treatments as well as in determining potential areas for enhancing health outcomes. Through the adoption of a combination of bibliometric approach and content analysis, publications trend and the common topics regarding interventions to improve QOL of CVD patients were searched and characterized to inform priority setting and policy development.METHODS: Bibliographic data of publications published from 1990 to 2018 on interventions to improve QOL of CVD patients were retrieved from Web of Science. Network graphs illustrating the terms co-occurrence clusters were created by VOSviewer software. Latent Dirichlet Allocation approach was adopted to classify papers into major research topics.
    RESULTS: A total of 6457 papers was analyzed. We found a substantial increase in the number of publications, citations, and the number of download times of papers in the last 5 years. There has been a rise in the number of papers related to intervention to increase quality of life among patients with CVD during 1990-2018. Conventional therapies (surgery and medication), and psychological, behavioral interventions were common research topics. Meanwhile, the number of papers evaluating economic effectiveness has not been as high as that of other topics.
    CONCLUSIONS: The research areas among the scientific studies emphasized the importance of interdisciplinary and inter-sectoral approaches in both evaluation and intervention. Future research should be a focus on economic evaluation of intervention as well as interventions to reduce mental issues among people with CVD.
    Keywords:  CVD; Content analysis; Global; Interventions; Mapping; QOL; Scientometrics; Text mining
    DOI:  https://doi.org/10.1186/s12955-020-01507-9
  14. Philos Ethics Humanit Med. 2020 Jul 28. 15(1): 5
    Hazrati H, Bigdeli S, Gavgani VZ, Soltani Arabshahi SK, Behshid M, Sohrabi Z.
      BACKGROUND: Medical education is currently more considerate about the human dimension. The present qualitative study aimed to explain the experiences of clinical professors with regard to humanism in clinical education in Iran.METHODS: This mixed methods study had two phases, a quanitative phase of scientometrics and a qualitative phase of a content analysis. In the scientometrics phase, Ravar PreMap and VOSviewer software programs were utilized for plotting the conceptual networks. The networks were analyzed at the micro-level based on centrality indices (closeness, degree, and betweenness). The conceptual network was plotted and the prominent topics in clinical education were identified using co-word analysis. In the second qualitative phase on the topic, based on the scientometrics phase, semi-structured interviews were conducted with clinical professors. The interviews were transcribed verbatim and analyzed.
    RESULTS: On the basis of the analysis of titles, abstracts, and keywords of the retrieved articles on clinical education from ISI Web of Science, Scopus, and PubMed, 1412 keywords were extracted. After the refining process, 356 keywords with 6741 relations remained. Upon plotting the conceptual network, 19 conceptual clusters related to clinical education were obtained. Then, micro-level network analysis (centrality criteria) indicated that the keyword humanism with the frequency of 137 had the highest rate (97.753), closeness (97.802), and betweenness (13.407). Moreover, from the interview data analysis, two themes of "intertwined nature of the human spirit in clinical education" and "humanistic behavior of professors in clinical education" were extracted.
    CONCLUSION: As a part of the educational culture, humanistic values must be intertwined with the medical education curriculum. In this regard, humanism and clinical reasoning are the two major clusters of clinical teaching; moreover, altruism and adherence to humanistic values, and scientific qualification are other main pillars that should be considered as the criteria for the selection of clinical professors and medical students.
    Keywords:  Clinical professor; Humanism; Qualitative study; Scientometrics
    DOI:  https://doi.org/10.1186/s13010-020-00088-1
  15. Int J Environ Res Public Health. 2020 Jul 24. pii: E5352. [Epub ahead of print]17(15):
    Martinez-Perez C, Alvarez-Peregrina C, Villa-Collar C, Sánchez-Tena MÁ.
      Background: In recent years, due to its complexity and relevance, academic performance has become a controversial research topic within the health and educational field. The main purposes of this study were to analyze the links between publications and authors via citation networks, to identify the different research areas and to determine the most cited publications. Methods: The publication search was performed through the Web of Science database, using the term "Academic Performance" for a time interval from 1952 to 2019. The software used to analyze the publications was the Citation Network Explorer. Results: We found a total of 16,157 publications with 35,213 citations generated in the network, and 2018 had the highest number of publications of any year. The most cited publication was published in 2012 by Richardson et al. with a citation index score of 352. By using the clustering function, we found nine groups related to different areas of research in this field: health, psychology, psychosociology, demography, physical activity, sleep patterns, vision, economy, and delinquency. Conclusions: The citation network showed the main publications dealing with the different factors that affect academic performance, and it was determined that psychological and psychosocial factors were the most relevant.
    Keywords:  academic performance; citation network; motivation
    DOI:  https://doi.org/10.3390/ijerph17155352
  16. Am J Surg. 2020 Jul 01. pii: S0002-9610(20)30397-4. [Epub ahead of print]
    Shaikh S, Emamaullee J, Lal G, Rodriguez L, Hughes M, Tatebe LC, .
      BACKGROUND: The impact of the Association of Women Surgeons (AWS) Research Grant on academic productivity is unknown.METHODS: Grant applications were obtained from AWS archives. Applicant bibliometrics and National Institutes of Health (NIH) grants were identified via public databases.
    RESULTS: Twenty-four recipients between 1996 and 2020 and 68 nonrecipients between 2012 and 2017 were identified. $596,700 was awarded over the 25 years. Twenty-five percent of recipients subsequently acquired NIH funding amounting to $6,611,927.00, an 885-1008% return on investment. Compared to nonrecipients, grant recipients produced a greater mean number of publications (50.6 versus 36.4; p = 0.05), had a higher h-index (15.92 versus 10.7; p = 0.01), and were cited in higher impact factor journals (6.32 versus 3.9; p = 0.02).
    CONCLUSIONS: Overall, previous AWS Research Grant recipients were more likely to become more impactful surgeon-scientists, as indicated by a higher post-award rate of NIH funding, total number of publications, and h-index than nonrecipients.
    Keywords:  Academic productivity; Grant funding; Women surgeons
    DOI:  https://doi.org/10.1016/j.amjsurg.2020.06.067
  17. Laryngoscope. 2020 Jul 30.
    Hill RG, Boeckermann LM, Huwyler C, Jiang N.
      OBJECTIVES: To determine the representation of women in leadership positions within otolaryngology societies and to compare their academic rank and research productivity to men.METHODS: The leadership positions of all U.S. otolaryngology societies were compiled. The Medicare Physician Compare database was used to obtain gender and medical school graduation year for all otolaryngologists. An online search was used to determine board member's academic faculty rank. The Scopus database was used to determine an individual's number of publications, citations, and h-index. All websites were accessed from July 2019 to October 2019.
    RESULTS: Of the 200 leadership positions, there were 160 unique individuals available for analysis. Of those, 23% were female. In comparison, 18% of all otolaryngologists in the United States are female. The average medical school graduation year was significantly more recent for female leaders (1997 vs. 1990, P < .001) than males, which is similar to all otolaryngologists (2001 vs. 1993, P < .001). Stratifying by gender alone, women averaged significantly fewer publications, citations, and h-indices compared to men (P < .05), and were also less likely to be professors (P < .01). When considering both gender and graduation year, significant differences among academic productivity were only noted for those graduating between 1990 to 1999. Among all board members who graduated after 2000, women comprised a majority of those in leadership positions (52%).
    CONCLUSION: Leadership positions in otolaryngology societies reflect the changing demographic of otolaryngologists in the United States. There is proportionate representation, and the more recently graduated female physicians show the same research productivity as their male counterparts.
    LEVEL OF EVIDENCE: 4 Laryngoscope, 2020.
    Keywords:  Gender, differences, women, leadership, society, board members, ENT, otolaryngology, h-index
    DOI:  https://doi.org/10.1002/lary.28958
  18. J Med Internet Res. 2020 Jul 29. 22(7): e18228
    Guo Y, Hao Z, Zhao S, Gong J, Yang F.
      BACKGROUND: As a critical driving power to promote health care, the health care-related artificial intelligence (AI) literature is growing rapidly.OBJECTIVE: The purpose of this analysis is to provide a dynamic and longitudinal bibliometric analysis of health care-related AI publications.
    METHODS: The Web of Science (Clarivate PLC) was searched to retrieve all existing and highly cited AI-related health care research papers published in English up to December 2019. Based on bibliometric indicators, a search strategy was developed to screen the title for eligibility, using the abstract and full text where needed. The growth rate of publications, characteristics of research activities, publication patterns, and research hotspot tendencies were computed using the HistCite software.
    RESULTS: The search identified 5235 hits, of which 1473 publications were included in the analyses. Publication output increased an average of 17.02% per year since 1995, but the growth rate of research papers significantly increased to 45.15% from 2014 to 2019. The major health problems studied in AI research are cancer, depression, Alzheimer disease, heart failure, and diabetes. Artificial neural networks, support vector machines, and convolutional neural networks have the highest impact on health care. Nucleosides, convolutional neural networks, and tumor markers have remained research hotspots through 2019.
    CONCLUSIONS: This analysis provides a comprehensive overview of the AI-related research conducted in the field of health care, which helps researchers, policy makers, and practitioners better understand the development of health care-related AI research and possible practice implications. Future AI research should be dedicated to filling in the gaps between AI health care research and clinical applications.
    Keywords:  artificial intelligence; bibliometric analysis; health care; machine learning; neural networks; telehealth
    DOI:  https://doi.org/10.2196/18228
  19. Asia Ocean J Nucl Med Biol. 2020 ;8(2): 123-131
    Pinson JA.
      Objectives: The aims of this study were to: 1) discover location (by city) of contributors to poster and oral presentations at recent ANZSNM conferences; 2) determine the nuclear medicine themes most commonly explored; 3) establish institutions producing the highest number of oral and poster abstracts and 4) determine publication rates of conference abstracts to full papers from recent ANZSNM conferences.Methods: Retrospective analysis of abstracts published in the Internal Medicine Journal Special Issues 2014-2019 identified 614 abstracts. Invited plenary speaker abstracts were excluded. Descriptive statistics were used in data analysis. Conference abstracts were analysed using the following criteria: poster or oral presentation, author/s, city location, hospital and subject matter. Themes defined by the ANZSNM conference committee for abstract submission were: cardiology, oncology, neurology, therapy, renal/urology, gastrointestinal, paediatrics, musculoskeletal, infection/inflammation, technology, physics, radiation safety, radiopharmacy/radiochemistry, education, or general. Retrospective analysis of 555 conference abstracts (excluding New Zealand and International, 59 abstracts) using Google Scholar, Pubmed and Google databases was undertaken. Abstract titles, key words, institutions and/or authors' names were used to find peer-reviewed papers. Identified papers were authenticated through either open access, publicly available author information or Monash University's library access. Published paper citations were also recorded (up to 1st July 2019).
    Results: Analysis of 614 abstracts 2014 - 2019 was performed. Over five years, the average number of poster abstracts was 67.8 and oral 55.0. Sydney submitted the highest number of poster abstracts, while Melbourne the highest number of oral abstracts. Most popular abstract theme was oncology for both poster and oral abstracts. Publications found had in excess of 1250 citations.One hundred and one publications from one hundred and seven conference presentations were identified, distributed across sixty journals. Conference presentation to full publication rate was 18.2%; excluding 2019 conference abstracts the rate was 21.5%.
    Conclusion: Publishing research findings is a challenging process. A retrospective analysis of research presented at recent ANZSNM conferences by abstract content was undertaken, with conference presentation to full publication rate found to be at the lower end of reported literature findings.
    Keywords:  ANZSNM; Conference abstract; Publication rate
    DOI:  https://doi.org/10.22038/AOJNMB.2020.44525.1300
  20. Clin Oral Implants Res. 2020 Jul 30.
    Wu X, Hu Q, Yan Q, Zhang T, Riley P, Hua F, Shi B, Tu YK.
      OBJECTIVES: To present the characteristics and level of evidence (LOE) of clinical studies published in leading oral implantology journals during 2008-2018, and to explore whether the LOE of a study is associated with its scientific and social impact.MATERIALS AND METHODS: Clinical studies with direct relevance to the evaluation of healthcare interventions published in 2008, 2013 and 2018 in six oral implantology journals were identified via hand searches. A modified 4-level Oxford 2011 LOE tool was used to assess the LOE of all eligible studies. The citation count and Altmetric Attention Score (AAS) of each study was extracted from Web of Science and Altmetric Explorer, respectively. Thereafter, multivariable generalized estimation equation analyses were used to investigate the association between LOE, citation counts and AAS, adjusting for potential confounding factors and clustering effects.
    RESULTS: A total of 763 clinical studies were included, among which the proportion of level-1, level-2, level-3 and level-4 studies was 2.4%, 30.4%, 40.2% and 27.0%, respectively. During 2008-2018, the proportion of high LOE studies (level-1 and level-2) increased substantially from 24.6% to 43.1%, although the number of systematic reviews that only include randomized controlled trials has remained limited. According to multivariable analyses, the citation count (p=0.002) and AAS (p=0.005) of high LOE studies were both significantly greater than those of low LOE studies.
    CONCLUSIONS: During the past decade, the proportion of high LOE studies has increased substantially in the field of oral implantology. Clinical studies with higher LOE tend to have greater scientific and social impact.
    Keywords:  Altmetrics; Bibliometrics; Clinical studies as topic; Evidence-based dentistry; Level of evidence; Oral implantology
    DOI:  https://doi.org/10.1111/clr.13641
  21. Molecules. 2020 Jul 28. pii: E3406. [Epub ahead of print]25(15):
    Silva SC, Ferreira ICFR, Dias MM, Barreiro MF.
      Microalgae productive chains are gaining importance as sustainable alternatives to obtain natural pigments. This work presents a review on the most promising pigments and microalgal sources by gathering trends from a 10-year bibliometric survey, a patents search, and an industrial and market analysis built from available market reports, projects and companies' webpages. The performed analysis pointed out chlorophylls, phycocyanin, astaxanthin, and β-carotene as the most relevant pigments, and Chlorella vulgaris, Spirulina platensis, Haematococcus pluvialis, and Dunaliella salina, respectively, as the most studied sources. Haematococcus is referred in the highest number of patents, corroborating a high technological interest in this microalga. The biorefinery concept, investment in projects and companies related to microalgae cultivation and/or pigment extraction is increasingly growing, particularly, for phycocyanin from Spirulina platensis. These pieces of evidence are a step forward to consolidate the microalgal pigments market, which is expected to grow in the coming years, increasing the prospects of replacing synthetic pigments by natural counterparts.
    Keywords:  astaxanthin; biorefinery; chlorophylls; market trends; microalgae biotechnology; microalgal pigments; phycocyanin; sustainable productive chains; β-carotene
    DOI:  https://doi.org/10.3390/molecules25153406
  22. PLoS One. 2020 ;15(7): e0236567
    Dai L, Zhang N, Rong L, Ouyang YQ.
      OBJECTIVE: To review the research on fear of childbirth, analyze and evaluate the publications by means of bibliometric analysis, and provide suggestions and scopes for future study.DATA SOURCES: Web of Science, PubMed, Embase and the Cochrane Library databases.
    STUDY SELECTION: All published articles focusing on the fear of childbirth from inception to February 10, 2020.
    DATA EXTRACTION: A total of 743 articles were included for final analysis. Bibliographic data were exported from databases and then cleaned manually before using Microsoft Excel and VOSviewer to analyze and visualize the findings.
    DATA SYNTHESIS: It was found that 743 articles have been cited 31515 times (h-index: 98). The volume of publications increased by 29.3 times in the past two decades. Across the globe, Sweden was the most prolific country having 129 articles (17.4%) with six of its institutions in the top ten most prolific institutions in the world. Fifty-two (7.8%) documents were published in Midwifery journal. The most prolific author was Hildingsson, who published 35 articles (4.7%). "Cesarean section," "experience," and "factor" were the words that appeared most frequently in titles and abstracts of studies. "Point prevalence of psychiatric disorders during the second trimester of pregnancy: A population-based study" was the most cited article and received 525 citations.
    CONCLUSION: There is an increasing interest in the research in fear of childbirth during the past two decades. This study has demonstrated that the Swedish authors have a leading role on this topic. Researchers especially in countries with high birth rates, need to promote research projects in this field as it is an important public health issue.
    DOI:  https://doi.org/10.1371/journal.pone.0236567
  23. Am J Surg. 2020 Jul 16. pii: S0002-9610(20)30440-2. [Epub ahead of print]
    Comish PB, Madni TD, Nakonezny PA, Mayo H, Imran JB, Kuhlenschmidt KM, Taveras LR, Vela RJ, Goldenmerry YL, Clark AT, Weis HB, Cripps MW, Wolf SE.
      
    Keywords:  Bibliometric Analysis; Education; Surgical Publications; Surgical Trends
    DOI:  https://doi.org/10.1016/j.amjsurg.2020.07.011
  24. Cad Saude Publica. 2020 ;pii: S0102-311X2020000702002. [Epub ahead of print]36(7): e00231819
    Depallens MA, Guimarães JMM, Almeida Filho N.
      According to the World Organization of Family Doctors (WONCA), quaternary prevention (P4) is a recent concept that aims to prevent medical overuse. Thus, this study aimed to measure and map research output on P4 as outline research trends, evaluating its current international status through a bibliometric and descriptive content analysis. We reviewed scientific articles on P4 recorded in PubMed, LILACS, SciELO or CINAHL with the outcomes: publication year, first authors' name and nationality, journals' name, country and ranking, publication language, used methods and main reported subjects. The analysis included 65 articles published in 33 journals of 16 countries between 2003 and 2018 with a peak of publications in 2015. The first authors came from 17 different countries, 23% Brazilian, with Uruguay as the leading nation in scientific production per capita. Q1 or Q2 journals amassed 28% of published papers. Bibliographic research comprised 88% of articles and 38% of all focused on specific examples of medical overuse. P4 represents an ethical and valid approach to prevent iatrogenic events and achieve equal and fair access to health services. Conceptual, geographical, and linguistic elements, as well as WONCA conferences and type of healthcare systems in the authors' country were fundamental factors that affected research output. The available studies are still of limited quality and quantity, with further investigations needed to assess the effective impact of P4 on public health.
    DOI:  https://doi.org/10.1590/0102-311x00231819
  25. Therap Adv Gastroenterol. 2020 ;13 1756284820941153
    Soffer S, Klang E, Tau N, Zemet R, Ben-Horin S, Barash Y, Kopylov U.
      Background: There is a growing research effort in the field of colorectal cancer (CRC) screening, with varying topics and shifting research foci over the years. The aim of this study was to apply a text-mining technique to evaluate trends in publications for CRC screening in the last 25 years.Methods: We retrieved MEDLINE/PubMed datasets from 1992-2017. We selected keywords from Medical Subject Headings to include CRC screening related publications. For each article, we extracted the following data: title, journal, publication date, abstract, article type, citation frequency, and country of origin. Articles were categorized into topics using word combination and title match technique.
    Results: In 1992-2017, 14,119 CRC screening related papers were published. The US had the highest number of papers (n = 4824) and China had the highest growth rate in publications. Overall, the most researched topic was "screening and surveillance programs" (38%). The topics of "quality assurance" (r = 0.87) and "racial disparities" (r = 0.91) have gained increased research attention over the years. In total, 11 of the 20 most cited articles in the field were published in The New England Journal of Medicine.
    Conclusion: The number of publications devoted to CRC screening has grown, with high-quality research reaching top-tier journals. A surge in the number of publications has been increasing in countries previously less involved in research in the field. Screening programs remain the most researched topic, and quality indicators is attracting a growing attention. Text-mining analysis of CRC screening research contributes to an understanding of publication trends and topics and can point to the need for potential future investigations.
    Keywords:  cancer screening; colorectal cancer; text mining
    DOI:  https://doi.org/10.1177/1756284820941153
  26. Global Health. 2020 Jul 28. 16(1): 68
    Sweileh WM.
      BACKGROUND: Global progress in the United Nations' Sustainable Development Goals (SDGs) requires significant national and international research efforts and collaboration. The current study aimed to provide policymakers, academics, and researchers with a snapshot of global SDGs-related research activity.METHOD: This was a cross-sectional descriptive bibliometric study. SciVerse Scopus was used to retrieve SDGs-related research publications for the period from 2015 to 2019.
    RESULTS: In total, 18,696 documents were found. The Sustainability journal ranked first (n = 1008; 5.4%) in the number of SDGs-related publications. The World Health Organization was the most active institution in publishing SDGs-related documents (n = 581; 1.3%). Most of the retrieved documents belonged to SDG 17 (partnership) followed by SDG 13 (climate action), and SDG 12 (responsible consumption and production), while SDG 7 (affordable and clean energy) had the least number of publications. The European region (n = 9756; 52.2%) had the highest research contribution while the Eastern Mediterranean region (n = 1052; 5.6%) had the least contribution. After exclusion of SDG 17, the SDG 3 (good health and well-being) was the top researched SDG for the African region, the Eastern Mediterranean regions, and the South-Eastern Asian region. For the region of the Americas, European region, and the Western Pacific region, the SDG 13 (climate action) was the most researched. The SDG 7 (affordable and clean energy) was the least researched in the African region, the region of the Americas, the European region, and the South-East Asian region. In the Eastern Mediterranean region, SDG 10 (reduced inequality) was the least researched while in the Western Pacific region, SDG 5 (gender inequality) was the least researched. The most researched targets of SDG 3 were targets 7 (sexual and reproductive health services) and 8 (universal health coverage) while the least researched targets were 5 (substance use disorders) and 9 (death from hazardous materials). International research collaboration within SDG 3 between high- and low-income countries was inadequate.
    CONCLUSION: The analysis presented in the current study are useful for researchers, institutes, governments, funding agencies, and policy-makers. Countries in Africa, the Middle East, and South-East Asia need to increase their funding and research collaboration in the field of SDGs.
    Keywords:  Bibliometric analysis; Scopus; Sustainable development goals
    DOI:  https://doi.org/10.1186/s12992-020-00602-2
  27. Int J Environ Res Public Health. 2020 Jul 28. pii: E5411. [Epub ahead of print]17(15):
    Qi B, Jin S, Qian H, Zou Y.
      Research on chronic traumatic encephalopathy (CTE) has increased over the past two decades. However, few studies have statistically analyzed these publications. In this work, we conducted a bibliometric analysis of studies on CTE to track research trends and highlight current research hotspots. Relevant original articles were obtained from the Web of Science Core Collection database between 1999 and 2019. CiteSpace and VOSviewer software were used to perform analysis and visualization of scientific productivity and emerging trends. Our results show that the publications related to CTE dramatically increased from four publications in 1999 to 160 publications in 2019. The United States dominated this field with 732 publications (75.934%), followed by Canada with 88 publications (9.129%). Most of related publications were published in the journals with a focus on molecular biology, immunology, neurology, sports and ophthalmology, as represented by the dual-map overlay. A total of 11 major clusters were explored based on the reference co-citation analysis. In addition, three predominant research topics were summarized by clustering high-frequency keywords: epidemiological, clinical and pathological studies. The research frontiers were the diagnosis of diseases using new neuroimaging techniques, and the investigation of the molecular mechanism of tau aggregation. This study provides researchers with valuable guidance in the selection of research topics.
    Keywords:  CiteSpace; VOSviewer; bibliometrics; chronic traumatic encephalopathy
    DOI:  https://doi.org/10.3390/ijerph17155411
  28. J Environ Manage. 2020 Sep 15. pii: S0301-4797(20)30816-1. [Epub ahead of print]270 110886
    Usman M, Ho YS.
      Fenton based treatments have received tremendous attention in the recent decades as viable strategies for soil and water remediation. There exist different processes associated to the Fenton oxidation. Efficiency, reaction chemistry, and environmental consequences of these processes vary according to the iron (Fe) activation techniques such as soluble Fe(II) (homogeneous Fenton process), soluble Fe(II) and chelating agent (modified-Fenton), Fe minerals or solids (heterogeneous Fenton), iron and UV light (photo-Fenton) and electro-Fenton oxidation. Despite immense amount of research articles and reviews related to the Fenton oxidation, no bibliometric study of this topic has been published to our knowledge. Bibliometric studies provide a useful means to track research output and scholarly trends in a field. Here, we conducted a bibliometric study of the publications on this theme (>4000 documents) published during the past three decades available from the Science Citation Index Expanded (SCI-EXPANDED) database of the Web of Science Core Collection (Clarivate Analytics). Based on the bibliometric analysis of 4349 documents, various essential research indicators were described such as the type and language of publications, the most prominent authors in this theme, the most impactful articles, research categories, journals, institutions, and the countries, that have made the greatest contribution to this theme along with potential research hotspots. This bibliometric study allowed visualization of the current landscape and future trends in this field to facilitate the future collaborative research and exchange of knowledge.
    Keywords:  Advanced oxidation processes; Bibliometrics; Fenton oxidation; Soil remediation; Wastewater treatment; Water treatment
    DOI:  https://doi.org/10.1016/j.jenvman.2020.110886
  29. Infect Disord Drug Targets. 2020 Jul 27.
    Keighobadi M, Nakhaei M, Sharifpour A, Khasseh AA, Safanavaei S, Tabaripour R, Aliyali M, Abedi S, Mehravaran H, Banimostafavi ES, Fakhar M.
      BACKGROUND: This study was designed to analyze the global research on Lophomonas spp. using bibliometric techniques.METHODS: A bibliometric research was carried out using the Scopus database. The analysis unit was the research articles conducted on Lophomonas spp.
    RESULTS: Totally, 56 articles about Lophomonas spp. were indexed in the Scopus throughout 1933-2019 ( 87 years ) with the following information: (A) The first article was published in 1933; (B) 21 different countries contributed in studies related to Lophomonas spp.; (C) China ranked first with 16 publications about Lophomonas spp.; and (D) "Brugerolle, G" and "Beams, H.W." from France and the US participated in 4 articles respectively, as the highest number of publications in the Lophomonas spp. network.
    DISCUSSION: After 87 years, Lophomonas still remains unknown for many researchers and physicians around the world. Further studies with high quality and international collaboration are urgently needed to determine different epidemiological aspects and the real burden of the mysterious parasite worldwide.
    Keywords:  Bibliometric; Lophomonas spp.; lophomoniasis; scientific collaboration; scopus
    DOI:  https://doi.org/10.2174/1871526520666200727153142
  30. Rev Chil Pediatr. 2020 Feb;pii: S0370-41062020000100139. [Epub ahead of print]91(1): 139-145
    Schonhaut Berman L, Millan Klüsse T, Zepeda Ortega AJ.
      Revista Chilena de Pediatría (RCHP) has been published uninterruptedly since its first edition in Ja nuary 1930, beyond political and economic fluctuations, technological innovation, and social trans formations. The objective of this article is to pay tribute to and thank the editors who participated so actively in the publication of the RCHP and to review the major milestones, which have led it to the position it has today as a mainstream magazine. Since its entry into the digital world two deca des ago, there has been a significant increase in the flow of manuscripts received, participation of foreign authors, citations received and promotion in international rankings. In 2014, the RCHP was incorporated into the National Library of Medicine (NLM) and, in 2017, into the Emerging Sources Citation Index (ESCI), while evaluating to receive an Impact Factor (IF) from the Journal Citation Report (JCR). As a representative magazine of a scientific society, it is essential to maintain a balance between scientific and economic sustainability, the promotion of national and international publica tion, the scientific impact need for continuing rising in international rankings, and the impact on our children>s care in the different corners of the country.
    DOI:  https://doi.org/10.32641/rchped.v91i1.1684
  31. Forensic Sci Rev. 2020 Jul;pii: FSRv32n2-4. [Epub ahead of print]32(2): 117-127
    Menezes RG, Usman MS, Memon MM, Siddiqi TJ, Madadin M.
      Sudden infant death syndrome (SIDS) is a poorly understood disorder, and its pathophysiology and risk factors remain unclear. Research in the area is the key to combating the pervasive prevalence of this fatal disorder. We sought to identify the top 50 articles concerning SIDS and study their bibliometric characteristics to gain an insight into the research trends in this area. Using the Scopus database, two independent reviewers conducted a literature search using a prespecified search string. Results were arranged according to the citation count, and the top 50 relevant articles were selected. No time restrictions were set, and all types of articles were included. A detailed analysis was carried out to identify the trends and characteristics of the top 50 articles. The top 50 articles were published between 1972 and 2011, with the most productive 5-year interval being 1991-1995. These 50 papers accumulated a total of 13,703 citations (median = 236 citations per paper). Among these, about 9% were self-citations. The citations received by these core papers seemed to decline post-2009. The top 50 articles were published in 21 different journals, with Pediatrics contributing the most (n = 15). US authors were listed for 60% of the articles (n = 30). None of the articles originated from Asian authors. Our manuscript highlights the characteristics of impactful articles on SIDS - and this can act as a directive for researchers aiming to publish on this topic. Bibliometric parameters suggest a decreasing research interest in the fi eld of SIDS, which is concerning, and efforts should be made to promote research. Furthermore, the lack of influential research from Asian authors is also troubling. Funding should preferably be directed toward Asian researchers to bridge the gap in knowledge.
    Keywords:  Bibliometric analysis; SIDS; citations; sudden infant death syndrome; sudden unexpected death in infancy