bims-evares Biomed News
on Evaluation of research
Issue of 2020‒12‒27
fourteen papers selected by
Thomas Krichel
Open Library Society


  1. Mar Pollut Bull. 2020 Dec 18. pii: S0025-326X(20)31045-6. [Epub ahead of print]163 111926
    Sorensen RM, Jovanović B.
      Identifying leading publications, authors, and countries in microplastic and nanoplastic research is beneficial for regulatory decisions, determining standardized research methodology, and solidifying definitions. Here, bibliometric analysis was performed using Web of Science's Core Collection to evaluate publication trends. A total of 3820 publications were downloaded and analyzed with the majority being journal articles. Since 2009, the number of publications has substantially increased. Results revealed that although the USA and China are the topmost publishing countries, two out of three of the top publishing institutions lie outside of these countries. The year with highest total number of citations was 2019 (42,000 citations), followed by 2018 (25,000 citations) and 2017 (13,000 citations). The journal Marine Pollution Bulletin published the highest number of records and included the top cited publications. Top publishing countries and the top cited publications and authors will likely pave the way for standardization in both microplastic and nanoplastic research.
    Keywords:  Bibliometric; Marine litter; Marine pollution; Microplastic; Nanoplastic; Web of science
    DOI:  https://doi.org/10.1016/j.marpolbul.2020.111926
  2. Dermatol Online J. 2020 Nov 15. pii: 13030/qt9xm5d9q9. [Epub ahead of print]26(11):
    Kamath P, Egger A, Karanfilian TS, Karanfilian KM, Agarwal N, Lambert WC.
      BACKGROUND: As skin cancer is the most common cancer in the U.S., many publications focus on cutaneous malignancies. The objective was to identify and analyze the 100 most-cited articles pertaining to skin cancers to provide clarity on past, and insight for future research.METHODS: Using a two-stage search of Thomson Reuters Web of Science database, the 100 most-cited skin cancer articles between 1945 and 2018 were identified and analyzed.
    RESULTS: The articles were cited an average total of 558.49 times (range: 259 to 3429). There were relatively few significant publications until 1988. Linear correlation revealed that journal impact factor was not correlated with average number of citations per year per article (R2=0.06). Molecular pathogenesis and UV exposure were the most common topics. The topics that received the highest average citations per year per article were prevention (50.44 citations per year), diagnosis (47.32 citations per year), and management (41.37 citations per year). Basic science articles accounted for the most publications, followed by narrative literature reviews.
    CONCLUSIONS: These results may indicate that future publications with similar characteristics are more likely to be cited and thus, more influential.
  3. Nutrition. 2020 Nov 12. pii: S0899-9007(20)30343-9. [Epub ahead of print]82 111060
    Suzan V, Unal D.
      OBJECTIVES: In this study, we aimed to provide bibliometric and Altmetric overviews and visualization and to evaluate the correlation between traditional bibliometric and Altmetric analyses in the field of malnutrition.METHODS: Articles published in the past decade were identified by searching for the term "malnutrition" on the Web of Science indexing database and research platform. The top 50 cited articles were analyzed in terms of title, study type, topic of study, first author, publication year, citation number, keywords, organizations, average citations per year, journal H index, impact factor, and Altmetric attention score. Also, the top 50 Altmetric articles published in the past decade about malnutrition were provided on the website Altmetric.com.
    RESULTS: Among the top 50 cited articles, the most common study type, topic of study, publication year, and keyword were, respectively, original scientific paper (n = 26), definition-diagnosis of malnutrition (n = 17), 2010 (n = 13), and malnutrition (n = 18). The article titled "Maternal and child undernutrition and overweight in low-income and middle-income countries" in Lancet had the highest citation number, and the article "Impacts of COVID-19 on childhood malnutrition and nutrition-related mortality" in Lancet had the highest Altmetric score.
    CONCLUSIONS: Evaluating academic publications with an Altmeric analysis in addition to a traditional bibliometric analysis is beneficial because Altmetric attention scores can give information about what the population wants to know about malnutrition and allows us to develop appropriate policies.
    Keywords:  Altmetric; Bibliometric; Citation; Malnutrition; Nutrition
    DOI:  https://doi.org/10.1016/j.nut.2020.111060
  4. Caries Res. 2020 Dec 18. 1-9
    Baldiotti ALP, Amaral-Freitas G, Barcelos JF, Freire-Maia J, Perazzo MF, Freire-Maia FB, Paiva SM, Ferreira FM, Martins-Júnior PA.
      A highly cited paper is seen as a landmark in any field and can influence both research and clinical practice. This study aimed to quali-quantitatively analyze the 100 most-cited papers in Cariology. A search strategy was first determined using specific keywords related to the field. A comprehensive search was then conducted in the Thompson Reuters Web of Science citation indexing database up to April 2019. Papers focused on any aspect of Cariology were included. A panel of 4 researchers conducted the selection of papers and extracted data on the number of citations, title, authors, country, year, journals, study design, and topic of interest. Scopus and Google Scholar were also searched to compare the number of citations. The VOSviewer software was used to generate bibliometric networks. The number of citations among the top 100 most-cited papers ranged from 168 to 1,961 with a mean of 292,66. Three papers had more than 1,000 citations. The Journal of Dental Research (20%) and Caries Research (17%) had more top papers. The oldest and the most recent papers were published in 1960 and 2015. Literature reviews (35%) and laboratorial studies (31%) were the most common study designs. The countries with the highest number of most-cited papers were the USA (40%), Sweden (10%), and Japan (9%). The most studied fields of interest were etiology/pathogenesis (41%) and prevention (20%). VOSviewer maps revealed collaborative networks between countries and organizations. The top 100 most-cited papers in Cariology were published mainly by European and Anglo-Saxon American authors and were composed mainly of literature reviews with etiology/pathogenesis as the most frequent topic of interest.
    Keywords:  Bibliographic coupling; Bibliometrics; Databases; Dental caries; Publications
    DOI:  https://doi.org/10.1159/000509862
  5. J Surg Educ. 2020 Dec 18. pii: S1931-7204(20)30472-4. [Epub ahead of print]
    Kane WJ, Berry PS, Denton AH, Schroen AT.
      OBJECTIVE: To determine whether attainment of an additional graduate-level degree during general surgery residency, such as an MSc, MPH, MBA, or PhD, is associated with increased research productivity beyond completion of training.DESIGN: Observational cohort study comparing publication productivity of general surgery residency graduates who did and did not obtain a degree. PubMed queries and the Web of Science Core Collection were used to capture publication metrics. Graduate characteristics, including degree attainment, were obtained from an institutional database. Practice webpages were reviewed to designate an academic surgical practice, defined as an assistant, associate, or full professorship appointment.
    SETTING: Single academic general surgery residency program.
    PARTICIPANTS: Categorical general surgery residency graduates who performed at least 1 year of dedicated research.
    RESULTS: 1768 total publications, representing 1500 unique publications, were authored by 54 residents, of which 18 (33.3%) residents attained an additional graduate-level degree during dedicated research. 1369 (91.3%) publications had identifiable Journal Impact Factors and citation data. Degree attainers were more likely to be female (55.6% vs. 25.0%, p = 0.03) and spend more time in dedicated research (mean 2.2 vs. 1.8 years, p = 0.02). Overall, degree attainers published more frequently during residency (median 4.4 vs. 2.1 publications/year, p < 0.001) and fellowship (median 2.0 vs. 1.0 publications/year, p = 0.046). Analysis of the first 4 post-training years demonstrated degree attainers produced 1.2 more publications per year among all graduates (2.3 vs. 1.1 publications/year, p = 0.02) and 1.6 more publications per year among graduates practicing academic surgery (3.3 vs. 1.7 publications/year, p = 0.02). There were no differences in the Journal Impact Factor or publication citations per year among degree and nondegree attaining graduates.
    CONCLUSIONS: Attainment of an additional graduate-level degree was associated with increased research productivity that was sustained beyond surgical residency. Programs with the goal of training academic surgeons should support professional degrees during dedicated research years.
    Keywords:  Professionalism; academic surgery; research productivity; residency education; scholarly activity
    DOI:  https://doi.org/10.1016/j.jsurg.2020.12.004
  6. Int J Ophthalmol. 2020 ;13(12): 1998-2006
    Sun YX, Liu YN, Han Y, Kong FQ, Zhang Y, Labisi SA, Cao K.
      AIM: To explore the global trends and focus of glaucoma research from 2009 to 2018.METHODS: Searching for glaucoma-related articles published in Science Citation Index Expanded (SCIE) database during 2009-2018, and describing the distribution of the published year, countries, authors, institutions, funding agencies, journals, impact factor, citation and hot research topic of articles by using bibliometric methods. Meanwhile, we compared some of these indicators over two five-year periods, from 2009 to 2013 and from 2014 to 2018.
    RESULTS: A total of 19 609 glaucoma-related articles were retrieved and the global SCIE articles have increased yearly from 2009 to 2018. The USA was the pioneer which has made great contributions. China kept the second place and the number of publications has increased rapidly between 2014 and 2018. The author with the highest number of publications was Weinreb, RN. Co-occurrence maps were built amongst the top 50 authors or the top 50 institutions with the most articles, which visualize the closer collaboration of international authors or institutions. The journal Investigative Ophthalmology & Visual Science has published the most papers. Glaucoma literature with an impact factor of 3-5 points accounted for the largest proportion (28.96%). The most frequently cited paper had 798 citations. The top three hot areas on glaucoma were intraocular pressure, optical coherence tomography (OCT) and retinal ganglion cells. And trabecular meshwork, primary angle-closure glaucoma and Spectral-domain OCT have become new hot research topics in recent five years during 2014-2018.
    CONCLUSION: Bibliometric analysis is an effective method to describe the global literature on glaucoma. In a 10-year literature survey from 2009 to 2018, global glaucoma research has developed in a balanced manner, and the cooperation between various institutions and teams has become closer. Glaucoma-related pathogenesis research, imaging examinations of OCT and surgery therapy have attracted most attention.
    Keywords:  Science Citation Index Expanded; bibliometric analysis; glaucoma; ocular hypertension
    DOI:  https://doi.org/10.18240/ijo.2020.12.23
  7. Am J Obstet Gynecol MFM. 2020 Nov;pii: S2589-9333(20)30170-1. [Epub ahead of print]2(4): 100201
    Bennett C, Chambers LM, Al-Hafez L, Michener CM, Falcone T, Yao M, Berghella V.
      BACKGROUND: The publication of invalid scientific findings may have profound implications on medical practice. As the incidence of article retractions has increased over the last 2 decades, organizations have formed, including Retraction Watch, to improve the transparency of scientific publishing. At present, the incidence of article retraction in the obstetrics and maternal-fetal medicine literature is unclear.OBJECTIVE: This study aimed to determine the number of retracted articles within the obstetrics and maternal-fetal medicine literature from the PubMed and Retraction Watch databases and examine reasons for retraction.
    STUDY DESIGN: A retrospective review of the PubMed and Retraction Watch databases was performed to identify retracted articles in the obstetrics and maternal-fetal medicine literature from indexation through December 31, 2019. The primary outcome was defined as the number of identified articles and reason for retraction. Within PubMed, articles were identified using a medical subheading search for articles categorized as withdrawn or retracted. In addition, the Retraction Watch database was queried and nonobstetrical articles were excluded. The reason for retraction was classified according to the categories listed in Retraction Watch. The subject matter was classified on the basis of the Society for Maternal-Fetal Medicine criteria. Data were collected from retracted articles for author name, country, journal name and impact factor, year of publication and retraction, study type, and response of the publishing journal. Descriptive statistics were performed.
    RESULTS: Of the 519 obstetrics and gynecology articles in Retraction Watch, 122 (23.5%) were specific to the obstetrics and maternal-fetal medicine specialties. In addition, 39 (32.0%) were identified from PubMed, all of which were included in Retraction Watch. There was a median time to retraction of 1 (range, 0-17) year, with a median of 3 citations per article (range, 0-145). In addition, the median journal impact factor was 2.2 (range, 0.1-27.6), with median first and senior author Hirsch index values of 6.0 and 13.5, respectively. Most articles were original research (n=80; 65.6%), specifically retrospective studies (n=11; 9.0%), case reports (n=19; 15.6%), prospective studies (n=18; 14.8%), randomized controlled trials (n=11; 9%), basic science (n=18; 14.8%), and systematic review or meta-analysis (n=3; 2.5%). Of eligible articles, 32 (26.2%) were published in journals with an impact factor ≥4, and 21 articles (17.2%) were published in the top 10 leading impact factor obstetrics and gynecology journals. Most retractions were for content-related issues (n=87; 71.3%), including 21.3% (n=26) for article duplication, 18.9% (n=23) for plagiarism, and 16.4% (n=20) for errors in results or methods. Additional reasons included author misconduct (n=12; 9.8%), nonreproducible results (n=11; 9.0%), and falsification (n=8; 6.6%). The most common journal response was an issued statement of retraction (n=82; 67.2%). Lack of retraction notice and limited to no information provided by the publishing journal occurred in 19 retracted articles (15.6%).
    CONCLUSION: In the obstetrics and maternal-fetal medicine literature, retraction of scientific articles is increasing and is most often related to scientific misconduct, including article duplication and plagiarism. Improved prevention and detection are warranted by journals and healthcare institutions to ensure that invalid findings are not perpetuated in the medical literature, thereby avoiding adverse consequences for maternal and perinatal care.
    Keywords:  article retraction; duplication; maternal-fetal medicine; obstetrics; plagiarism; scientific misconduct
    DOI:  https://doi.org/10.1016/j.ajogmf.2020.100201
  8. J Informetr. 2021 Feb;pii: 101104. [Epub ahead of print]15(1):
    Smith TB, Vacca R, Krenz T, McCarty C.
      Over the last century scientific research has become an increasingly collaborative endeavor. Commentators have pointed to different factors which contribute to this trend, including the specialization of science and growing need for diversity of interest and expertise areas in a scientific team. Very few studies, however, have precisely evaluated how the diversity of interest topics between researchers is related to the emergence of collaboration. Existing theoretical arguments suggest a curvilinear relationship between topic similarity and collaboration: too little similarity can complicate communication and agreement, yet too much overlap can increase competition and limit the potential for synergy. We test this idea using data on six years of publications across all disciplines at a large U.S. research university (approximately 14,300 articles, 12,500 collaborations, and 3,400 authors). Employing topic modelling and network statistical models, we analyze the relationship between topic overlap and the likelihood of coauthorship between two researchers while controlling for potential confounders. We find an inverted-U relationship in which the probability of collaboration initially increases with topic similarity, then rapidly declines after peaking at a similarity "sweet spot". Collaboration is most likely at low-to-moderate levels of topic overlap, which are substantially lower than the average self-similarity of scientists or research groups. These findings - which we replicate for different units of analysis (individuals and groups), genders of collaborators, disciplines, and collaboration types (intra- and interdisciplinary) - support the notion that researchers seek collaborators to augment their scientific and technical human capital. We discuss implications for theories of scientific collaboration and research policy.
    Keywords:  Collaboration; Exponential Random Graph Models; Latent Semantic Analysis; Science of Science; Team science; Topic modeling
    DOI:  https://doi.org/10.1016/j.joi.2020.101104
  9. J Pediatr. 2020 Dec 18. pii: S0022-3476(20)31514-6. [Epub ahead of print]
    Williams WA, Li A, Goodman DM, Ross LF.
      OBJECTIVE: To assess the impact of the COVID-19 pandemic on authorship gender in articles submitted to The Journal of Pediatrics.STUDY DESIGN: Using gender-labeling algorithms and human inspection, we inferred the gender of corresponding authors of original articles submitted in January-February and April-May of 2019 and 2020 noting those articles related to the COVID-19 pandemic. We used Pearson chi-square tests to determine differences in gender proportions during the selected periods in the United States and internationally.
    RESULTS: We analyzed 1,521 original articles. Submissions increased 10.9% from Jan-Feb 2019 to Jan-Feb 2020 and 61.6% from Apr-May 2019 to Apr-May 2020. Women accounted for 56.0% of original articles in Apr-May 2019, but only 49.8% of original articles in Apr-May 2020. Original articles focused on COVID-19 represented a small percentage of additional articles submitted in Jan-Feb 2020 (1/33 or 3.0%) and (53/199 or 26.6%) in Apr-May 2020 compared with the number of submissions in the same months in 2019. International male CAs submitted a significantly larger proportion of original articles compared with international female CAs in Apr-May 2020 compared to Apr-May 2019 (p=0.043). There was no difference in CA gender proportion in the United States (US in Apr-May of 2020 versus Apr-May of 2019 (p=0.95). There was no significant difference in final dispositions based on CA gender for original articles from 2019 and 2020 (P = .17).
    CONCLUSIONS: Original article submissions to The Journal increased in Apr-May 2020, with the greatest increase by international male CAs. The majority of the submission growth was not related to COVID-19.
    Keywords:  COVID-19; authorship; female physicians; gender; gender bias; international; pandemic; publications; women in pediatrics
    DOI:  https://doi.org/10.1016/j.jpeds.2020.12.032
  10. Z Gastroenterol. 2020 Dec 21.
    Welle R, Seufferlein T, Kratzer W.
      BACKGROUND:  The state of research in the field of abdominal ultrasonography has been deficient for years at German university hospitals. Neither research activity nor funding are appropriate given the actual clinical importance of this method.OBJECTIVE:  In analogy to studies conducted in 1999 and 2009, this study aims to provide a survey into the state of research in the field of abdominal ultrasonography at German university hospitals. It focuses on the topics of research activity, research funding, publication rate and the development of structural conditions.
    METHODS:  Chief gastroenterologists from Germany's 34 university hospitals were invited to respond to a postal survey asking about the aforementioned topics. We asked them to forward the survey in case somebody else was responsible for the respective tasks. The response rate was 79 %.
    RESULTS:  The amount of hospitals doing research has roughly remained the same with 77 % compared to 74 % in 2009 and 80 % in 1999. On average, however, there are less research projects per department with 3.2 at the moment compared to 3.5 in 1999 and 3.6 in 2009, and research funding has continued to worsen. 75 % of the heads of departments state that they have not received any funding in addition to the usual budget. Funding by producers of ultrasound machines has also reached a low with 11 % compared to 45 % in 2009 and 31 % in 1999. Only public and university funding show a positive trend. The Deutsche Forschungsgemeinschaft (German Research Foundation) is currently not funding any research projects in the field of abdominal ultrasonography. 13 university hospitals provided information about their publication rate in 1999, 2009 and 2019. Whereas the rate had generally remained constant in the previous studies, the annual number of publications has continually increased in the current survey period. 75 % of the publications came from university hospitals that have established or are currently planning to establish interdisciplinary ultrasound centers. The previous studies also showed that more and more hospitals publish in English instead of German. This trend continues. During the survey period, 60 % of publications were both in English and German, 37 % in English and only 3 % exclusively in German. Most publications dealt with clinical and only a few technical or basic research questions. This was also the case in the previous studies. There have been less publications on the use of ultrasound contrast agents in the present survey period. There is also a decline in the number of systematic reviews. Similar to 2009, the impact factor of journals devoted to sonography is increasing and it is growing stronger than that of journals dedicated to radiology. However, only 29 % of the heads of departments agreed that ultrasonography was a field of research that improves your career prospects.
    CONCLUSIONS:  The present study did not show a significant improvement of research activity in the field of abdominal ultrasonography. However, an increased publication rate indicates a trend towards high-performing research centers. Research funding remains deficient and has worsened in the past 20 years. The demands made by the previous studies for research funding appropriate to the importance of this clinical method remain.
    DOI:  https://doi.org/10.1055/a-1332-2589
  11. Front Psychol. 2020 ;11 598676
    Sott MK, Bender MS, Furstenau LB, Machado LM, Cobo MJ, Bragazzi NL.
      In this study, we explore a 100 years of Work and Organizational Psychology (WOP). To do this, we carry out a bibliometric performance and network analysis (BPNA) to understand the evolution structure and the most important themes in the field of study. To perform the BNPA, 8,966 documents published since 1919 were exported from the Web of Science and Scopus databases. The SciMAT software was used to process data and to create the evolution structure, the strategic diagram, and the thematic network structure of the strategic themes of the field of WOP. We identified 29 strategic clusters and discuss the most important themes (motor themes) and their relationship with other clusters. This research presents the complete evolution of the field of study, identifying emerging themes and others with a high degree of development. We hope that this work will support researchers and future research in the field of WOP.
    Keywords:  bibliometric; industrial and organizational psychology; organizational behavior; science mapping; strategic intelligence; work psychology
    DOI:  https://doi.org/10.3389/fpsyg.2020.598676