bims-evares Biomed News
on Evaluation of research
Issue of 2019‒11‒24
twenty-four papers selected by
Thomas Krichel
Open Library Society

  1. J Am Dent Assoc. 2019 Nov 18. pii: S0002-8177(19)30606-3. [Epub ahead of print]
    Roszhart JI, Kumar SS, Allareddy V, Childs CA, Elangovan S.
      BACKGROUND: Spin in randomized controlled trial (RCT) abstracts can misguide clinicians. In this cross-sectional analysis, the authors assessed the prevalence of spin in RCT abstracts and explored the factors potentially influencing it.METHODS: In this cross-sectional analysis, the authors conducted a systematic search in top 10 dental journals based on Eigenfactor score and selected RCTs published in 2015 with statistically nonsignificant primary outcomes. The dentistry disciplines covered in these journals include general dentistry, dental research, oral implantology, endodontics, oral surgery, periodontology, and oral oncology. In these RCT abstracts, the authors assessed the prevalence of 3 different categories of spin and factors that could influence its presence using the t test and χ2 test.
    RESULTS: Spin assessment performed in the included 75 RCTs revealed the existence of spin in 23 abstracts (30.7%). Associations between the presence of spin in abstracts and the variables international collaborations, commercial support type, number of treatment arms, and journal impact factor were found to be statistically nonsignificant (P ≥ .05).
    CONCLUSIONS: Approximately one-third of the 75 RCT abstracts published in high-impact dental journals in 2015 with nonsignificant outcomes presented with some form of spin, irrespective of funding type and journal impact factor.
    PRACTICAL IMPLICATIONS: Clinicians should be aware of the potential existence of spin in abstracts and be diligent in reading and appraising the full trial before incorporating its recommendations in clinical practice.
    Keywords:  Evidence-based dentistry; abstract; clinical decision-making; randomized controlled trial; spin
  2. J Clin Periodontol. 2019 Nov 20.
    Garcovich D, Ausina Marquez V, Adobes Martin M.
      AIM: To assess the online attention to research in the field of Periodontology. To assess the correlation between the Altmetric Attention Score (AAS) and the citations count in Web of Science (WOS), Scopus and Dimensions.MATERIAL AND METHODS: The articles were identified by a search performed through the Dimensions Free App. The search included the six journals related to periodontology listed in the Journal Citation Report (JCR) in the year 2017. The 200 articles with the highest AAS were collected and screened for data related to publication, authorship, and research. Citations were harvested from WOS, Scopus and Dimensions.
    RESULTS: The Journal of Clinical Periodontology was the most prevalent publication accounting for the 51,5% of the published items followed by the Journal of Periodontology that published the 34,5% of the 200 articles with the highest AAS. 65% of these articles were published between 2013 and 2018. The mean AAS was 33,81 being Tweets and news outlets the most frequent Altmetric resources. Systematic reviews were the most prevalent study design. The correlation between the AAS and the citations in WOS, Dimensions and Scopus was poor. A strong correlation exists between the citations in WOS, Dimensions and Scopus.
    CONCLUSIONS: Online attention to periodontal research is high. Systemic interaction studies had a significantly higher visibility. The Classic citations count in combination with the AAS, can offer a more comprehensive insight into research by highlighting what is valuable for the researcher and for the lay persons. The online profile of journals should be edited to facilitate spread of research information in non-scholar audiences.
    Keywords:  Altmetric; Bibliometrics; Citation analysis; Dimensions; Periodontology; Scopus
  3. PLoS One. 2019 ;14(11): e0225276
    Wang M, Zhang J, Jiao S, Zhang T.
      The effective evaluation of the impact of a scholarly article is a significant endeavor; for this reason, it has garnered attention. From the perspective of knowledge flow, this paper extracted various knowledge flow patterns concealed in articles citation counts to describe the citation impact of the articles. First, the intensity characteristic of knowledge flow was investigated to distinguish the different citation vitality of articles. Second, the knowledge diffusion capacity was examined to differentiate the size of the scope of articles' influences on the academic environment. Finally, the knowledge transfer capacity was discussed to investigate the support degree of articles on the follow-up research. Experimental results show that articles got more citations recently have a higher knowledge flow intensity. The articles have various impacts on the academic environment and have different supporting effects on the follow-up research, representing the differences in their knowledge diffusion and knowledge transfer capabilities. Compared with the single quantitative index of citation frequency, these knowledge flow patterns can carefully explore the citation value of articles. By integrating the three knowledge flow patterns to examine the total citation impact of articles, we found that the articles exhibit distinct value of citation impact even if they were published in the same field, in the same year, and with similar citation frequencies.
  4. Aesthet Surg J. 2019 Nov 20. pii: sjz336. [Epub ahead of print]
    Asaad M, Kallarackal AP, Meaike J, Rajesh A, de Azevedo RU, Tran NV.
      BACKGROUND: Citation skew refers to the unequal distribution of citations to articles published in a particular journal.OBJECTIVES: We aimed to assess for the existence of citation skew within plastic surgery journals and to determine whether the journal impact factor (JIF) is an accurate indicator of the citation rates of individual articles.
    METHODS: We identified all journals within the field of plastic and reconstructive surgery using the Journal Citation Report (JCR). The number of citations in 2018 for all individual articles published in 2016 and 2017 was abstracted.
    RESULTS: A total of 33 plastic surgery journals were identified comprising 9,823 articles. The citation distribution showed right skew with the majority of articles having either 0 or 1 citation (40% and 25%, respectively). A total of 3,374 (34%) articles achieved citation rates similar to or higher than their journal's IF while 66% of articles failed to achieve a citation rate equal to the JIF. Review articles achieved higher citation rates (median, 2) when compared to original articles (median,1); p<0.0001. Overall, 50% of articles contributed to 93.7% of citations and 12.6% of articles contributed to 50% of citations. A weak positive correlation was found between the number of citations and the JIF (r=0.327, p<0.0001).
    CONCLUSIONS: Citation skew exists within plastic surgery journals similar to other fields of biomedical science. Most articles did not achieve citation rates equal the JIF with a small percentage of articles having a disproportionate influence on citations and the JIF. Therefore, the JIF should not be used to assess the quality and impact of individual scientific work.
  5. Eval Program Plann. 2019 Nov 11. pii: S0149-7189(19)30425-2. [Epub ahead of print]79 101752
    Bührer S, Frietsch R.
      This article examines whether two of the major German flagship programmes to increase the participation of female researchers in the German science system, the "Women Professorship Programme" and the "Pact for Research and Innovation", have actually increased the number of women, especially in leadership positions. In a second step, we analyse whether such an assumed increase influences the publication patterns of authors with German affiliation. This article is based on literature and desk research as well as bibliometric analysis using Scopus. The most important result is that the number of women in research has indeed increased significantly in recent years and that, accordingly, more women are the (co)authors of scientific publications. In particular, it can be seen that quality indicators such as citations and excellence rates are high for female authors. This enables us to show that more women in the science system not only bring about a "gain in justice", but also a concrete scientific benefit.
    Keywords:  Bibliometrics; Gender equality; Research and innovation policy
  6. J Vet Med Educ. 2019 Nov 15. e0618072r1
    Kustritz MVR, Nault AJ.
      The natural progression of observation through inquiry to scholarship that is common to scientists is not well demonstrated among veterinary educators. One possible institutional barrier to promotion of education-related research among faculty is lack of a mechanism to demonstrate productivity and impact of scholarship of teaching and learning (SoTL) and hypothesis-driven research related to education. The h-index is one measure of research productivity. The h-index was calculated for individuals at one veterinary college and was compared between select North American schools of veterinary medicine to demonstrate baseline values for this kind of scholarship in this discipline. Use of standard search techniques using Google Scholar for citation count generated a slightly lower score than a more labor-intensive search and review of curricula vitae. The h-index across institutions ranged from 1 to 11, with a mean score of 6.0 (SD = 2.8). Five hundred forty-four education-related articles were published in 45 different journals; the primary sites of publication were the Journal of Veterinary Medical Education (JVME) and the Journal of the American Veterinary Medical Association.
    Keywords:  faculty development; h-index; scholarship of teaching and learning (SoTL); veterinary education
  7. PLoS One. 2019 ;14(11): e0225360
    Koelblinger D, Zimmermann G, Weineck SB, Kiesslich T.
      Analyses of the Journal Impact Factor (JIF) have grown to be a major topic in scientometric literature. Despite widespread and justified critique concerning the JIF and its application, the size of a journal as a predictor for its longitudinal variability-or stability-on a long-term level has not yet comprehensively been analyzed. This study aims to provide robust evidence for an association between JIF variability and the size of journals, expressed by the number of published articles (citable items). For this purpose, the complete set of journals included in the Incite Journal Citation Reports (JCR) with an JIF in the 2017 JCR edition (n = 8750) were analyzed for the association between journal size and longitudinal JIF dynamics. Our results, based on n = 4792 journals with a complete JIF data set over the timespan of 12 annual JIF changes show that larger journals publishing more citable items experience smaller annual changes of the JIF than smaller journals, yet with this association being reversed for journals with a very large number of total cites. Consequently and in accordance with the genuine intention of the JIF to serve as a basis for decisions on journal subscriptions, evaluation of current changes of the JIF have to be accompanied by consideration of the journal's size in order to be accurate and sensible.
  8. Ann Thorac Surg. 2019 Nov 19. pii: S0003-4975(19)31704-7. [Epub ahead of print]
    Coret M, Rok M, Newman J, Deonarain D, Agzarian J, Finley C, Shargall Y, Malik PR, Patel Y, Hanna WC.
      BACKGROUND: Academic surgeons are encouraged to promote their work on social media. We hypothesized that thoracic surgeons who are active on Twitter have a higher research citation index (h-index) than their counterparts who are not.METHODS: Thoracic surgeons on in Canada and the United States were queried for profiles with an h-index on Google Scholar (GS) and/or Research Gate (RG) in July 2018. Surgeons were categorized by whether they possessed a Twitter account (T+) or not (T-), and h-index values were compared. Within the T+ cohort, a multivariate regression model was used to identify independent predictors of increased h-index among variables related to Twitter activity.
    RESULTS: Of 3,741 surgeons queried, 19.3% (722) had a known h-index. The mean (SD) h-index for the entire cohort was 14.54 (15.73). The median (range) h-index was 10 (0-121), and the 75th percentile h-index was 20. T+ surgeons had a median (range) h-index of 10 (0-66), and T- surgeons had a median (range) h-index of 10 (0-72, p=0.25). The 75th percentile h-index for T+ surgeons was 23, compared to 20 for T- surgeons (p=0.24). For T+ surgeons, the regression model identified the number of followers (p=0.029), the number of people followed (p=0.048), and the frequency of tweeting (p=0.046) as independent predictors of a higher h-index.
    CONCLUSIONS: The median h-index for an academic thoracic surgeon in Canada and the United States is 10. Surgeons who engage in Twitter activity are more likely to have their research cited by others.
  9. World J Clin Cases. 2019 Nov 06. 7(21): 3505-3516
    Yang KL, Lu CC, Sun Y, Cai YT, Wang B, Shang Y, Tian JH.
      BACKGROUND: As a significantly important part of clinical practice, the professional nursing process can be advanced in many ways. Despite the fact that case reports are regarded to be of a lower quality grade in the hierarchy of evidence, one of the principles of evidence-based medicine is that decision-making should be based on a systematic summary of evidence. However, the evidence on the reporting characteristics of case reports in the nursing field is deficient.AIM: To use the CARE guidelines to assess reporting quality and factors influencing the quality of case reports in the nursing field.
    METHODS: Nursing science citation indexed (SCI-indexed) journals were identified from the professional website. Each of the identified journals was searched on their website for articles published before December 2017. Twenty-one sub-items on the CARE checklist were recorded as "YES", "PARTLY", or "NO" according to information reported by the included studies. The responses were assigned corresponding scores of 1, 0.5, and 0, respectively. The overall score was the sum of the 21 sub-items and was defined as "high" (more than 15), "medium" (10.5 to 14.5), and "low" (less than 10). The means, standard deviations, odds ratios (OR), and the associated 95% confidence interval (CI) were determined using Stata 12.0 software.
    RESULTS: Ultimately, 184 case reports from 16 SCI-indexed journals were identified, with overall scores ranging from 6.5 to 18 (mean = 13.6 ± 2.3). Of the included case reports, 10.3% were regarded low-quality, 52.7% were considered middle-quality, and 37% were regarded high-quality. There were statistical differences in the mean overall scores of the included case reports with funding versus those without funding (14.2 ± 1.7 vs 13.6 ± 2.4, respectively; P = 0.4456) and journal impact factor < 1.8 versus impact factor ≥ 1.8 (13.3 ± 2.3 vs 13.6 ± 2.4, respectively; P = 0.4977). Five items from the CARE guidelines, 5a (Patient), 6 (Clinical findings), 8c (Diagnostic reasoning), 9 (Therapeutic intervention), and 11d (The main take-away lessons) were well-reported (Reporting rate more than 90%) in most of the included case reports. However, only three items, 2 (Keywords, OR = 0.42, 95%CI: 0.19-0.92, P = 0.03), 4 (Introduction, OR = 0.35, 95%CI: 0.15-0.83, P = 0.017), and 11b (The relevant medical literature, OR = 0.19, 95%CI: 0.06-0.56, P = 0.003) were considered better-reported after the CARE guidelines published in 2013.
    CONCLUSION: The reporting quality of case reports in the nursing field apparently has not improved since the publication of the CARE guidelines.
    Keywords:  Case report guidelines; Case reports; Nursing; Reporting quality; Science citation indexed journals; Systematic review
  10. J Med Internet Res. 2019 Nov 18. 21(11): e14672
    Xing Z, Yu F, Du J, Walker JS, Paulson CB, Mani NS, Song L.
      BACKGROUND: Conversational interfaces (CIs) in different modalities have been developed for health purposes, such as health behavioral intervention, patient self-management, and clinical decision support. Despite growing research evidence supporting CIs' potential, CI-related research is still in its infancy. There is a lack of systematic investigation that goes beyond publication review and presents the state of the art from perspectives of funding agencies, academia, and industry by incorporating CI-related public funding and patent activities.OBJECTIVE: This study aimed to use data systematically extracted from multiple sources (ie, grant, publication, and patent databases) to investigate the development, research, and fund application of health-related CIs and associated stakeholders (ie, countries, organizations, and collaborators).
    METHODS: A multifaceted search query was executed to retrieve records from 9 databases. Bibliometric analysis, social network analysis, and term co-occurrence analysis were conducted on the screened records.
    RESULTS: This review included 42 funded projects, 428 research publications, and 162 patents. The total dollar amount of grants awarded was US $30,297,932, of which US $13,513,473 was awarded by US funding agencies and US $16,784,459 was funded by the Europe Commission. The top 3 funding agencies in the United States were the National Science Foundation, National Institutes of Health, and Agency for Healthcare Research and Quality. Boston Medical Center was awarded the largest combined grant size (US $2,246,437) for 4 projects. The authors of the publications were from 58 countries and 566 organizations; the top 3 most productive organizations were Northeastern University (United States), Universiti Teknologi MARA (Malaysia), and the French National Center for Scientific Research (CNRS; France). US researchers produced 114 publications. Although 82.0% (464/566) of the organizations engaged in interorganizational collaboration, 2 organizational research-collaboration clusters were observed with Northeastern University and CNRS as the central nodes. About 112 organizations from the United States and China filed 87.7% patents. IBM filed most patents (N=17). Only 5 patents were co-owned by different organizations, and there was no across-country collaboration on patenting activity. The terms patient, child, elderly, and robot were frequently discussed in the 3 record types. The terms related to mental and chronic issues were discussed mainly in grants and publications. The terms regarding multimodal interactions were widely mentioned as users' communication modes with CIs in the identified records.
    CONCLUSIONS: Our findings provided an overview of the countries, organizations, and topic terms in funded projects, as well as the authorship, collaboration, content, and related information of research publications and patents. There is a lack of broad cross-sector partnerships among grant agencies, academia, and industry, particularly in the United States. Our results suggest a need to improve collaboration among public and private sectors and health care organizations in research and patent activities.
    Keywords:  artifical intelligence; bibliometrics; chatbots; conversational agents; conversational interfaces; grants; healthcare; patents; publications; social network
  11. BMJ Glob Health. 2019 ;4(5): e001853
    Hedt-Gauthier BL, Jeufack HM, Neufeld NH, Alem A, Sauer S, Odhiambo J, Boum Y, Shuchman M, Volmink J.
      Background: Collaborations are often a cornerstone of global health research. Power dynamics can shape if and how local researchers are included in manuscripts. This article investigates how international collaborations affect the representation of local authors, overall and in first and last author positions, in African health research.Methods: We extracted papers on 'health' in sub-Saharan Africa indexed in PubMed and published between 2014 and 2016. The author's affiliation was used to classify the individual as from the country of the paper's focus, from another African country, from Europe, from the USA/Canada or from another locale. Authors classified as from the USA/Canada were further subclassified if the author was from a top US university. In primary analyses, individuals with multiple affiliations were presumed to be from a high-income country if they contained any affiliation from a high-income country. In sensitivity analyses, these individuals were presumed to be from an African country if they contained any affiliation an African country. Differences in paper characteristics and representation of local coauthors are compared by collaborative type using χ² tests.
    Results: Of the 7100 articles identified, 68.3% included collaborators from the USA, Canada, Europe and/or another African country. 54.0% of all 43 429 authors and 52.9% of 7100 first authors were from the country of the paper's focus. Representation dropped if any collaborators were from USA, Canada or Europe with the lowest representation for collaborators from top US universities-for these papers, 41.3% of all authors and 23.0% of first authors were from country of paper's focus. Local representation was highest with collaborators from another African country. 13.5% of all papers had no local coauthors.
    Discussion: Individuals, institutions and funders from high-income countries should challenge persistent power differentials in global health research. South-South collaborations can help African researchers expand technical expertise while maintaining presence on the resulting research.
    Keywords:  academic collaboration; decolonizing global health; global health; research equity
  12. Nature. 2019 Nov;575(7783): S25
    Crew B.
    Keywords:  Institutions; Politics; Publishing; Research management
  13. BMJ Glob Health. 2019 ;4(5): e001855
    Mbaye R, Gebeyehu R, Hossmann S, Mbarga N, Bih-Neh E, Eteki L, Thelma OA, Oyerinde A, Kiti G, Mburu Y, Haberer J, Siedner M, Okeke I, Boum Y.
      Introduction: Africa contributes little to the biomedical literature despite its high burden of infectious diseases. Global health research partnerships aimed at addressing Africa-endemic disease may be polarised. Therefore, we assessed the contribution of researchers in Africa to research on six infectious diseases.Methods: We reviewed publications on HIV and malaria (2013-2016), tuberculosis (2014-2016), salmonellosis, Ebola haemorrhagic fever and Buruli ulcer disease (1980-2016) conducted in Africa and indexed in the PubMed database using Preferred Reporting Items for Systematic Reviews and Meta-Analyses protocol. Papers reporting original research done in Africa with at least one laboratory test performed on biological samples were included. We studied African author proportion and placement per study type, disease, funding, study country and lingua franca.
    Results: We included 1182 of 2871 retrieved articles that met the inclusion criteria. Of these, 1109 (93.2%) had at least one Africa-based author, 552 (49.8%) had an African first author and 41.3% (n=458) an African last author. Papers on salmonellosis and tuberculosis had a higher proportion of African last authors (p<0.001) compared with the other diseases. Most of African first and last authors had an affiliation from an Anglophone country. HIV, malaria, tuberculosis and Ebola had the most extramurally funded studies (≥70%), but less than 10% of the acknowledged funding was from an African funder.
    Conclusion: African researchers are under-represented in first and last authorship positions in papers published from research done in Africa. This calls for greater investment in capacity building and equitable research partnerships at every level of the global health community.
    Keywords:  HIV; buruli ulcer; clinical trial; epidemiology; tuberculosis
  14. J Environ Manage. 2019 Nov 15. pii: S0301-4797(19)31518-X. [Epub ahead of print]254 109800
    Davarazar M, Mostafaie A, Jahanianfard D, Davarazar P, Ghiasi SAB, Gorchich M, Nemati B, Kamali M, Aminabhavi TM.
      Treatment of highly polluted pharmaceutical effluents is a major challenge all over the world for technical and economic considerations. In this study, scientometric study is performed on the application of various methods for the treatment of pharmaceutical effluents to explore further developments. In this regard, a total of 1964 documents were retrieved from the Web of Science (WoS) database using a set of relevant keywords to cover all published documents. The extracted documents were subjected to scientometric study including the contributed authors, publications, citations received, contributing countries and institutions as well as the subject categories. From the data retrieved, the status of scientific knowledge on the subject history and current trends were identified and scientific gaps were critically discussed. Publications in this area started to appear since the sixties and were considerably promoted around the beginning of 2000s. Scientific publications of years 1960-2018 followed sigmoidal trend. It was found that leading countries are China and the United States in terms of scientific output on treatment technologies for pharmaceutical effluents. Among the active journals published, "Water Research" has received the most citations. A detailed discussion on the science and developments in this field is provided including the potential applications of scientometry.
    Keywords:  Environmental decontamination; Pharmaceutical effluents; Scientometry; Treatment technologies
  15. JAMA Netw Open. 2019 Nov 01. 2(11): e1915989
    Grubbs JC, Glass RI, Kilmarx PH.
      Importance: The US National Institutes of Health (NIH) is the largest funder of biomedical and behavioral research in the world. International collaborative research-a subset of NIH's portfolio-is critical to furthering the agency's health research mission.Objective: To quantify the extent of the NIH's international collaborations and the relative importance of this research through the lens of publications.
    Design, Setting, and Participants: This cross-sectional study used bibliometric data from the Web of Science database to analyze trends in the growth of NIH-funded publications from January 1, 2009, to December 31, 2017, and examined their importance using national affiliations of all coauthors listed, h indices, and citation impact scores. All countries with coauthor affiliations in NIH-funded publications during the study period were included. Data were analyzed from October 22 through November 16, 2018.
    Exposures: Country affiliations of coauthors' institutions in NIH-funded publications indexed in the Web of Science database from 2009 to 2017.
    Main Outcomes and Measures: Trends in the number of NIH-supported publications with non-US coauthors during a 9-year period and their relative importance assessed by h index per country and category-normalized citation impact (CNCI) for groups of country affiliations in 2017.
    Results: From 2009 to 2017, the annual count of NIH-funded publications increased 46.2% from 67 041 to 98 002. This increase was driven in part by an increase in publications with a non-US author alone or as a collaborator with a US author compared with those exclusively with US authors, reflected by an increase in the percentage of publications with non-US coauthors from 28.3% to 34.8%. Moreover, in 2017, publications coauthored by US-affiliated and non-US-affiliated investigators had a higher mean CNCI (1.99) than those whose authors were only US affiliated (1.54) or non-US affiliated (1.35). China became the most frequent publishing partner, with 6982 coauthored publications and the greatest increase over time among non-US countries.
    Conclusions and Relevance: In a 9-year period when the NIH budget remained relatively unchanged, an increase in the number of publications occurred with a growing trend toward more international collaborations of authorship; these publications also had a higher CNCI than publications with only US or only non-US authors. The findings suggest that international collaboration is a vital and growing component of the NIH's research output and likely reflects increased globalization of biomedical research.
  16. J Forensic Leg Med. 2019 Nov 09. pii: S1752-928X(19)30122-2. [Epub ahead of print]69 101885
    Demir E, Yaşar E, Özkoçak V, Yıldırım E.
      The purpose of this study is to make a holistic summary of the articles published in the field of Legal Medicine/Forensic Science through bibliometric methods, determine the top cited publications in the field, and to determine the most active journals and especially trend topics. The articles published in the field of Legal Medicine between the years 1975 and 2018 were downloaded from the Web of Science index and were analyzed using bibliometric methods. The correlations between the number of publications of the countries and the Gross Domestic Product (GDP), and the Gross Domestic Product per capita (GDP PPP) values was analyzed using the Spearman's correlation coefficient. The number of articles to be published in the field of Legal Medicine between the years 2019 and 2022 was estimated with linear regression analysis. The results showed that there were totally 38845 articles published in the field of Legal Medicine. Regression analysis results indicate that it will exceed 2500 publications after 2022. The most productive countries in the field of Legal Medicine were the USA (12.448, 32.045%). A high correlation was found between legal medicine publication productivity and GDP and GDP PPP (r = 0.726, p < 0.001; r = 0.703, p < 0.001). As for the collaboration between countries, analysis results showed that the network web indicated the most important factor as the geographical location. This study will provide important information to a forensic scientist (a doctor, academic, and practitioner).
    Keywords:  Bibliometrics; Forensic science; Legal medicine; Scientometrics
  17. Orthop J Sports Med. 2019 Nov;7(11): 2325967119880505
    Hankins DA, Fletcher IE, Prieto F, Ockuly AC, Myers OB, Treme GP, Veitch AJ, Wascher DC, Schenck RC, Richter DL.
      Background: Many studies have evaluated the management of knee dislocations (KDs) and multiligamentous knee injuries (MLKIs). However, no study to date has analyzed the quality of the most cited articles in this literature.Hypothesis: There is a positive correlation between the number of article citations in the KD and MLKI literature and their methodologic quality.
    Study Design: Systematic review.
    Methods: The Web of Science online database was searched to identify the top 50 cited articles in KD and MLKI care. Demographic data were recorded for each study. The Modified Coleman Methodology Score (MCMS) and the Methodological Index for Non-randomized Studies (MINORS) were used to analyze the methodological quality of each article. Spearman correlation coefficients (r s) were then calculated.
    Results: The articles identified were published between 1958 and 2015 in a wide variety of peer-reviewed journals (n = 16). The majority of study level of evidence (LOE) was of low quality (level 5, 16%; level 4, 54%; level 3, 16%; level 2, 14%). There were no studies of level 1 evidence. The mean MCMS and MINORS scores were 29.0 (SD, 19.1; range, 3-72) and 6.1 (SD, 3.7; range, 0-14), respectively. No significant correlation was identified between the number of citations and the publication year, LOE, MCMS, or MINORS (r s = 0.123 [P = .396]; r s = 0.125 [P = .389]; r s = 0.182 [P = .204]; and r s = 0.175 [P = .224], respectively). Positive correlations were observed between improved MCMS and MINORS scores and more recent year of publication (r s = 0.43 [P = .002]; r s = 0.32 [P = .022]) as well as improved study LOE (r s = 0.65 [P < .001]; r s = 0.67 [P < .001]).
    Conclusion: The top 50 cited articles on KD and MLKI care consisted of low LOE and methodological quality, with no existing level 1 articles. There was no significant correlation between the number of citations and publication year, LOE, or study methodological quality. Positive correlations were observed between later publication date and improved methodological quality.
    Keywords:  knee dislocation; knee ligaments; multiple ligament injuries; quality of evidence
  18. Arch Bronconeumol. 2019 Nov 18. pii: S0300-2896(19)30395-3. [Epub ahead of print]
    López-Padilla D, García-Río F, Alonso-Arroyo A, Pérez Gallán M, Puente Maestú L, Segrelles-Calvo G, de Granda-Orive JI.
      INTRODUCTION: Alternative metrics or altmetrics are non-traditional measurements of scientific production that reflect a publication's influence in social networks and similar channels of dissemination. The aim of this study was to analyze the media impact of Archivos de Bronconeumología according to 2 altmetric aggregators and website visits.METHODS: This was an observational study of the original articles and review and consensus articles published in Archivos de Bronconeumología during the period 2014-2018. Data from the PlumX Metrics and Altmetric aggregators and visits to the Archivos de Bronconeumología website were analyzed. Five comparisons were made: by specialty area, by funding received, by number of participating centers, by document type, and by topic. In a subanalysis, altmetrics were correlated with the conventional citation system.
    RESULTS: We analyzed 273 papers, of which 186 were original articles (68.1%). The papers that achieved greater media impact in the 2 aggregators analyzed, and in terms of website visits, were pulmonology papers and review and consensus articles. The mean Altmetric Attention Score was 1.9±4.4 (range 0-59), which is above average for the date of publication of the paper. A statistically significant weak to moderate correlation was identified between altmetrics and conventional citations.
    CONCLUSIONS: Review articles, consensus documents, and pulmonology papers had a greater media impact. Mean Altmetric Attention Score was higher than the average based on the date of publication. A weak to moderate correlation between altmetrics and conventional citations was identified.
    Keywords:  Altmetrics; Factor de impacto; Impact factor; Redes sociales; Social networks
  19. Adv Dent Res. 2019 Dec;30(3): 85-94
    D'Silva NJ, Herren SS, Mina M, Bellile E.
      The International Association for Dental Research (IADR) Distinguished Scientist Awards are prestigious recognitions of outstanding scientific accomplishments in various areas of dental, oral, and craniofacial research, which correspond to several of the IADR Scientific Groups and Networks. These 17 awards were established over a period of 60 y. The objective of this report is to highlight women recipients of IADR Distinguished Scientist Awards. Additionally, we report the distribution of awards to women scientists over time and compare the number of women nominees, awardees, and gender distribution of the membership. Information about the awards was obtained from the IADR member database and press releases. Information collected included name of the award, year received, and the awardee's name, institution, and position held at the time of the award. For the last 14 y, the time span for which reliable information was available, the gender distribution of the membership of the IADR was also retrieved. Overall, only 13% of the awardees have been women; even in the last 20 y, <20% have been women. In the last 14 y, the number of women awardees paralleled the number of nominees for each award. However, the proportion of women nominees was significantly lower than the female membership each year (P < 0.001). With the exception of 1 y, the percentage of women awardees trailed the women membership of the IADR. In the past 4 y, women represented 12% to 18% of the awardees, whereas they composed 41% to 46% of the IADR's membership. Given the benefits of prestigious recognitions on recruitment and retention of faculty and on attracting new research trainees into a discipline, it is important that policies be implemented to increase the proportion of women nominees for awards to appropriately recognize the efforts of remarkable women scientists.
    Keywords:  STEM; dental, oral, and craniofacial research; recognition; scholarly awards; women nominees; women scientists
  20. Am J Hosp Palliat Care. 2019 Nov 21. 1049909119886305
    Liu CJ, Yeh TC, Hsieh MH, Woung LC, Huang SJ, Chen MC, Liu CK.
      BACKGROUND: In recent decades, issues related to end-of-life care and advance care planning (ACP) have attracted popular attention. Advance care planning has been broadly discussed as one of the potential solutions to protect a patient's rights, autonomy, and dignity at the end of life. To better understand publishing on this topic, we conducted this study to demonstrate the worldwide research productivity, trends, and citations of ACP in the past 3 decades by bibliometric analysis.METHODS: Articles published on ACP were retrieved from the Web of Science Core Collection database, and the subject terms included "advance directive," or "advance care planning."
    RESULTS: Overall, 2126 publications on ACP were retrieved until January 22, 2019. North America, Western Europe, and Australia were the most productive regions. The top 15 countries published 95.9% of the total number of articles. The United States accounted for approximately three-fifths (61.0%) of all publications. When adjusted for population size, Australia had the highest number of articles per million persons (6.64), followed by the Netherlands (6.14) and Belgium (4.61). The most productive authors were Sudore (n = 37), Deliens (n = 29), and Green (n = 24).
    CONCLUSIONS: The current study revealed that research in terms of publications on ACP has rapidly increased over the past 3 decades. Developed countries, especially the United States, were more concerned with the ACP research field than developing countries were.
    Keywords:  advance care planning; advance directive; bibliometric analysis; citation analysis; palliative care; worldwide trend
  21. J Dent Res. 2019 Dec;98(13): 1425-1436
    Ahmad P, Alam MK, Jakubovics NS, Schwendicke F, Asif JA.
      Since its inception in 1919, the Journal of Dental Research has continually published high-quality articles that span the breadth of research topics relevant to dentistry, oral surgery, and medicine. As part of the journal's centennial celebration, we conducted an electronic search on Scopus to identify and analyze the top 100 most cited articles from 1919 to 2018. Since Scopus does not capture older citations, we conducted an additional analysis by Google Scholar to identify key articles published in the first 50 y of the journal. Based on Scopus, the articles were ranked in descending order per their citation counts. The citation counts of the 100 most cited articles varied from 262 to 1,503. The year in which the largest number of top 100 articles were published was 2004 (n = 6). Within the top 100, the majority of articles originated from the United States (n = 52). Research Reports-Biomaterials & Bioengineering was the most frequent category of cited articles (n = 35). There was no significant association between total citation count and time since publication (correlation coefficient = -0.051, P = 0.656). However, there was a significant negative association of citation density (correlation coefficient = -0.610, P < 0.01) with time since publication. Our analyses demonstrate the broad reach of the journal and the dynamics in citation patterns and research agenda over its 100-y history. There is considerable evidence of the high variance in research output, when measured via citations, across the globe. Moreover, it remains unclear how patients' priorities and dental health care needs are aligned with the perceived influence of single research pieces identified by our search. Our findings may help to inspire future research in tackling these inequalities and highlight the need for conceptualizing research priorities.
    Keywords:  benchmarking; bibliometrics; historical article; history of dentistry; metrics; publications
  22. J Ethnopharmacol. 2019 Nov 18. pii: S0378-8741(19)31122-5. [Epub ahead of print] 112414
    Kan Yeung AW, Heinrich M, Kijjoa A, Tzvetkov NT, Atanasov AG.
      ETHNOPHARMACOLOGICAL RELEVANCE: The research into bioactive natural products originating from medicinal plants, fungi and other organisms has a long history, accumulating abundant and diverse publications. However no quantitative literature analysis has been conducted.AIM OF THE STUDY: Here we analyze the bibliometric data of ethnopharmacology literature and relate the semantic content to the publication and citation data so that the major research themes, contributors, and journals of different time periods could be identified and evaluated.
    MATERIALS AND METHODS: Web of Science (WoS) was searched to identify relevant publications. The Analyze function of WoS and bibliometric software (VOSviewer) were utilized to perform the analyses.
    RESULTS: Until the end of November 2018, 59,576 publications -linked to 'ethnopharmacology' indexed by WoS, published since 1958 in more than 5,600 journals, and contributed by over 20,600 institutions located in more than 200 countries/regions, were identified. The papers were published under four dominating WoS categories, namely pharmacology/pharmacy (34.4%), plant sciences (28.6%), medicinal chemistry (25.3%), and integrative complementary medicine (20.6%). India (14.6%) and China (13.2%) were dominating the publication space. The United States and Brazil also had more than 8.0% contribution each. The rest of the top ten countries/regions were mainly from Asia. There were around ten-fold more original articles (84.6%) than reviews (8.4%).
    CONCLUSIONS: Ethnopharmacological research has a consistent focus on food and plant sciences, (bio)chemistry, complementary medicine and pharmacology, with a more limited scientific acceptance in the socio-cultural sciences. Dynamic global contributions have been shifting from developed countries to economically and scientifically emerging countries in Asia, South America and the Middle East. Research on recording medicinal plant species used by traditional medicine continues, but the evaluation of specific properties or treatment effects of extracts and compounds has increased enormously. Moreover increasing attention is paid to some widely distributed natural products, such as curcumin, quercetin, and rutin.
    Keywords:  Bibliometric analysis; Citation analysis; Ethnopharmacology; Medicinal plants; Traditional medicine; Web of science
  23. Environ Sci Pollut Res Int. 2019 Nov 19.
    Xing Y, Zhang H, Su W, Wang Q, Yu H, Wang J, Li R, Cai C, Ma Z.
      Facing the common treatment problems of dioxin whose major sources come from waste incineration and steel sintering, we handled a massive literature dataset from the Web of Science database and analyzed the research hotspot and development trend in this field in the past 40 years by bibliometric method. The result indicates that the field of dioxins generated from waste incineration and steel sintering has entered a stage of rapid development since 1990. China occupies a leading position in terms of comprehensive strength with the largest publications output as well as a greater influence in recent years. The most productive institutions and journals are Zhejiang University and Chemosphere, respectively. In addition, the most commonly used keywords in statistical analysis are "fly ash," "emission control," "risk assessment," "congener profile," "formation mechanisms," "sources," "catalysis," and "inhibition," which reflects the current main research direction in this field. The similarities and differences of dioxins generated in waste incineration and steel sintering are reviewed in this paper, which will provide guidance for the future research.
    Keywords:  Bibliometric analysis; Dioxin; Sintering process; Waste incineration
  24. J Int Med Res. 2019 Nov 19. 300060519885570
    Wu Q, Zheng R, Wang W, Qiu H, Huang X, Yang Q.
    Keywords:  Allergic rhinitis; bibliometric; citation analysis; immunity therapy; influential article; landmark study