bims-evares Biomed News
on Evaluation of research
Issue of 2020‒07‒26
thirty papers selected by
Thomas Krichel
Open Library Society


  1. Turk Neurosurg. 2020 Jan 16.
    Sarica C, Aksu Sayman O.
      AIM: To analyze the resident's contribution toward research productivity and the publication rates of theses conducted in neurosurgery departments across Turkey.MATERIAL AND METHODS: A retrospective bibliometric analysis was conducted using databases of Council of Higher Education Thesis Center (TC), Scopus, and Journal Citation Reports. Neurosurgeons who uploaded their graduation thesis to the TC database between the years 2000 and 2017 were considered. Each neurosurgeon was individually searched for in the Scopus database regarding their publication production. Mann-Whitney U and Kruskal-Wallis tests were employed for statistical analysis.
    RESULTS: We identified 709 neurosurgeons, and 269 (37.9%) of them published their theses in indexed journals. The average interval between the publication year of the thesis and the year of the neurosurgery training completion was 3.8 ± 2.7 years. Neurosurgeons who published their theses in the first two-year period after graduation had published their theses in significantly higher impact factor journals than those who published theirs between 3-5 years (p = 0,015) and more than 5 years after graduation (p 0.001). We identified 8 (1.1%) and 347 (49%) neurosurgeons who had pre-residency and intra-residency publications, respectively. Neurosurgeons who published an intra-residency article had a significantly higher overall publication counts compared with those who did not (p 0.001).
    CONCLUSION: The ratio of publication of theses in the field of neurosurgery is higher than the ratios previously indicated for various studies. We have provided new benchmarks for individual academic productivity during and after the residency.
    DOI:  https://doi.org/10.5137/1019-5149.JTN.28459-19.3
  2. J Contemp Brachytherapy. 2020 Jun;12(3): 283-289
    Tang X, Li F, Yang Y, Zhao H, Mu X, Mao Z.
      Purpose: The aim of this study was to identify the 100 most cited research articles in prostate cancer brachytherapy (PCB) and to review the characteristics of these citation.Material and methods: The Web of Science Core Collection was used to identify the 100 most cited articles in PCB as of December 31st, 2019. The following important information was extracted: year and month of publication, title, journal, country of origin, authors, type of article, treatment modality, and topics.
    Results: The 100 most cited articles in PCB were published between 1999 and 2018, and the number of citations ranged from 455 to 54; these articles had collectively been cited 10,331 times at the time of search. These articles were from 11 countries, with most publications being from the United States (n = 61), followed by Canada (n = 10), the United Kingdom (n = 8), and Germany (n = 5). The "International Journal of Radiation Oncology, Biology, Physics" published the most articles (n = 47), followed by the "Journal of Urology" (n = 11), "Radiotherapy and Oncology" (n = 10), "Cancer" (n = 7), and "Urology" (n = 6). Permanent interstitial brachytherapy (n = 52) was the most widely used treatment modality, followed by temporary brachytherapy (n = 45). Disease control (n = 51) was the most common topic, followed by side effects (n = 44) and quality of life (n = 27).
    Conclusions: The bibliometric analysis presents a detailed list of the 100 most cited articles in prostate cancer brachytherapy. There are clear recommendations for treatment with prostate cancer brachytherapy. The goal of prostate cancer brachytherapy is to improve long-term outcomes and quality of life.
    Keywords:  bibliometric analysis; brachytherapy; most cited articles; prostate cancer
    DOI:  https://doi.org/10.5114/jcb.2020.96872
  3. J Cardiothorac Surg. 2020 Jul 20. 15(1): 175
    Allen N, O'Sullivan K, Jones JM.
      This study is an analysis of the 100 most cited articles in mitral valve surgery. A bibliometric analysis is a tool to evaluate research performance in a given field. It uses the number of times a publication is cited by others as a proxy marker of its impact. The most cited paper Carpentier et al. discusses mitral valve repair in terms of restoring the geometry of the entire valve rather than simply narrowing the annulus (Carpentier, J Thorac Cardiovasc Surg 86:23-37, 1983). The first successful mitral valve repair was performed by Elliot Cutler at Brigham and Women's Hospital in 1923 (Cohn et al., Ann Cardiothorac Surg 4:315, 2015). More recently percutaneous and minimally invasive techniques that were originally designed as an option for high risk patients are being trialled in other patient groups (Hajar, Heart Views 19:160-3, 2018). Comparison of percutaneous method with open repair represents an expanding area of research (Hajar, Heart Views 19:160-3, 2018). This study will analyse the top 100 cited papers relevant to mitral valve surgery, identifying the most influential papers that guide current management, the institutions that produce them and the authors involved.
    Keywords:  Bibliometric analysis; Cardiac surgery; Cardiovascular; Minimally invasive; Mitral repair; Mitral valve; Mitral valve replacement; Percutaneous surgery; Robotic surgery; Valve surgery
    DOI:  https://doi.org/10.1186/s13019-020-01214-y
  4. Biomed Res Int. 2020 ;2020 8787394
    Huang X, Liu X, Shang Y, Qiao F, Chen G.
      Background: Bone regeneration is a frequent research topic in clinical studies, but macroscopic studies on the clinical application of bone regeneration are rare. We conducted a bibliometric analysis, using international databases, to explore the clinical application and mechanism of bone regeneration, to highlight the relevant research hotspots and prospects. Material and Methods. Scientific reports on bone regeneration published during 2009-2019 were retrieved from PubMed. VOSviewer for cooccurrence keywords and authorship analysis. BICOMB software was used to retrieve high-frequency words and construct a text/coword matrix. The matrix was inputted into gCLUTO software, managed by biclustering analysis, in order to identify hotspots, which could achieve mountain and matrix visualizations. The matrix was also analyzed by using Ucinet 6 software for social network analysis. A strategic diagram was used for further analysis of the research hotspots of bone regeneration by "SCIMAT" software. We searched the Web of Science for relevant articles.Results: Eighty-nine high-frequency major MeSH terms were obtained from 10237 articles and were divided into 5 clusters. We generated a network visualization map, an overlay visualization mountain map, and a social network diagram. Then, the MeSH terms were subdivided into 7 categories according to each diagram; current research hotspots were identified as scaffold, drug effect, osseointegration in dental implant, guided bone regeneration, factors impacting bone regeneration, treatment of bone and tissue loss, and bone regeneration in dental implants.
    Conclusion: BICOMB, VOSviewer, and other bibliometric tools revealed that dental implants, scaffolds, and factors impacting bone regeneration are hot research topics, while scaffolds also hold promise from the perspective of bone tissue regeneration.
    DOI:  https://doi.org/10.1155/2020/8787394
  5. Pathogens. 2020 Jul 17. pii: E585. [Epub ahead of print]9(7):
    Lianou DT, Fthenakis GC.
      The present study is a scientometrics evaluation of refereed publications on bacterial mastitis in sheep; the objectives were the evaluation of the relevant papers and the presentation of quantitative characteristics regarding their scientific content and bibliometric details. The Web of Science platform was used with search terms: [mastitis OR *mammary infection*] AND [sheep OR ewe* OR ovine] for papers from 1970 tο 2019; only 'articles', 'reviews', 'proceedings papers', or 'data papers' were evaluated, whilst documents related solely to contagious agalactia, mammary aspects of lentiviral infections, or infections of the teats and the udder skin were excluded. Finally, 580 papers were considered in detail. The number of published papers increased from 8 during the 1970s to 273 during the 2010s. These papers originated from 43 countries (most from Greece or Spain, n = 87 from each) and 240 institutions (145 universities and 95 other establishments), of which 35 produced ≥ 5 papers each. Most papers present original studies (n = 539) with a few reviews (n = 41). The original papers refer to dairy (n = 428), meat (n = 113), or wool (n = 1) production systems and present field (n = 329), laboratory (n = 163), or experimental (n = 67) work; the papers report aetiology (n = 146), risk factors (n = 100), pathogenesis (n = 92), diagnosis (n = 88), effects (n = 66), treatment (n = 50), control (n = 36), or descriptive epidemiology (n = 32) of the disease. Papers related to dairy production present more field and fewer experimental work than papers related to meat production; also, in papers describing work performed in dairy sheep, studies about aetiology, risk factors, and diagnosis of the disease predominate, whilst in papers performed in meat sheep, studies about aetiology, pathogenesis, and effects/diagnosis are reported more often. The papers were published in 175 scientific journals (most in Small Ruminant Research, n = 90, or Journal of Dairy Science, n = 54). On average, the papers received 16.8 total citations and 1.6 yearly citations (h-index = 47). Most papers were published in Scimago classification Q1 (n = 240) or Q2 (n = 230) journals and received 23.4 or 15.4 total citations, respectively. Reviews received more citations than original papers; among the latter, papers with work referring to dairy production received more yearly citations than papers referring to meat production; no differences in citations were seen according to type of work or mastitis aspect covered. Most citations were received by papers from France. Papers published in Journal of Dairy Science or Small Ruminant Research received the most citations. In total, there were 1558 individual authors of the papers, with 24 authors having co-authored > 10 papers each (max: 73 papers); on average, there were 5.2 co-authors per paper (min-max: 1-25). Average number of co-authors progressively increased from 2.1 in the 1970s to 6.3 in the 2010s, with original papers having a higher number of co-authors than reviews: 5.3 and 3.7, respectively. Papers from France had highers number of co-authors (7.9). The findings of this first ever scientometrics study into ovine mastitis indicate that the disease has not been studied as other sheep diseases and that future studies in it should be directed to its control.
    Keywords:  ewe; intramammary infection; mastitis; meta-research; ovine; scientometrics; sheep; subclinical mastitis
    DOI:  https://doi.org/10.3390/pathogens9070585
  6. Int J Environ Res Public Health. 2020 Jul 20. pii: E5228. [Epub ahead of print]17(14):
    Li F, Zhou H, Huang DS, Guan P.
      Climate change is a challenge for the sustainable development of an international economy and society. The impact of climate change on infectious diseases has been regarded as one of the most urgent research topics. In this paper, an analysis of the bibliometrics, co-word biclustering, and strategic diagram was performed to evaluate global scientific production, hotspots, and developing trends regarding climate change and infectious diseases, based on the data of two decades (1999-2008 and 2009-2018) from PubMed. According to the search strategy and inclusion criteria, a total of 1443 publications were found on the topic of climate change and infectious diseases. There has been increasing research productivity in this field, which has been supported by a wide range of subject categories. The top highly-frequent major MeSH (medical subject headings)/subheading combination terms could be divided into four clusters for the first decade and five for the second decade using a biclustering analysis. At present, some significant public health challenges (global health, and travel and tropical climate, etc.) are at the center of the whole target research network. In the last ten years, "Statistical model", "Diarrhea", "Dengue", "Ecosystem and biodiversity", and "Zoonoses" have been considered as emerging hotspots, but they still need more attention for further development.
    Keywords:  bibliometric analysis; biclustering; climate change; co-word analysis; infectious diseases; strategic diagram
    DOI:  https://doi.org/10.3390/ijerph17145228
  7. J Occup Med Toxicol. 2020 ;15 23
    Sweileh WM.
      Background: Burnout and compassion fatigue are closely related concepts. Burnout is thought to develop from occupational stress while compassion fatigue results from being in a caregiver role leading to inability to get engaged in a caring relation. The objective of the current study was to investigate research trends, themes, citations, and key players of publications on burnout and compassion fatigue among healthcare providers.Methods: A validated search query was developed and implemented in the Scopus database. The study period was all times up to 2019.
    Results: Research query found 4416 publications. Publications started in 1978. Steep growth in the number of publications was observed in the last decade. There were seven research themes in the retrieved publications; six for burnout and one for compassion fatigue. Approximately 36% of the retrieved publications were about nurses; 36% were about physicians, 10% were about medical residents and the remaining did not include a specific profession. The retrieved publications received an average of 22.2 citations per article. Four of the top 10 active journals were in the field of nursing and two in the field of general medicine, one in public health, one in neurology, one in psychology, and one was multidisciplinary. The USA ranked first with 1292 (29.3%) articles followed by Spain (n = 248; 5.6%) and the UK (n = 247; 5.6%). Mayo Clinic was the most active institution (n = 93; 2.1%) followed by Harvard University (n = 46; 1.0%) and University of Washington, Seattle (n = 45; 1.0%). A total of 16,108 authors participated in publishing the retrieved documents, an average of 3.6 authors per article. Shanafelt, T.D. was the most active author (n = 78; 1.8%) followed by Dyrbye, L.N. (n = 43; 1.0%), and West, C.P. (n = 37; 0.8%). A total of 472 (10.7%) articles declared funding.
    Conclusion: The current study was carried out to draw attention to the wellbeing of healthcare providers. Retrieved literature was dominated by high-income countries. Lack of information from low- and middle-income countries will hinder planning for interventional strategies and will negatively affect the health system and the patients. Health researchers in low- and middle-income countries need to focus on burn out and compassion fatigue.
    Keywords:  Burnout; Citation analysis; Compassion fatigue; Research themes; Research trends
    DOI:  https://doi.org/10.1186/s12995-020-00274-z
  8. Childs Nerv Syst. 2020 Jul 22.
    Akhaddar A.
      PURPOSE: The issue of error of scientific publications has recently attracted the interest of medical researchers. However, there was no similar evaluation of errata in the field of neurosurgical literature. The aim of this study is to evaluate published errata in neurosurgical journals and to discuss the strategies that can be used in order to reduce errata frequency and to prevent their dissemination.METHODS: A literature search of error publication in 28 main neurosurgical journals was performed using PubMed (1990-2019). Extracted data included authors' name, chronology, country of origin, journal impact factor, subject area, research type, reason for published error, and source of responsibility.
    RESULTS: A total of 441 published errata were identified and analyzed. Most studies were published within the last 6 years. The majority of publications had one single reason for the published erratum. The mean amount of time between the original publication date of the paper and the published erratum was 6.72 months. The most common reason given for published erratum was that of authorship, followed by text content, figures, and tables. The mean published error rate was 0.81% (2014-2019).
    CONCLUSION: Unlike other specialties, errors are infrequently observed in neurosurgical journals and mostly without altering the interpretation of study findings. However, improvement is still needed. With the development of online journal publishers and scientific social media platforms, new strategies must be studied in order to track and correct errors better and faster. Also, authors and publishers have to work better together in order to produce high-quality scientific papers.
    Keywords:  Bibliometrics; Correction; Neurosurgery; Publications
    DOI:  https://doi.org/10.1007/s00381-020-04824-y
  9. Anal Verbal Behav. 2020 Jun;36(1): 87-101
    Cariveau T, Robbins H, Cividini-Motta C, Delfs C.
      Recent articles by the editorial board of The Analysis of Verbal Behavior (TAVB) include calls for greater integration, collaboration, and inclusion. In so doing, it may be helpful to consider TAVB's current reach. Previously, Petursdottir, Peterson, and Peters (The Analysis of Verbal Behavior, 25, 109-121, 2009) described the number of citations of articles published in TAVB from 1983 to 2007. The authors found that the greatest number of references to TAVB were self-citations, followed predominantly by other behavior-analytic outlets, such as the Journal of Applied Behavior Analysis. Here, we replicate and extend the work of Petursdottir et al. (The Analysis of Verbal Behavior, 25, 109-121, 2009) by conducting a citation analysis of references included in TAVB publications from 2008 to 2018 and also report citations by these venues to TAVB. This citation analysis allows for a more recent review of those outlets that articles published in TAVB commonly reference and those that cite TAVB. Generally, self-citations predominated, with articles published in TAVB commonly referencing books and chapters. The implications of these practices on the impact of TAVB and suggestions for moving forward are considered.
    Keywords:  The Analysis of Verbal Behavior; citation analysis; impact factor
    DOI:  https://doi.org/10.1007/s40616-020-00128-z
  10. J Voice. 2020 Jul 18. pii: S0892-1997(20)30238-1. [Epub ahead of print]
    Pasick LJ, Yeakel H, Sataloff RT.
      OBJECTIVE: To investigate sex bias in laryngology research and publishing.MATERIALS AND METHODS: Articles published in 2019 in seven mainstream otolaryngology journals were reviewed. Original manuscripts were included. Study type (medical, speech-language pathology, basic science, or pedagogy), subject sex, ≥50% sex-matching (SM≥50), sex-based analysis, and bibliometric data including author sex were recorded.
    RESULTS: Of 1619 publications reviewed, 259 patient-centered original laryngology studies were included, totaling 7,130,991 subjects (3,411,741 [47.8%] male; 3,718,694 [52.1%] female; 556 [0.0%] unreported). 29 studies included subjects of a single sex and 14 did not report sex. 114 (44%) studies met SM≥50, and 95 (37%) used sex-based analysis; no differences were found among study types or location. Sex-based analysis was used less in single-institution (33%) than database studies (62%, P = 0.01). No difference in SM≥50 was found among single or multi-institution, or database. There were 1340 total authors (578 [43%] female). First, corresponding, and senior authors were 47%, 39%, and 35% female, respectively. Studies that had female first and/or senior authors did not differ in rates of SM≥50 or sex-based analysis or mean enrollment of females compared to studies with male first and senior authors. The proportion of female physician first and senior authors did not differ from the proportion of female Association of American Medical Colleges otolaryngology faculty, but was non-significantly smaller than the proportion of female laryngology fellows at four academic institutions.
    CONCLUSION: Laryngology research exhibits sex bias in subject enrollment and sex-based analysis. Female authorship was representative of national demographics and author sex did not influence the rate of sex bias.
    Keywords:  Laryngology–Sex bias–Research–Bibliometric analysis–Review
    DOI:  https://doi.org/10.1016/j.jvoice.2020.06.021
  11. Sci Rep. 2020 Jul 21. 10(1): 12097
    Sun Y, Latora V.
      The exchange of knowledge across different areas and disciplines plays a key role in the process of knowledge creation, and can stimulate innovation and the emergence of new fields. We develop here a quantitative framework to extract significant dependencies among scientific disciplines and turn them into a time-varying network whose nodes are the different fields, while the weighted links represent the flow of knowledge from one field to another at a given period of time. Drawing on a comprehensive data set on scientific production in modern physics and on the patterns of citations between articles published in the various fields in the last 30 years, we are then able to map, over time, how the ideas developed in a given field in a certain time period have influenced later discoveries in the same field or in other fields. The analysis of knowledge flows internal to each field displays a remarkable variety of temporal behaviours, with some fields of physics showing to be more self-referential than others. The temporal networks of knowledge exchanges across fields reveal cases of one field continuously absorbing knowledge from another field in the entire observed period, pairs of fields mutually influencing each other, but also cases of evolution from absorbing to mutual or even to back-nurture behaviors.
    DOI:  https://doi.org/10.1038/s41598-020-68774-w
  12. Heliyon. 2020 Jul;6(7): e04415
    Kaptay G.
      The best possible methods are needed to evaluate the scientific excellence of individuals and research groups in order to award positions and distribute research grants with higher efficiency. It is shown here that for the symmetrical distribution of citations of an individual the currently used h-index is approximately half of the square root of the total number of citations, according to the rule of Hirsch. It is also shown that deviations from this "ideal" h-index are common and they are due to deviations in the citation distributions of different individuals. However, those deviations are not characteristic for the scientific excellence of an individual and therefore they lead only to confusion in scientific evaluation. Therefore the h-index is suggested here to be replaced by the k-index. The k-index of an individual is calculated from his/her all independent citations as self-citations cannot be considered as an indication of the excellence of any paper or its authors (the citation is independent if there is no overlap in the lists of authors of the citing and the cited paper). The k-index takes into account only partial citations for each author of multi-authored papers. In ideal case the shares of the authors in a paper are published in the same paper similarly as shares of the inventors are published in patents. If not, the share of each co-author is taken equal to the inverse of the number of authors of the given paper. The k-index of an individual is defined as the square root from the sum of his/her independent partial citations. The value of the k-index is dependent on the databank used for the citations and on the time of the measurement. If scientists of similar age working in similar fields are compared using the same databank, their personal scientific excellence will be proportional to their k-index. When the k-index is divided by the number of active scientific years, a correction can be made for different ages of different applicants. In average, the k-index has similar values, but a wider range compared to the h-index. More importantly the k-index is not biased by this or that type of citation distribution of an individual, not biased by the self-citations and not biased by the results of the co-authors. The squares of k-indexes of smaller units are additive, and so the k-index is extended to journals, publishing houses, departments, institutions, countries, continents and to the mankind.
    Keywords:  Citation distribution; Education; Evaluation in education; Information management; Information science; Multi-authored papers; Self-citations; Social policy; h-index; k-index
    DOI:  https://doi.org/10.1016/j.heliyon.2020.e04415
  13. Asian J Psychiatr. 2020 Jul 13. pii: S1876-2018(20)30423-8. [Epub ahead of print]54 102311
    Albahari D, Bashir M.
      OBJECTIVES: The productivity of women authors in the field of mental health in the Gulf Cooperation Council countries (GCC) is not known. This study aims to explore women's mental health research productivity in GCC countries.METHODS: The authors searched five databases for published articles from the GCC region in the field of mental health between 2015-2019. The gender of the authors was inferred from the first name. The authors examined the qualified articles for women authorship, h-index, and research design.
    RESULTS: The cumulative proportion of articles with women authors was 41.6 %. There was a significant difference across the countries; Bahrain has the highest percentage (79.3 %), while Oman had the lowest (33.8 %); p < 0.05. Out of the 428 articles that included at least one-woman author, 184 articles (43.0 %) had a woman first author, and 149 (30.4 %) had a woman as a senior author, the countries' variations were significant; p < 0.05. The majority of women authors, except Qatar, were affiliated to academic institutes. The mean h-index of GCC women authors was 4. Descriptive research was the most common research design in most countries apart from Qatar, where experimental research was dominant.
    DISCUSSION: This is the first study to review GCC women's research productivity in the field of mental health. Given the relatively short history of medical education and research in the region, the results appear promising, and the data generated shall serve as a foundation to promote further studies in the field.
    Keywords:  GCC; Mental health research; Research productivity; Women authors
    DOI:  https://doi.org/10.1016/j.ajp.2020.102311
  14. Am J Hosp Palliat Care. 2020 Jul 24. 1049909120944863
    Mehta AK, Patel R, Patel D, Davis MP.
      BACKGROUND: There has been a call for palliative care (PC) published research to support the impact and need for more specialty PC services.OBJECTIVE: The purpose of this study was to characterize research in PC over a 15-year period in 3 PC journals published in the United States.
    DESIGN: The authors reviewed every issue of the Journal of Pain and Symptom Management, Journal of Palliative Medicine, and American Journal of Hospice and Palliative Medicine from 2004 through 2018. Studies included were original articles and brief reports. Study type (qualitative, quantitative), author (first and last), gender, and professional degree of the author (first and last) were recorded.
    RESULTS: A total of 4881 articles were included in this study. The proportion of quantitative papers significantly increased across 3 time points from 63% to 67% to 78%. The proportion of women first authors increased across all 3 time points (54%, 2004-2008; 57%, 2009-2013; 60%, 2014-2018), and the proportion of women last authors increased across all time points (38%, 2004-2008; 44%, 2009-2013; 46%, 2014-2018). More than 40% of authors were physicians.
    CONCLUSIONS: Published PC studies are increasingly quantitative in design. Gender authorship is female dominant for the first authors and increasingly equal across genders for the last authors.
    Keywords:  gender; interdisciplinary; palliative care; peer-reviewed; publications; research
    DOI:  https://doi.org/10.1177/1049909120944863
  15. Biotechnol Rep (Amst). 2020 Sep;27 e00502
    Bianchet RT, Vieira Cubas AL, Machado MM, Siegel Moecke EH.
      The search for innovation and new approaches to mitigate environmental impact encourages the cosmetic industry to explore new methodologies and materials. Bacterial cellulose has been the focus of research because it has high biocompatibility, skin adhesion, and water retention, in addition to being a sustainable alternative material. This review paper explored the perspectives emerging in the scientific literature on the use of bacterial cellulose in cosmetics. This bibliometric review was performed using four databases along with three software programs to obtain a more complete analysis. The search identified 18 articles related to the topic. Because the highest number of articles was published in the year 2019, it was estimated that more publications will appear in the near future. Studies have demonstrated the potential for the use of bacterial cellulose in face masks for the delivery of active compounds and increased skin hydration, and it can also act as an emulsion stabilizer.
    Keywords:  Bacterial cellulose; Cosmetics; Gluconacetobacter xylinus
    DOI:  https://doi.org/10.1016/j.btre.2020.e00502
  16. Int J Rehabil Res. 2020 Jul 20.
    Menezes KKP, Nascimento LR, Avelino PR, Teixeira-Salmela LF.
      The purpose of the present study was to examine the main characteristics of clinical trials in physiotherapy aimed at improving walking speed after stroke, as well as the correlation between trials' methodological quality and journals' Impact Factor. Searches were conducted on Physiotherapy Evidence Database for all randomized controlled trials aiming at improving walking speed after stroke. Data extracted from the studies were: continent, language, methodological quality, year of publication, number of normalized citations, open access, sample size, measurements of walking speed, interventions, comparators, and prior registration. Data extracted from the journals were: 2018 Impact Factor, open access, endorsement of CONSORT recommendations, predatory classification, PubMed indexing, and Journal Citation Reports category. The main outcomes were journals' Impact Factor, open access, CONSORT recommendations endorsement by the journal, and methodological quality. Spearman correlation coefficients were calculated to explore the relationships between trials' methodological quality and journals' Impact Factor. Two hundred twenty-seven trials were published in 62 journals. The number of trials has increased over the last years. Most of these trials had citations, moderate methodological quality, were published in English, in open access journals, which endorse the CONSORT recommendations, and had Impact Factor ≥2.0. The results indicated a positive, but weak correlation between methodological quality and journals' Impact Factor. Thus, trials in physiotherapy aimed at improving walking speed after stroke have increased over the last years. Overall, trials had moderate methodological quality and were published in journal with moderate-to-high Impact Factor. Best trials were not necessarily published in journals with high Impact Factor.
    DOI:  https://doi.org/10.1097/MRR.0000000000000426
  17. BMC Health Serv Res. 2020 Jul 24. 20(1): 688
    Pirri S, Lorenzoni V, Turchetti G.
      BACKGROUND: Medication adherence has been studied in different settings, with different approaches, and applying different methodologies. Nevertheless, our knowledge and efficacy are quite limited in terms of measuring and evaluating all the variables and components that affect the management of medication adherence regimes as a complex phenomenon. The study aim is mapping the state-of-the-art of medication adherence measurement and assessment methods applied in chronic conditions. Specifically, we are interested in what methods and assessment procedures are currently used to tackle medication adherence. We explore whether Big Data techniques are adopted to improve decision-making procedures regarding patients' adherence, and the possible role of digital technologies in supporting interventions for improving patient adherence and avoiding waste or harm.METHODS: A scoping literature review and bibliometric analysis were used. Arksey and O'Malley's framework was adopted to scope the review process, and a bibliometric analysis was applied to observe the evolution of the scientific literature and identify specific characteristics of the related knowledge domain.
    RESULTS: A total of 533 articles were retrieved from the Scopus academic database and selected for the bibliometric analysis. Sixty-one studies were identified and included in the final analysis. The Morisky medication adherence scale (36%) was the most frequently adopted baseline measurement tool, and cardiovascular/hypertension disease, the most investigated illness (38%). Heterogeneous findings emerged from the types of study design and the statistical methodologies used to assess and compare the results.
    CONCLUSIONS: Our findings reveal a lack of Big Data applications currently deployed to address or measure medication adherence in chronic conditions. Our study proposes a general framework to select the methods, measurements and the corpus of variables in which the treatment regime can be analyzed.
    Keywords:  Bibliometric analysis; Big data; Medication adherence; Scoping review
    DOI:  https://doi.org/10.1186/s12913-020-05544-4
  18. Microb Ecol. 2020 Jul 21.
    Cassán F, López G, Nievas S, Coniglio A, Torres D, Donadio F, Molina R, Mora V.
      Azospirillum is one of the most successful plant growth-promoting bacteria (PGPB) genera and it is considered a study model for plant-bacteria interactions. Because of that, a wide broad of topics has been boarded and discussed in a significant number of publications in the last four decades. Using the Scopus® database, we conducted a bibliographic search in order to analyze the number and type of publications, the authors responsible of these contributions, and the origin of the researchers, as well as the keywords and journals selected by the authors, among other related characteristics, with the aim to understand some less addressed details about the work done with Azospirillum worldwide since its discovery in 1925. Despite that the largest numbers of publications about this bacterium were obtained between the 1970 and 1980s, there is still a linear increase tendency in the number of published works. Understanding the mechanisms involved in the ability of these bacteria to promote growth in a wide broad of plant species under both laboratory and field conditions has been a preferential target for these published articles. This tendency could be considered a cause or consequence of the current increase in the number of commercial products formulated with Azospirillum around the world and a catalyzer for the increase of published articles along time.
    Keywords:  Auxins; Azospirillum; Nitrogen fixation; PGPB; Phytohormones
    DOI:  https://doi.org/10.1007/s00248-020-01559-w
  19. Rev Port Cardiol. 2020 Jul 16. pii: S0870-2551(20)30274-2. [Epub ahead of print]
    Donato H, Cardim N.
      
    DOI:  https://doi.org/10.1016/j.repc.2020.06.008
  20. Surg Obes Relat Dis. 2020 Jun 12. pii: S1550-7289(20)30326-9. [Epub ahead of print]
    Clapp B, Harper B, Barrientes A, Wicker E, Alvara C, Tyroch A.
      BACKGROUND: The Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program (MBSAQIP) first released its Participant Use Data File in 2015. Since then, surgeons have eagerly evaluated data now available on >750,000 patients, and a yearly increase in the number of publications using the Participant Use File was anticipated.OBJECTIVE: To evaluate the impact of the MBSAQIP in surgical literature.
    SETTING: University surgical department, United States.
    METHODS: A literature search was performed to identify articles published using the MBSAQIP database up to March 2019. PubMed, Clinical Key (both indexed for MEDLINE), and Cochrane databases were queried using the keywords "MBSAQIP" and "Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program." Abstracts presented at ObesityWeek, SAGES, and the Clinical Congress of the ACS in 2016 to 2019 were also examined. Duplicates, letters to the editor, commentaries, statements, and position pieces were excluded. Articles describing projects that used MBSAQIP data to study <5 accredited centers were also excluded.
    RESULTS: As of March 2019, there were 114 results in PubMed, 216 results in Clinical Key, and 0 in Cochrane using the search terms. Additionally, 184 abstracts were included from the journal supplements from ObesityWeek, SAGES, and the Clinical Congress of the ACS. After elimination of duplicates, there were 327 total results. After exclusions, 55 published manuscripts and 126 abstracts remained.
    CONCLUSION: The MBSAQIP is a resounding success. A substantial body of research has already been produced from it and is growing with time. Gaps in current knowledge are being targeted through analyses of this single, large-scale database. The MBSAQIP will remain a valuable leading resource in metabolic and bariatric surgery.
    Keywords:  MBSAQIP; Metabolic and Bariatric Surgery Accreditation and Quality Improvement Program
    DOI:  https://doi.org/10.1016/j.soard.2020.06.006
  21. World Neurosurg. 2020 Jul;pii: S1878-8750(20)30783-X. [Epub ahead of print]139 688-689
    Zhao Y, Zhao T, Huang Y, Shao H, Jin M, Zhang J.
      
    DOI:  https://doi.org/10.1016/j.wneu.2020.04.076
  22. J Cancer Educ. 2020 Jul 19.
    Khalafallah AM, Jimenez AE, Mukherjee D.
      Much research has been conducted to investigate predictors of an academic career trajectory among neurosurgeons in general. This study seeks to examine a cohort of fellowship-trained neurosurgical oncologists to determine which factors are associated with a career in academia. Publicly available data on fellowship-trained neurosurgical oncologists was aggregated from ACGME-accredited residency websites, from program websites listed on the AANS Neurosurgical Fellowship Training Program Directory, and from professional websites including Doximity. Bivariate analyses were conducted to determine covariates for a logistic regression model, and a multivariate analysis was conducted to determine which variables were independently associated with an academic career trajectory. A total of 87 neurosurgical oncologists were identified (1991-2018). A total of 73 (83.9%) had > 1 year of protected research time in residency, 33 (37.9%) had an h-index of ≥2 prior to residency, and 63 (72.4%) had an h-index of ≥2 during residency. In multivariate analysis, the only factor independently associated with academic career trajectory among neurosurgical oncologists was achieving an h-index of ≥2 during residency (odds ratio [OR] = 2.93, p = .041). Memorial Sloan Kettering Cancer Center graduated the most neurosurgical oncologists in our cohort (n = 23). Our study establishes a novel factor that is predictive of academic career trajectory among fellowship-trained neurosurgical oncologists, specifically having an h-index of ≥2 during residency. Our results may be useful for those mentoring students and trainees with an interest in pursuing academia.
    Keywords:  Education; Fellowship; Neuro-oncology; Neurosurgery
    DOI:  https://doi.org/10.1007/s13187-020-01833-y
  23. Cureus. 2020 Jun 16. 12(6): e8655
    Kearns KN, Chen CJ, Jane JA, Kalani Y, Shaffrey ME, Park MS.
      Background Compensation has historically been unequal for men versus women in medical fields, particularly in surgical subspecialties.  Objective We analyzed associations between gender and compensation and identified factors associated with compensation among male and female academic neurosurgeons in the United States (US) public institutions. Methods This is a cross-sectional study of available data for the 2016-2017 fiscal years associated with male and female neurosurgical faculty from public, academic institutions within the US. The data used for analysis included total annual salary, which consisted of the base salary and additional compensation. Other gleaned data included faculty demographics, training, and academic appointments. The male and female neurosurgeons' data were separated into two respective gender groups and then were compared. Predictors of compensation were identified using univariable and non-imputed and multiply-imputed multivariable statistical models. Results The cohort was comprised of 460 neurosurgery faculty members (female n=34; male n=426). Total annual salaries were comparable between the genders. Females were more likely to be younger (p=0.001), to have completed neurosurgery training recently (p=0.003), to have had fellowship training (p=0.011), and to have lower h--indices (p=0.003) compared to males. Males and females differed in academic ranks (p=0.035) and neurosurgical subspecialties (p=0.038). Midwest (a[Formula: see text])=-US$337,516.7, p=0.002), South (a[Formula: see text]=-US$302,500.5, p=0.003), and West (a[Formula: see text]=-US$276,848.8, p=0.005) practices were independent predictors of lower annual compensation. Chair position (a[Formula: see text]=US$174,180.3, p=0.019) and associate professorship (a[Formula: see text]=US$126,633.4, p=0.037) were independent predictors of higher annual compensation. Gender was not a significant predictor of total annual compensation. Conclusions Total salaries were not different between male and female neurosurgeons in public, academic institutions in the US. Gender was not a significant predictor of total annual compensation. This study is applicable to public institutions in states with Freedom of Information Act reporting requirements.
    Keywords:  academic neurosurgery; compensation; equity; gender; public
    DOI:  https://doi.org/10.7759/cureus.8655
  24. Acta Biomed. 2020 Jul 20. 91(9-S): 34-39
    Odone A, Salvati S, Bellini L, Bucci D, Capraro M, Gaetti G, Amerio A, Signorelli C.
      BACKGROUND AND AIM OF THE WORK: To reflect on content, trends and quality of scientific publishing on COVID-19. In particular, to report on the systematic screening, quantitative assessment and critical appraisal of the first 10,000 scientific papers published on COVID-19 and to compare how scientific outputs matched identified research priorities and public health needs.METHODS: A comprehensive research strategy was developed to systematically retrieve on a daily basis all studies published on COVID-19. From included studies we extracted: bibliometric parameters, country of studies' implementation and study design. We assigned papers to 25 a priori defined COVID-19-related topics and we described scientific outputs in relation to countries' academic publishing ranking, as well as COVID-19 burden.
    RESULTS: 10,000 scientific articles were published on COVID-19 between 20th January and 7th May 2020,  accounting for 2.3% of total scientific production over the study period. One third (33%) focused on COVID-19 clinical management, with little adherence to identified research priorities.   Over sixty per cent of papers were opinion pieces not reporting original data. Papers were published on 1881 different journals but with half of scientific production included in 8% of journals. The US accounted for one fourth of total scientific production, followed by China (22.2%) and Italy (9%).
    CONCLUSIONS: Never before in the history of academic publishing such a great volume of research focused on a single topic, this being likely to introduce major changes in the way science is produced and communicated, at the risk of  bringing it far from its ultimate aim: informing clinical and public health practice and decision making.
    DOI:  https://doi.org/10.23750/abm.v91i9-S.10121
  25. PLoS One. 2020 ;15(7): e0236166
    Graham SS, Majdik ZP, Clark D, Kessler MM, Hooker TB.
      Recently, concerns have been raised over the potential impacts of commercial relationships on editorial practices in biomedical publishing. Specifically, it has been suggested that certain commercial relationships may make editors more open to publishing articles with author conflicts of interest (aCOI). Using a data set of 128,781 articles published in 159 journals, we evaluated the relationships among commercial publishing practices and reported author conflicts of interest. The 159 journals were grouped according to commercial biases (reprint services, advertising revenue, and ownership by a large commercial publishing firm). 30.6% (39,440) of articles were published in journals showing no evidence of evaluated commercial publishing relationships. 33.9% (43,630) were published in journals accepting advertising and reprint fees; 31.7% (40,887) in journals owned by large publishing firms; 1.2% (1,589) in journals accepting reprint fees only; and 2.5% (3,235) in journals accepting only advertising fees. Journals with commercial relationships were more likely to publish articles with aCOI (9.2% (92/1000) vs. 6.4% (64/1000), p = 0.024). In the multivariate analysis, only a journal's acceptance of reprint fees served as a significant predictor (OR = 2.81 at 95% CI, 1.5 to 8.6). Shared control estimation was used to evaluate the relationships between commercial publishing practices and aCOI frequency in total and by type. BCa-corrected mean difference effect sizes ranged from -1.0 to 6.1, and confirm findings indicating that accepting reprint fees may constitute the most significant commercial bias. The findings indicate that concerns over the influence of industry advertising in medical journals may be overstated, and that accepting fees for reprints may constitute the largest risk of bias for editorial decision-making.
    DOI:  https://doi.org/10.1371/journal.pone.0236166
  26. Front Immunol. 2020 ;11 1187
    Wang Y, Zhao N, Zhang X, Li Z, Liang Z, Yang J, Liu X, Wu Y, Chen K, Gao Y, Yin Z, Lin X, Zhou H, Tian D, Cao Y, Hao J.
      The butyrophilins (BTNs) represent a unique family of immunoglobulin. They were considered to be involved in milk lactation after their discovery in 1981. With the development of research, an increasing number of research revealed that BTNs play important roles in immune regulation [1992-2019]. Our research aimed to summarize the BTN research status and their relationship with lung cancers and breast cancers by bibliometrics and bioinformatics methods. Our results indicate that the researches on immune-regulatory functions of BTNs gradually developed from 1992 to 2006, whereas they increased quickly after 2007. There are international cooperations among 56 countries, of which the United States is the most active one with the highest number of studies as well as highest citations. By coauthorship and cocitation analysis, we showed that Adrian Hayday, who is active in γδ T-cell field, was an active author in BTN publications with average year of 2015 and led a subfield. By keywords co-occurrence analysis, we found that γδ T cell, which is an important cancer immune regulator, is one important hotspot. Finally, we found that several BTN members' expression levels were significantly correlated with prognosis of lung cancer and breast cancer patients. Thus, these BTNs might play immune regulatory effects and could serve as potential biomarkers for cancer.
    Keywords:  VOSviewer; bibliometrics; breast cancer; butyrophilin; lung cancer; γδ T cells
    DOI:  https://doi.org/10.3389/fimmu.2020.01187
  27. World Neurosurg. 2020 Jul;pii: S1878-8750(20)30709-9. [Epub ahead of print]139 676-687
    Ho YS.
      
    DOI:  https://doi.org/10.1016/j.wneu.2020.04.012
  28. Zhonghua Wei Zhong Bing Ji Jiu Yi Xue. 2020 Jun;32(6): 671-676
    Chen H, Huang X, Wei F, Li M, Liu L, Yang Z, Chen S, Chen K.
      OBJECTIVE: To analyze the research hotspot and frontier of severe coronavirus disease 2019 (COVID-19) in China and abroad.METHODS: The CiteSpace software was used to visually analyze the relevant research of severe COVID-19 published by CNKI and Web of Science databases from January 30th to April 20th in 2020. The analysis content included the author of the literature, the publishing institutions, and high-frequency keywords.
    RESULTS: There were 389 Chinese literatures and 59 English literatures included. Analysis using CiteSpace software showed that there were four large teams in China currently concerning about the research on severe COVID-19. The co-authoring of each team was relatively close, but the teams were lack of cooperation. The main issuing institutions were affiliated hospitals of colleges and universities, but colleges and enterprises had less participation. The authors of English-language publications mainly had five research teams, some of whom had co-authored relationships. The country with the most enormous volume of English-language publications was China, followed by the United States and Canada. The Chinese keyword co-occurrence, clustering and highlighted words analysis showed that the main research areas of severe COVID-19 included clinical features, traditional Chinese medicine treatment, medical imaging, integrated traditional Chinese and Western medicine treatment and so on; nucleic acid detection, clinical features and diagnosis, plague theory and etiology mechanism, traditional Chinese medicine and integrated Chinese and Western medicine treatment, severe COVID-19 combined with diabetes and prognosis research will become future research trends; keyword cluster analysis showed that severe COVID-19, combined chronic underlying diseases, CT imaging characteristics will also become new trends in the field of research. Co-occurrence analysis of keywords in English literatures showed that the main research areas of severe COVID-19 included the names of novel coronavirus, pandemic diseases, infectious diseases, medical supplies distribution, and indicators related to myocardial damage.
    CONCLUSIONS: Researchers in China and abroad have different concerns about severe COVID-19. Domestic research focuses on the diagnosis and treatment of severe cases, while foreign countries attach importance to epidemic response and prevention.
    DOI:  https://doi.org/10.3760/cma.j.cn121430-20200514-00384