bims-evares Biomed News
on Evaluation of research
Issue of 2019‒09‒15
twenty-two papers selected by
Thomas Krichel
Open Library Society


  1. Heliyon. 2019 Aug;5(8): e02219
    Tseng H, Small H.
      Quantitative analysis of knowledge content of a significant technological innovation is a novel approach to understand the scientific discovery process. Here we describe such an analysis applied to the invention of recombinant DNA technology in the early 1970's. Two focal papers are selected, i.e., Jackson et al., 1972 and Cohen et al., 1973. A knowledge framework called EApc is described to categorize knowledge types and their quantification. The focal papers, along with their reference lists, are used to determine the minimal scientific knowledge necessary for generating the notions central to each focal paper. Attempts are made to trace how each type of knowledge was generated by various research communities. The results are discussed in terms of their potential implications in measuring, evaluating, understanding and managing the scientific research process.
    Keywords:  Information science; Knowledge quantification; Molecular biology; Recombinant DNA,; Science of science; Scientometrics
    DOI:  https://doi.org/10.1016/j.heliyon.2019.e02219
  2. J Am Acad Dermatol. 2019 Sep 06. pii: S0190-9622(19)32684-2. [Epub ahead of print]
    Stephens MR, Barbieri J, Lipoff JB.
      
    Keywords:  academic careers; research productivity; residency applications
    DOI:  https://doi.org/10.1016/j.jaad.2019.08.076
  3. PLoS One. 2019 ;14(9): e0221212
    Baccini A, De Nicolao G, Petrovich E.
      It is several years since national research evaluation systems around the globe started making use of quantitative indicators to measure the performance of researchers. Nevertheless, the effects on these systems on the behavior of the evaluated researchers are still largely unknown. For investigating this topic, we propose a new inwardness indicator able to gauge the degree of scientific self-referentiality of a country. Inwardness is defined as the proportion of citations coming from the country over the total number of citations gathered by the country. A comparative analysis of the trends for the G10 countries in the years 2000-2016 reveals a net increase of the Italian inwardness. Italy became, both globally and for a large majority of the research fields, the country with the highest inwardness and the lowest rate of international collaborations. The change in the Italian trend occurs in the years following the introduction in 2011 of national regulations in which key passages of professional careers are governed by bibliometric indicators. A most likely explanation of the peculiar Italian trend is a generalized strategic use of citations in the Italian scientific community, both in the form of strategic author self-citations and of citation clubs. We argue that the Italian case offers crucial insights on the constitutive effects of evaluation systems. As such, it could become a paradigmatic case in the debate about the use of indicators in science-policy contexts.
    DOI:  https://doi.org/10.1371/journal.pone.0221212
  4. BMJ Open. 2019 Sep 10. 9(9): e025025
    Garas G, Cingolani I, Patel VM, Panzarasa P, Darzi A, Athanasiou T.
      OBJECTIVE: To evaluate the role of the European Union (EU) as a research collaborator in the UK's success as a global leader in healthcare research and innovation and quantify the impact that Brexit may have.DESIGN: Network and regression analysis of scientific collaboration, followed by simulation models based on alternative scenarios.
    SETTING: International real-world collaboration network among all countries involved in robotic surgical research and innovation.
    PARTICIPANTS: 772 organisations from industry and academia nested within 56 countries and connected through 2397 collaboration links.
    MAIN OUTCOME MEASURES: Research impact measured through citations and innovation value measured through the innovation index.
    RESULTS: Globally, the UK ranks third in robotic surgical innovation, and the EU constitutes its prime collaborator. Brokerage opportunities and collaborators' geographical diversity are associated with a country's research impact (c=211.320 and 244.527, respectively; p<0·01) and innovation (c=18.819 and 30.850, respectively; p<0·01). Replacing EU collaborators with US ones is the only strategy that could benefit the UK, but on the condition that US collaborators are chosen among the top-performing ones, which is likely to be very difficult and costly, at least in the short term.
    CONCLUSIONS: This study suggests what has long been argued, namely that the UK-EU research partnership has been mutually beneficial and that its continuation represents the best possible outcome for both negotiating parties. However, the uncertainties raised by Brexit necessitate looking beyond the EU for potential research partners. In the short term, the UK's best strategy might be to try and maintain its academic links with the EU. In the longer term, strategic relationships with research powerhouses, including the USA, China and India, are likely to be crucial for the UK to remain a global innovation leader.
    Keywords:  brexit; impact; innovation; network analysis; research; simulation
    DOI:  https://doi.org/10.1136/bmjopen-2018-025025
  5. Am J Med Qual. 2019 Sep 13. 1062860619873716
    Tumin D, Akpan US, Kohler JA, Uffman JC.
      This study evaluated progress to publication of pediatric quality improvement (QI) projects initially presented as national conference abstracts, according to project findings and other characteristics. QI abstracts were identified among presentations at the 2010-2015 American Academy of Pediatrics National Conference & Exhibition, and publications were tracked through June 2018. Positive findings (improvement on at least 1 quantitative project outcome), interventions, and analyses were correlated with journal publication. Of 142 abstracts, 128 (90%) reported positive findings. Forty-nine positive abstracts and 3 abstracts reporting negative results resulted in publication (38% vs 21%, respectively; P = .256). Median time to publication was 1.2 years for projects with positive findings, compared to >3 years for abstracts with negative findings (P = .029). Ninety percent of abstracts reported positive findings, and these abstracts progressed to publication more quickly. Overcoming publication bias for pediatric QI projects may enhance selection of promising interventions as new projects are designed.
    Keywords:  bibliographic analysis; pediatrics; peer-reviewed journal; publication
    DOI:  https://doi.org/10.1177/1062860619873716
  6. Accid Anal Prev. 2019 Sep 05. pii: S0001-4575(19)30334-3. [Epub ahead of print]132 105243
    Zou X, Vu HL.
      As a way of obtaining a visual expression of knowledge, mapping knowledge domain (MKD) provides a vision-based analytic approach to scientometric analysis which can be used to reveal an academic community, the structure of its networks, and the dynamic development of a discipline. This study, based on the Science Citation Index Expanded (SCIE) and Social Sciences Citation Index (SSCI) articles on road safety, employs the bibliometric tools VOSviewer and CitNetExplorer to create maps of author co-citation, document co-citation, citation networks, analyze the core authors and classic documents supporting road safety studies and show the citation context and development of such studies. It shows that road safety studies clustered mainly into four groups, whose we will refer to as "effects of driving psychology and behavior on road safety", "causation, frequency and injury severity analysis of road crashes", "epidemiology, assessment and prevention of road traffic injury", and "effects of driver risk factors on driver performance and road safety", respectively. Through our analysis, the core publications and their citation relationships were quickly located and explored, and "crash frequency modeling analysis" has been identified to be the core research topic in road safety studies, with spatial statistical analysis technique emerging as a frontier of this topic.
    Keywords:  CitNetExplorer; Citation network; Co-citation analysis; Road safety; Scientometrics; VOSviewer
    DOI:  https://doi.org/10.1016/j.aap.2019.07.019
  7. Int J Health Plann Manage. 2019 Sep 10.
    Sun Z, Cang J, Ruan Y, Zhu D.
      OBJECTIVES: In China, news media are useful for educating the public about the health threats of air pollution. To explore the potential gaps between scientific findings and the public's understanding of them, the characteristics of news media articles and their corresponding scientific papers were analysed.METHODS: We used 22 articles relating to the health outcomes of exposure to outdoor air pollution published on Baidu News over the past year. An assessment tool developed by Robinson et al was used to evaluate the quality scores of news articles. Pearson correlation coefficients were used to measure the relationship between news media reporting and the characteristics of scientific papers. Misleading reporting, interpretation, or extrapolation in headlines and text bodies of news articles were examined.
    RESULTS: The quality scores of the news articles ranged from -4 to 8, with an overall median score of 3. Correlation results showed that the scientific papers citation in Twitter (r = .88, P < .001) and Facebook (r = .64, P < .01) were significantly and positively associated with their citations in news stories. Media misunderstanding of scientific findings was common: 15 news headlines were identified with at least one spin (misrepresentation of scientific results), and 12 news articles had seven types of spin in the body texts.
    CONCLUSION: Little media attention has been paid to scientific findings by Chinese researchers. Therefore, researchers and science journalists in China should make a better effort to engage in accurate and informative public discourse on domestic research.
    Keywords:  content analysis; health outcomes; news media; outdoor air pollution; scientific papers
    DOI:  https://doi.org/10.1002/hpm.2894
  8. Heliyon. 2019 Aug;5(8): e02264
    Dachyar M, Zagloel TYM, Saragih LR.
      The term "Internet of Things" first appeared in publication paper since 2006, describing the paradigm of evolution concept that brought about by the presence of internet technology (Vermesan and Friess, 2015) which is very important in contemporary circumstances. This study conducted an in-depth analysis of the research material written on 26420 papers which focused on the published Internet of Things (IoT) research, starting from the firstly year IoT keyword appeared in 2006 until 2018. The selected paper is a combination of various disciplines and publications which are all indexed by Scopus wherein the article discusses IoT. IoT articles are classified using key attributes in sequence: the methodology used, general knowledge and applied concepts, and various general exploration topics. By using the Scientometrics method, this method will group the overall terms that appear frequently from the Scopus paper database according to keywords, titles, and abstracts. The resulting data is then studied to understand and distinguish trends that occur in the time span along with the general characteristics of the paper, in the mathematics visual scheme. All various issues that are considered in the paper's methodology selection, their studied and services innovations, and continuing discoveries on the characteristics, concepts, and processes applied to IoT success. Although it only involves scopus indexed paper, this study found a remarkable increase in the number of articles on IoT in each category of the paper. This study also reveals the direction of the regular discipline of knowledge. The use of the Scientometrics method makes the analysis able to focus on the movement of characteristics and IoT themes to researcher's direction that has not found at this time, as a comprehensive guide to further research and industry strategy that is more directed on concepts that support the 4th industrial revolution.
    Keywords:  4th Industrial revolution; IOT; Information science; Internet of things; Knowledge growth; Scientometrics; Scopus
    DOI:  https://doi.org/10.1016/j.heliyon.2019.e02264
  9. PLoS One. 2019 ;14(9): e0222213
    Letrud K, Hernes S.
      Several uncorroborated, false, or misinterpreted conceptions have for years been widely distributed in academic publications, thus becoming scientific myths. How can such misconceptions persist and proliferate within the inimical environment of academic criticism? Examining 613 articles we demonstrate that the reception of three myth-exposing publications is skewed by an 'affirmative citation bias': The vast majority of articles citing the critical article will affirm the idea criticized. 468 affirmed the myth, 105 were neutral, while 40 took a negative stance. Once misconceptions proliferate wide and long enough, criticizing them not only becomes increasingly difficult, efforts may even contribute to the continued spreading of the myths.
    DOI:  https://doi.org/10.1371/journal.pone.0222213
  10. Transl Neurosci. 2019 ;10 233-234
    Duy PQ, Sreekrishnan A, David W, Paranjpe MD, Paranjpe I, Sheth A, Gültekin B, Sheth KN.
      Timely dissemination of results from clinical studies is crucial for the advancement of knowledge and clinical decision making. A large body of research has shown that up to half of clinical trials do not publish their findings. In this study, we sought to determine whether clinical trial publication rates within neurology have increased over time. Focusing on neurology clinical trials completed between 2008 to 2014, we found that while the overall percentage of published trials has not changed (remaining at approximately 50%), time to publication has significantly decreased. Our findings suggest that clinical trials within neurology are being published in a more timely manner.
    Keywords:  clinical research; clinical trials; clinicaltrials.gov; neurology; neuroscience
    DOI:  https://doi.org/10.1515/tnsci-2019-0037
  11. Eur J Obstet Gynecol Reprod Biol. 2019 Aug 28. pii: S0301-2115(19)30396-3. [Epub ahead of print]241 104-108
    Najjar W, Mouanness MA, Rameh G, Bazi T.
      OBJECTIVE: The primary aim of this study is to compare the authorship in the Journal of Neurourology and Urodynamics (NAU) and the International Urogynecology Journal (IUJ) across two categories: country members of the Organization for Economic Co-operation and Development (OECD) and non-members of OECD (non-OECD). The secondary aim is to explore the obstacles in publishing in these two journals.STUDY DESIGN: NAU and IUJ articles between June 2014 and June 2018 were manually screened and divided into 2 categories depending on the country of affiliation of the corresponding author: OECD versus non-OECD. They were then divided into seven different types depending on the scope of the article. An online anonymous lime survey was then used to get the opinions of corresponding authors from non-OECD countries regarding obstacles to publishing.
    RESULTS: The OECD countries, representing 17.0% of the world population contributed to 85.4% of the 1885 articles evaluated, whereas only 14.6% originated from non-OECD countries. The distribution of the article types was comparable between the 2 groups. Out of 194 corresponding authors from non-OECD countries, 35 (18.7%) returned a completely filled survey that could be included in the analysis. Lack of funding, language barrier, and perceived bias were acknowledged as barriers to research and publishing. The majority of corresponding authors believed that international collaboration can improve the quality of research.
    CONCLUSIONS: The majority of NAU and IUJ articles originate from countries belonging to the OECD group. The uneven representation could be due to gaps in research activity, to obstacles in submission or both.
    Keywords:  Double-blind review; Funding; International collaboration; OECD; Publishing; Research
    DOI:  https://doi.org/10.1016/j.ejogrb.2019.08.017
  12. Int J Environ Res Public Health. 2019 Sep 10. pii: E3326. [Epub ahead of print]16(18):
    Figueroa-Rodríguez KA, Hernández-Rosas F, Figueroa-Sandoval B, Velasco-Velasco J, Aguilar Rivera N.
      Sugarcane is one of the main crops worldwide, and it has an important impact on environmental issues. A bibliometric mapping analysis of the research on sugarcane was carried out, using data on the titles, abstracts, and keywords of articles published in leading journals and other peer-reviewed documents available in the SCOPUS database from 1858 to 2019 (27 August), and this was subsequently analyzed with the software VOSviewer. The three most important countries that publish research and were most-cited regarding sugarcane were Brazil, the USA, and India. The analysis of the co-occurrence of terms shows that the main research areas were sugarcane bagasse and terms related to bioenergy, and on a second level of relevance agronomy topics related to increasing crop yields. This first attempt to visualize the abundance of publications regarding sugarcane in their totality is in itself a good starting point for further scientific discussion.
    Keywords:  Saccharum officinarum; bioenergy; environmental issues; ethanol; sugarcane bagasse; yield
    DOI:  https://doi.org/10.3390/ijerph16183326
  13. Int J Paediatr Dent. 2019 Sep 13.
    Garcovich D, Adobes Martin M.
      BACKGROUND: Traditional metrics have been extensively used to evaluate the scientific performance. Despite being widespread accepted, citation-based metrics are not able to describe the social impact of research. A diverse metric, Altmetric, was proposed to overcome those limitations.AIM: This study aims to analyse the social impact of research in the field of paediatric dentistry and to assess if a correlation exists between the JCR citations, the AAS score and the recently released Dimensions citation count.
    DESIGN: A bibliometric study was conducted on the four journals related to Paediatric Dentistry listed in the JCR from 2014 to 2017. Descriptive statistics was used to describe the articles and the journals. The Pearson's correlation analysis was used to explore the relationship among JCR citations, AAS and Dimensions.
    RESULTS: The percentage of articles with an AAS presents a huge variability and was significantly higher in the International Journal of Paediatric Dentistry. In our sample, the correlation between the JCR citation count and the AAS was poor in the years 2014, 2015 and 2016 and low in 2017. The correlation between JCR citation and Dimensions citation count was strong.
    CONCLUSIONS: The social impact of research in paediatric dentistry can be increased. Dimensions could be an alternative to the JCR. Both the editors and the researcher should change their vision and facilitate the access to research information to scholar and non-scholar audiences.
    Keywords:  Altmetric; Bibliometrics; Dimensions; Impact factor; Paediatric dentistry
    DOI:  https://doi.org/10.1111/ipd.12575
  14. Nature. 2019 Sep;573(7773): 163-164
      
    Keywords:  Authorship; Publishing; Research data; Research management
    DOI:  https://doi.org/10.1038/d41586-019-02669-3
  15. J Adv Nurs. 2019 Sep 09.
    Galdas P.
      Academia has a long-held obsession with individual performance metrics and markers of esteem, and ranking people accordingly - who has the highest research grant income? The best h-index? The most prestigious fellowships and awards? Academic nursing is no exception, gleefully jumping onto the bandwagon driven, in part, by our fragile and insecure academic identity. Nursing is often viewed as a weaker and less credible discipline by academic peers (Clark and Thompson 2015). This article is protected by copyright. All rights reserved.
    DOI:  https://doi.org/10.1111/jan.14195
  16. Eur Radiol. 2019 Sep 10.
    Bernard C, Pommier R, Vilgrain V, Ronot M.
      OBJECTIVES: To evaluate gender differences in the authorship of articles published in two major European radiology journals, European Radiology (EurRad) and CardioVascular and Interventional Radiology (CVIR).METHODS: A retrospective bibliometric analysis was performed of 2632 papers published in EurRad and CVIR sampled over a period of 14 years (2002-2016). The authors' gender was determined. The analysis was focused on first and last authors. In addition, the characteristics of the articles (type, origin, radiological subspecialty, and country) were noted.
    RESULTS: Overall, 23% of first authors and 10% of the last authors were women. The proportion of women significantly increased over time in EurRad from 22% in 2002 to 35% in 2016 for first authors (p > 0.001), and from 13% in 2002 to 18% in 2016 for last authors (p = 0.05). There was no significant increase in the proportion of female authors in CVIR over time. Female authors were more frequently identified in breast imaging (48%), pediatrics, and gynecological imaging (29%). There were more female authors in articles from Spain (34%), the Netherlands (28%), France, Italy, and South Korea (26%). Forty-one percent and 21% of women were first authors with a woman or man as last author, respectively (p < 0.001).
    CONCLUSION: There was a significant increase in female authorship in original diagnostic but not interventional imaging research articles between 2002 and 2016, with a strong influence of the radiological subspecialty. Women were significantly more frequently first authors when the last author was a woman.
    KEY POINTS: • There was a significant increase in female authorship in original diagnostic but not interventional imaging research articles between 2002 and 2016. • There is a strong influence of the radiological subspecialty on the percentage of female authors. • Women are significantly more frequently first authors when the last author is a woman.
    Keywords:  Authorship; Bibliometrics; Female; Publishing/statistics; Radiology
    DOI:  https://doi.org/10.1007/s00330-019-06390-7
  17. J Korean Assoc Oral Maxillofac Surg. 2019 Aug;45(4): 186-191
    Kim SG.
      Objectives: The aim of this study was to evaluate the journal category "oral surgery" in Scopus and in the Science Citation Index Expanded (SCIE).Materials and Methods: The Journal of Oral and Maxillofacial Surgery (JOMS), The Journal of the Korean Association of Oral and Maxillofacial Surgeons (JKAOMS), and The Journal of Prosthodontic Research (JPR) were selected from the Scopus list of journals as oral surgery journals. Maxillofacial Plastic and Reconstructive Surgery (MPRS) was selected from PubMed as a Scopus oral surgery title. From these titles, 10 recently published articles were collected and used for reference analysis.
    Results: The percentage of citations from oral surgery journals was 26.7%, 24.5%, and 40.1% for JKAOMS, MPRS, and JOMS, respectively. In total, 1.1% of JPR's citations were from oral surgery journals and significantly fewer from other journals (P<0.001). The percentage of citations from dentistry journals excluding oral surgery journals was 11.9%, 34.4%, and 15.8% for JKAOMS, MPRS, and JOMS, respectively. For JPR, 80.6% of citations were from dentistry journals and significantly more were from other journals (P<0.001).
    Conclusion: Selected samples revealed that JPR is incorrectly classified as an oral surgery journal in Scopus. In addition, the scientific interaction among JKAOMS, MPRS, and JOMS was different to JPR in the reference analysis.
    Keywords:  Journal article; Journal impact factor; Oral cavity; Periodicals; Surgery
    DOI:  https://doi.org/10.5125/jkaoms.2019.45.4.186
  18. Medicine (Baltimore). 2019 Sep;98(37): e17027
    Chang L, Su Y, Zhu R, Duan Z.
      BACKGROUND: TB is one of the top 10 causes of death and the leading cause from a single infectious agent. The study characterize the developmental trends and collaboration features in the field of tuberculosis (TB) at the national level and identify high-impact countries.METHODS: Scientometrics and social network analysis methods were used to analyze the research situation and collaboration behaviors based on TB research indexed in Web of Science from 1998 to 2017.
    RESULTS: The publication output, national collaborative rate, and collaborative level have steadily increased from 1998 to 2017. However, domestic publications still account for a substantial proportion of a nation's publications. Over time, the numbers of national publications and international collaborative publications have increased in total, but the growth trend of their share as a proportion of total national publications is not significant. The United States of America has the largest number of highly cited publications, while Denmark, the Netherlands, Switzerland, and Sweden have higher values of average relative citation than do other countries. Notably, the United Kingdom and South Africa have established the strongest and most stable collaboration.
    CONCLUSIONS: There was increasing research activity and collaboration in the field of TB during the period 1998 to 2017, but growth shows wide variability between countries. Further comprehensive and full collaboration should be promoted.
    DOI:  https://doi.org/10.1097/MD.0000000000017027
  19. Tob Induc Dis. 2018 ;16 15
    Wang JH, Wang M, Liu SC, Du XF, Han M, Liu JF, Qin W, Chen B, van Haselen R, Liu JP.
      INTRODUCTION: Traditional Chinese medicine (TCM) is commonly used for smoking cessation in China. The aim of this study is to perform a comprehensive literature search to identify clinical studies on TCM therapies for smoking cessation.METHODS: Publications of randomized controlled trials, controlled clinical studies, cohort studies, case-control studies, case series and case reports, reviews and cross-sectional studies on smoking cessation using TCM therapies were retrieved from seven databases from their inception to February 2017. The following data were extracted and analyzed: study type, year of publication, language, country or region, journals, participants, intervention and comparison, and outcome.
    RESULTS: In total, 260 publications on TCM therapies for smoking cessation were identified from 1980 to 2016, including 52 randomized clinical trials, 7 controlled clinical studies, 1 cohort study, 110 case series, 18 case reports, 50 narrative reviews, 17 systematic reviews, and 5 cross-sectional studies. Of these, 68.5% (178) were published in Chinese and the remaining published in English. Mainland China (n=129, 49.6%) was the leading country in this field, followed by USA (n=27, 10.4%) and UK (n=25, 9.6%). A total of 36 645 participants from 40 countries with age ranging from 12 to 86 years were involved in 188 clinical studies (excluding reviews and cross-sectional studies). The most commonly reported therapies were auricular acupressure (25, 13.3%), body acupuncture (14, 7.4%), and body acupuncture plus auricular acupressure (14, 7.4%). Composite outcomes were most frequently reported (110, 58.5%).
    CONCLUSIONS: A substantial number of clinical studies have been conducted and published on TCM therapy for smoking cessation, mainly focusing on acupuncture stimulation techniques. The findings suggest that future research should pay more attention to acupuncture for smoking cessation.
    Keywords:  bibliometric analysis; clinical studies; smoking cessation; traditional Chinese medicine therapy
    DOI:  https://doi.org/10.18332/tid/86330
  20. Head Face Med. 2019 Sep 07. 15(1): 23
    Tarazona-Alvarez B, Lucas-Dominguez R, Paredes-Gallardo V, Alonso-Arroyo A, Vidal-Infer A.
      BACKGROUND: Due to the lack of bibliometric studies in the field of lingual orthodontics in dentistry, the aim of this study was to assess the evolution and current status of activity in this field during the period 1978-2017.METHODS: A bibliometric analysis of the scientific articles indexed in the Science Citation Index-Expanded of the Web of Science and in the Scopus® database was performed using the truncated terms "ling* apppli*" or "ling* orthod*" or "ling* bracket*". The types of texts included for analysis were limited to "articles" and "reviews". The following information was extracted from each article identified: title, authors' name(s), institutional affiliation(s), country of origin, journal title, year of publication, type of publication, and number of citations.
    RESULTS: A total of 341 articles were identified by 646 different authors, 6.2% were reviews and 93.8% were other types of journal articles. Bibliometric indicators showed a tremendous increase in the rate of publication over time with two peaks in productivity in 1989 and 2013. Fourteen authors and 15 institutional collaboration networks were identified in which European institutions were the most productive. Methodological articles were the most frequent types of research articles (28.1%), followed by case reports/series (17.1%), and narrative reviews (4.7%). Articles providing the highest quality evidence were interventional clinical trials (1.8%) and systematic reviews (0.9%). The remaining articles were non-research papers and were for information purposes only.
    CONCLUSIONS: Bibliometric indicators point to an irregular increase in the numbers of published works in lingual orthodontics over time. Research output is dominated by methodological articles as a technique-driven subspecialty. Although articles on lingual orthodontics are published mainly in North American journals, lingual orthodontics is largely a European domain.
    Keywords:  Bibliometric; Bracket; Lingual; Orthodontics
    DOI:  https://doi.org/10.1186/s13005-019-0207-7
  21. Cureus. 2019 Jul 01. 11(7): e5055
    Akbar HF, Siddiq K, Nusrat S.
      Introduction Bibliometric analysis is one of the emerging and latest statistical study type used to examine and keep a systemic record of the research done on a particular topic of a certain field. A number of such bibliometric studies are conducted on various topics of the medical science but none existed on the vast topic of pharmacology - opioids. Hence, we present a bibliometric analysis of the 'Citation Classics' of opioids. Method The primary database chosen to extract the citation classics of opioids was Scopus. Top 100 citation classics were arranged according to the citation count and then analyzed. Results The top 100 citation classics were published between 1957 and 2013, among which seventy-two were published from 1977 to 1997. Among all nineteen countries that contributed to these citation classics, United States of America alone produced sixty-three classics. The top three journals of the list were multidisciplinary and contained 36 citation classics. Endogenous opioids were the most studied (n=35) class of opioids among the citation classes and the most studied subject was of the neurosciences. Conclusion The subject areas of neurology and analgesic aspects of opioids are well established and endogenous and synthetic opioids were the most studied classes of opioids. However, the egregious issues of addiction and misuse of opioids were underrepresented in the citation classics. The pulmonary and gastrointestinal aspects of opioids are also marginalized among the citation classics.
    Keywords:  bibliometric analysis; citation classics; citescore; opioids; scopus
    DOI:  https://doi.org/10.7759/cureus.5055
  22. J Dent Educ. 2019 Sep 09. pii: JDE.019.153. [Epub ahead of print]
    Ullah R, Adnan S, Afzal AS.
      The number of citations an article receives is an important indicator to quantify its influence in its field. The aim of this study was to identify and analyze the characteristics of the 50 top-cited articles addressing dental education published in two journals dedicated to dental education (European Journal of Dental Education and Journal of Dental Education). The Web of Science database was searched to retrieve the 50 most-cited articles from the two journals in December 2018. The top-cited articles were analyzed for journal of publication, number of citations, institution and country of origin, year of publication, study type, keywords, theme and subtheme, and international collaborations. The results showed the 50 top-cited articles were cited between 24 and 146 times each. The majority of these top-cited articles (n=34) were published in the Journal of Dental Education. Half (n=25) of the articles were by authors in the U.S. The most common study types were surveys (n=26) and reviews (n=10). The main themes of these top-cited articles were curriculum and learner characteristics. This bibliometric analysis can serve as a reference for recognizing studies with the most impact in the scholarship of dental education.
    Keywords:  bibliometric analysis; citation analysis; collaboration; dental education; funding; publishing; research
    DOI:  https://doi.org/10.21815/JDE.019.153