bims-evares Biomed News
on Evaluation of research
Issue of 2019‒07‒07
twenty-five papers selected by
Thomas Krichel
Open Library Society

  1. Nature. 2019 Jul;571(7764): 147
    Holcombe A.
    Keywords:  Publishing; Research management
  2. Nurs Outlook. 2019 May 11. pii: S0029-6554(19)30189-7. [Epub ahead of print]
    Oermann MH, Nicoll LH, Carter-Templeton H, Woodward A, Kidayi PL, Neal LB, Edie AH, Ashton KS, Chinn PL, Amarasekara S.
      BACKGROUND: Nursing journals from predatory publication outlets may look authentic and seem to be a credible source of information. However, further inspection may reveal otherwise.PURPOSE: The purpose of this study was to analyze publication and dissemination patterns of articles published in known predatory nursing journals.
    METHOD: Using Scopus, reference lists were searched for citations from seven identified predatory nursing journals. Bibliographic information and subsequent citation information were then collected and analyzed.
    FINDINGS: A total of 814 citations of articles published in predatory nursing journals were identified. Further analysis indicated that these articles were cited in 141 nonpredatory nursing journals of various types.
    DISCUSSION: Predatory nursing journals continue to persist, yet fewer may now be in existence. Education and information may help authors and reviewers identify predatory journals, thereby discouraging submissions to these publications and hesitancy among authors to cite articles published in them.
    Keywords:  Citation analysis; Knowledge dissemination; Nursing literature; Open access; Predatory nursing journals; Publications
  3. J Cancer. 2019 ;10(12): 2643-2653
    Wang X, Guo J, Gu D, Yang Y, Yang X, Zhu K.
      Due to various environmental pollution issues, cancers have become the "first killer" of human beings in the 21st century and their control has become a global strategy of human health. The increasing development of emerging information technologies has provided opportunities for prevention, early detection, diagnosis, intervention, prognosis, nursing, and rehabilitation of cancers. In recent years, the literature associated with emerging technologies in cancer has grown rapidly, but few studies have used bibliometrics and a visualization approach to conduct deep mining and reveal a panorama of this field. To explore the dynamic knowledge evolution of emerging information technologies in cancer literature, we comprehensively analyzed the development status and research hotspots in this field from bibliometrics perspective. We collected 7,136 articles (2000-2017) from the Web of Science database and visually displayed the dynamic knowledge evolution process via the analysis on time-sequence changes, spatial distribution, knowledge base, and hotspots. Much institutional cooperation occurs in this field, and research groups are relatively concentrated. BMC Bioinformatics, PLOS One, Journal of Urology, Scientific Reports, and Bioinformatics are the top five journals in this field. Research hotspots are mainly concentrated in two dimensions: the disease dimension (e.g., cancer, breast cancer, and prostate cancer), and the technical dimension (e.g., robotics, machine learning, data mining, and etc.). The emerging technologies in cancer research is fast ascending and promising. This study also provides researchers with panoramic knowledge of this field, as well as research hotspots and future directions.
    Keywords:  bibliometrics; cancers; emerging information technology; hotspots; knowledge evolution
  4. Nature. 2019 Jul;571(7763): 95-98
    Tshitoyan V, Dagdelen J, Weston L, Dunn A, Rong Z, Kononova O, Persson KA, Ceder G, Jain A.
      The overwhelming majority of scientific knowledge is published as text, which is difficult to analyse by either traditional statistical analysis or modern machine learning methods. By contrast, the main source of machine-interpretable data for the materials research community has come from structured property databases1,2, which encompass only a small fraction of the knowledge present in the research literature. Beyond property values, publications contain valuable knowledge regarding the connections and relationships between data items as interpreted by the authors. To improve the identification and use of this knowledge, several studies have focused on the retrieval of information from scientific literature using supervised natural language processing3-10, which requires large hand-labelled datasets for training. Here we show that materials science knowledge present in the published literature can be efficiently encoded as information-dense word embeddings11-13 (vector representations of words) without human labelling or supervision. Without any explicit insertion of chemical knowledge, these embeddings capture complex materials science concepts such as the underlying structure of the periodic table and structure-property relationships in materials. Furthermore, we demonstrate that an unsupervised method can recommend materials for functional applications several years before their discovery. This suggests that latent knowledge regarding future discoveries is to a large extent embedded in past publications. Our findings highlight the possibility of extracting knowledge and relationships from the massive body of scientific literature in a collective manner, and point towards a generalized approach to the mining of scientific literature.
  5. Elife. 2019 Jul 02. pii: e43094. [Epub ahead of print]8
    Danchev V, Rzhetsky A, Evans JA.
      Concerns have been expressed about the robustness of experimental findings in several areas of science, but these matters have not been evaluated at scale. Here we identify a large sample of published drug-gene interaction claims curated in the Comparative Toxicogenomics Database (for example, benzo(a)pyrene decreases expression of SLC22A3) and evaluate these claims by connecting them with high-throughput experiments from the LINCS L1000 program. Our sample included 60,159 supporting findings and 4253 opposing findings about 51,292 drug-gene interaction claims in 3363 scientific articles. We show that claims reported in a single paper replicate 19.0% (95% confidence interval [CI], 16.9-21.2%) more frequently than expected, while claims reported in multiple papers replicate 45.5% (95% CI, 21.8-74.2%) more frequently than expected. We also analyze the subsample of interactions with two or more published findings (2493 claims; 6272 supporting findings; 339 opposing findings; 1282 research articles), and show that centralized scientific communities, which use similar methods and involve shared authors who contribute to many articles, propagate less replicable claims than decentralized communities, which use more diverse methods and contain more independent teams. Our findings suggest how policies that foster decentralized collaboration will increase the robustness of scientific findings in biomedical research.
    Keywords:  collaboration networks; computational biology; computational social science; meta-research; none; replication; robust knowledge; sociology of science; systems biology
  6. J Am Podiatr Med Assoc. 2019 May;109(3): 226-230
    Rushing CJ, Merritt G, Amin T, Spinner SM.
      BACKGROUND: The quality of national society conferences is often assessed indirectly by analyzing the journal publication rates for the abstracts presented. Studies have reported rates from 67.5% to 76.7% for oral abstracts and 23.2% to 55.8% for poster abstracts presented at national foot and ankle society conferences. However, no study has evaluated the abstract to journal publication rate for the American Podiatric Medical Association's (APMA's) annual conference.METHODS: All presented abstracts from the 2010 to 2014 conferences were compiled. PubMed and Google Scholar searches were performed, and the number of abstracts presented, publication rate, mean time to publication, and most common journals of publication were determined. These results were then compared with those for the 2010 to 2014 American College of Foot and Ankle Surgeons' conferences.
    RESULTS: Of 380 abstracts presented, 142 (37.4%) achieved publication, most often in the Journal of the American Podiatric Medical Association. The oral abstract publication rate was 45.2% (14 of 31), with a mean time to publication of 24.2 months (range, 0-47 months). The poster publication rate was 36.7% (128 of 349), with a mean time to publication of 16.3 months (range, 0-56 months). Significant differences were identified between the two societies.
    CONCLUSIONS: The overall abstract to journal publication rate for the 2010 to 2014 APMA conferences was 37.4%, and, expectedly, oral abstracts achieved publication more often than posters. Moving forward, a concerted effort between competing societies seems necessary to increase research interest, institutional support, and formal mentorship for future generations of foot and ankle specialists.
  7. J Investig Med. 2019 Jun 26. pii: jim-2019-001009. [Epub ahead of print]
    Kaldas M, Michael S, Hanna J, Yousef GM.
      The journal impact factor (IF) is the leading method of scholarly assessment in today's research world. An important question is whether or not this is still a constructive method. For a specific journal, the IF is the number of citations for publications over the previous 2 years divided by the number of total citable publications in these years (the citation window). Although this simplicity works to an advantage of this method, complications arise when answers to questions such as 'What is included in the citation window' or 'What makes a good journal impact factor' contain ambiguity. In this review, we discuss whether or not the IF should still be considered the gold standard of scholarly assessment in view of the many recent changes and the emergence of new publication models. We will outline its advantages and disadvantages. The advantages of the IF include promoting the author meanwhile giving the readers a visualization of the magnitude of review. On the other hand, its disadvantages include reflecting the journal's quality more than the author's work, the fact that it cannot be compared across different research disciplines, and the struggles it faces in the world of open access. Recently, alternatives to the IF have been emerging, such as the SCImago Journal & Country Rank, the Source Normalized Impact per Paper and the Eigenfactor Score, among others. However, all alternatives proposed thus far are associated with their own limitations as well. In conclusion, although IF contains its cons, until there are better proposed alternative methods, IF remains one of the most effective methods for assessing scholarly activity.
    Keywords:  education, medical; evidence-based medicine; science
  8. J Orthod. 2019 Jul 04. 1465312519860160
    Alharbi F, Almuzian M.
      INTRODUCTION: Clear reporting of the abstracts of randomised controlled trials (RCTs) facilitates the assessment and identification of such trials.AIM: To assess whether authors in the orthodontic field of research currently report RCT abstracts adequately, as defined by the Consolidated Standards of Reporting Trials (CONSORT) statement.
    DESIGN: An observational retrospective study.
    METHODS: Electronic searches with supplementary hand searching were undertaken to identify RCTs published in (1) American Journal of Orthodontics and Dentofacial Orthopedics (AJO-DO), (2) Angle Orthodontist (AO), (3) European Journal of Orthodontics (EJO) and (4) Journal of Orthodontics (JO) for the period from January 2012 to December 2017. The completeness of the abstract reporting was evaluated using a modified CONSORT for abstract statement checklist.
    RESULTS: A total of 3678 articles were retrieved, but only 224 RCT abstracts were identified and assessed. A high volume of RCTs were published with either the AO (39%) or AJO-DO (32%); the majority of the RCT abstracts (93.6%) were structured. The mean overall abstract reporting quality score was 69.1% (95% confidence interval = 67.5-70.7). In relation to individual quality items, the majority of the RCT abstracts (range = 96-100%) demonstrated clear reporting of the author/contact details, trial design, participants, interventions, objectives, outcomes, number of participants randomised to each group, recruitment, results and conclusions. However, reporting of the title, trial registration, funding and number of analysed participants were only moderately adequate and reporting of the assessment of blinding and adverse events were the least-reported items in the identified abstracts.
    CONCLUSIONS: As several CONSORT reporting items were poorly reported, it is the responsibility of authors, referees and editors alike to ensure that the CONSORT guidelines are followed.
    Keywords:  CONSORT; abstracts; evidence-based dentistry; orthodontics; randomised clinical trials
  9. Int J Ment Health Nurs. 2019 Jun 30.
    McNamara P, Usher K.
      The impact of published research is sometimes measured by the number of citations an individual article accumulates. However, the time from publication to citation can be extensive. Years may pass before authors are able to measure the impact of their publication. Social media provides individuals and organizations a powerful medium with which to share information. The power of social media is sometimes harnessed to share scholarly works, especially journal article citations and quotes. A non-traditional bibliometric is required to understand the impact social media has on disseminating scholarly works/research. The International Journal of Mental Health Nursing (IJMHN) appointed a social media editor as of 1 January 2017 to implement a strategy to increase the impact and reach of the journal's articles. To measure the impact of the IJMHN social media strategy, quantitative data for the eighteen months prior to the social media editor start date, and the eighteen months after that date (i.e.: from 01 July 2015 to 30 June 2018) were acquired and analysed. Quantitative evidence demonstrates the effectiveness of one journal's social media strategy in increasing the reach and readership of the articles it publishes. This information may be of interest to those considering where to publish their research, those wanting to amplify the reach of their research, those who fund research, and journal editors and boards.
    Keywords:  Twitter; editor; journal; social media; strategy
  10. BMC Complement Altern Med. 2019 Jul 05. 19(1): 160
    Kim SK, Oh Y, Nam S.
      BACKGROUND: Much research on Korean medicine has been recently published in Korea. The aim of this study was to determine the research trends in Korean medicine by performing a comprehensive analysis of articles that have been published in Korea using temporal and network analysis methods.METHODS: A total of 29,876 articles from 1963 to 2018 were prepared from OASIS (Oriental Medicine Advanced Searching Integrated System), the largest portal for Korean medicine. After the keywords and years were extracted from the metadata of the articles, an annual frequency matrix was obtained for the keywords. By using the matrix, the temporal trends of the keywords were analyzed by comparing the changes in similarity between the lists of keywords by year. Moreover, to analyze the relationship among research topics, a clustered network was constructed in which a node was a keyword and an edge was a similarity between two keywords.
    RESULTS: The temporal trend of the keywords was classified into six chronological phases. The appearance frequency of most keywords tended to increase gradually, but only the keywords "mibyeong," "systems biology" and "korean medicine hospital" appeared in the most recent phase. The network of keywords was clustered and visualized into thirteen groups with the Gephi software. The main keywords in each group were related to effects such as "anti-inflammation" and "antioxidant," to diseases such as "allergic rhinitis" and "diabetes" and to therapies such as "herbal acupuncture" and "herbal formula."
    CONCLUSIONS: The analysis of the trends determined in this study provides a systematic understanding as well as future research directions in Korean medicine to researchers. In the future, an overall analysis of the research trends in Korean medicine will be done by analyzing articles published in Korea and other countries.
    Keywords:  Korean medicine; Network analysis; OASIS; Temporal analysis; Trend analysis
  11. PeerJ. 2019 ;7 e7073
    Jiang G, Huang CK, Zhang X, Lv X, Wang Y, Yu T, Cai X.
      Background: The Wnt signaling pathway, an evolutionarily conserved molecular transduction cascade, has been identified as playing a pivotal role in various physiological and pathological processes of the liver, including homeostasis, regeneration, cirrhosis, and hepatocellular carcinoma (HCC). In this study, we aimed to use a bibliometric method to evaluate the emerging trends on Wnt signaling in liver diseases.Methods: Articles were retrieved from the Web of Science Core Collection. We used a bibliometric software, CiteSpace V 5.3.R4, to analyze the active countries or institutions in the research field, the landmark manuscripts, important subtopics, and evolution of scientific ideas.
    Results: In total, 1,768 manuscripts were published, and each was cited 33.12 times on average. The U.S. published most of the articles, and the most active center was the University of Pittsburgh. The top 5 landmark papers were identified by four bibliometric indexes including citation, burstness, centrality, and usage 2013. The clustering process divided the whole area into nine research subtopics, and the two major important subtopics were "liver zonation" and "HCC." Using the "Part-of-Speech" technique, 1,743 terms representing scientific ideas were identified. After 2008, the bursting phrases were "liver development," "progenitor cells," "hepatic stellate cells," "liver regeneration," "liver fibrosis," "epithelial-mesenchymal transition," and etc.
    Conclusion: Using bibliometric methods, we quantitatively summarized the advancements and emerging trends in Wnt signaling in liver diseases. These bibliometric findings may pioneer the future direction of this field in the next few years, and further studies are needed.
    Keywords:  Bibliometric methods; Citespace; Liver disease; Wnt pathway
  12. J Nurs Scholarsh. 2019 Jul 04.
    Kokol P, Železnik D, Završnik J, Blažun Vošner H.
      PURPOSE: The aim of this paper was to present the results of the first study in which nursing research literature production was studied in the relation to country and health determinants.DESIGN: Bibliometric analysis was used.
    METHODS: The corpus of nursing publications was harvested from the Scopus indexing and abstracting database. Using research articles' metadata (funding acknowledgments, publication years, and author affiliations), we analyzed global trends in the nursing research literature production of funded and nonfunded publications. Next, we performed a regression analysis and correlation analysis relating nursing research productivity to health and country determinants.
    FINDINGS: The search resulted in 118,870 papers, among which 22.0% were funded (24.7% for G8 countries). Nursing literature production is exhibiting a positive trend. The United States is by far the most productive country in terms of funded and nonfunded literature production, although it is ranked only ninth in per capita production, for which Sweden is the most productive country regarding funded papers. The study also revealed that gross domestic product, human development factor, and gross national income were related to nursing research literature productivity.
    CONCLUSIONS: The positive trend in nursing research literature production (both funded and nonfunded) reveals a growth in nursing research funding. Regionally centered research literature production shows that the more developed and "rich" countries produce the majority of publications. A positive correlation is evident between country determinants and research literature production, as is a positive correlation between per capita literature research production and well-being and health determinants.
    CLINICAL RELEVANCE: Substantial growth in terms of nursing research literature production and research funding has been identified. While a limited amount of research in this area exists, this study revealed some interesting relations between nursing literature production and country and health determinants, which might motivate nursing researchers to pursue more intensive research and funders to support further growth of nursing research funding.
    Keywords:  Bibliometrics; country determinants; health determinants; nursing research literature production; research funding
  13. J Environ Manage. 2019 Jun 26. pii: S0301-4797(19)30867-9. [Epub ahead of print]247 462-473
    Zandi S, Nemati B, Jahanianfard D, Davarazar M, Sheikhnejad Y, Mostafaie A, Kamali M, Aminabhavi TM.
      In the current global situation, the release of large amounts of potential effluents into the environment is considered as one of the most important and challenging issues. Innovations in the treatment methods to deal with this problem are among the research priorities within the scientific communities. Even though innumerable methods including physicochemical and biological have been used, yet no proper sustainability of the methods have been introduced. Membrane bioreactors (MBRs) have gained world-wide attention in recent years, but still there is no report in the literature to map the global research on this subject. The present manuscript describes a scientometric study on the global trend on the application of MBRs during the period 1991-2018 by employing variables such as: (1) distribution of documents over the adopted duration, (2) type of documents in this area, (3) rate of contribution among the different countries, (4) rate of cooperation among the authors, (5) frequency of the keywords co-occurring, (6) cited authors, (7) cited journals, (8) the frequency of categories appeared and (9) the cited documents. A total of 2452 bibliographic records from the Web of Science database were retrieved and analysed to generate results, thereby to create geospatial maps for a better understanding. The findings reveal an increase in the number of papers published in the world, especially China and USA being the top. The existing studies in MBRs research focus mainly on subject categories of the performance and fouling as the main criteria of the sustainable application of MBRs. This study therefore, provides an extensive understanding about the trends and research patterns of MBRs efforts worldwide.
    Keywords:  Fouling; Geospatial mapping; Membrane bioreactors; Scientometric; Wastewater treatment
  14. J Med Libr Assoc. 2019 Jul;107(3): 374-383
    Watwood CL, Dean T.
      Objective: This study updates Haaland's 1999 dental hygiene mapping study. By identifying core journals and estimating database coverage, it characterizes changes in dental hygiene research and aids librarians in collection development and user education.Method: Cited references from a three-year (2015-2017) sample of core dental hygiene journals were collected, categorized into five formats, and analyzed by format and publication year according to Bradford's Law of Scattering. CINAHL Complete, MEDLINE, and EMBASE were surveyed to determine the indexing coverage of cited journals.
    Results: The number of cited journal titles increased from 389 in 1999 to 1,675 in 2018. Core Zone 1 titles increased from 5 to 11. Journal article citations increased from 69.5% of all citations in 1999 to 78.4% in the present study, whereas book citations decreased from 18.1% to 5.1%. A newly added category, "Internet sources," accounted for 8.4% of citations. Overall, 68.6% of citations were 10 years or younger versus 71.4% in 1999. Most Zone 1 and Zone 2 journals were specific to dentistry or dental hygiene.
    Conclusion: Notable changes since 1999 were an increased volume of literature and a shift from print to online sources, reflecting improved accessibility of the literature and greater Internet use. From 1999 to 2018, citations to journal articles increased, books decreased, websites appeared, and government publications increased slightly. These findings indicate that dental hygiene research is growing and that indexing coverage for this field has improved dramatically in the past two decades.
  15. Neurosurgery. 2019 Jul 02. pii: nyz240. [Epub ahead of print]
    Lepard JR, Walters BC.
      BACKGROUND: In the last 20 yr, the rate of neurosurgical guideline publication has increased. However, despite the higher volume and increasing emphasis on quality there remains no reliable means of measuring the overall impact of clinical practice guidelines (CPGs).OBJECTIVE: To utilize citation analysis to evaluate the dispersion of neurosurgical CPGs.
    METHODS: A list of neurosurgical guidelines was compiled by performing electronic searches using the Scopus (Elsevier, Amsterdam, Netherlands) and National Guideline Clearinghouse databases. The Scopus database was queried to obtain current publication and citation data for all included documents and categorized based upon recognized neurosurgical specialties. The h-index, R-index, h2-index, i10-index, and dissemination index (D-Index) were manually calculated for each subspecialty.
    RESULTS: After applying screening criteria the search yielded 372 neurosurgical CPGs, which were included for bibliometric analysis. The overall calculated h-index for neurosurgery was 56. When broken down by subspecialty trauma/critical care had the highest value at 35, followed by spine and peripheral nerve at 30, cerebrovascular at 28, tumor at 16, pediatrics at 14, miscellaneous at 11, and functional/stereotactic/pain at 6. Cerebrovascular neurosurgery was noted to have the highest D-Index at 3.4.
    CONCLUSION: A comprehensive framework is useful for guideline impact analysis. Bibliometric data provides a novel and adequate means of evaluating the successful dissemination of neurosurgical guidelines. There remains a paucity of data regarding implementation and clinical outcomes of individual guidelines.
    Keywords:  Bibliometrics; Citation metrics; Dissemination; H-index; Neurosurgical guidelines
  16. CNS Neurol Disord Drug Targets. 2019 Jul 02.
    Caballero-Villarraso J, Jiménez-Jiménez MJ, Escribano BM, Agüera E, Santamaría A, Túnez I.
      BACKGROUND: In recent years, numerous investigations focused on the pleiotropic actions of vitamin D have been carried out. These actions include the participation of this molecule in neurophysiological and neuropathological processes. As a consequence, abundant scientific literature on the role of this vitamin in neurodegenerative entities has emerged, even concerning clinical studies.OBJECTIVE: To identify the level of scientific evidence concerning the relation between vitamin D and neurodegenerative diseases, from a quantitative and qualitative perspective.
    METHODS: To describe, by means of a bibliometric analysis, the scientific production and its evolution through time in quantitative terms, regarding the implications of vitamin D in neurodegeneration. To analyse and present the degree of evidence in the aforementioned field of study, a systematic review of the literature focused on the most prevalent neurodegenerative diseases was carried out.
    RESULTS: We retrieved 848 articles in the bibliometric analysis, the majority of which were dated between the years 2010-2017. The most studied metabolite was the 25(OH)D3 and the most cited disease was multiple sclerosis. In the systematic review, we found studies about Alzheimer's and Parkinson's diseases and again, about multiple sclerosis prominently (in number and quality), with 12 randomised double-blind clinical trials.
    CONCLUSION: The research about vitamin D and its relations with neurodegenerative diseases shows a growing evolution over the last decade. More studies are needed to find correlations between the clinical severity of these diseases and the specific status of vitamin D and the genotypes related with them, which seems to be a future trend.
    Keywords:  VDR gene; bibliometric analysis; brain aging; multiple sclerosis; neurodegeneration; systematic review; vitamin D
  17. Per Med. 2019 Jul 03.
    Williams JR, Lorenzo D, Salerno J, Yeh VM, Mitrani VB, Kripalani S.
      A bibliometric analysis was conducted to describe trends in the publication of precision medicine literature over time. Searches identified 5552 articles with exponential growth from 2012 to 2018. Most were published in medical specialty journals, particularly oncology. Precision medicine definitions focused on tailored/individualized/personalized treatments and genetics/biology. Little attention was given to social and environmental determinants of health and health disparities. To fulfill the promise of precision medicine to positively impact broad populations, work is needed to develop the science of precision medicine for addressing health disparities and social and environmental determinants of health. While some precision medicine definitions include all factors that contribute to individual differences in health (e.g., genes, environments and lifestyles), future empirical work that includes and integrates all three areas is also required.
    Keywords:  bibliometric analysis; environmental determinants of health; health disparities; health equity; personalized medicine; precision health; precision medicine; social determinants of health; systematic review
  18. J Belg Soc Radiol. 2019 Jun 28. 103(1): 37
    Hong SJ, Yoon DY, Lim KJ, Moon JY, Yoon SJ, Seo YL, Yun EJ.
      Objectives: To provide a comprehensive review of radiological clinical practice guidelines (CPGs) and to establish their characteristics and impact in the field of radiology.Material and Methods: A MEDLINE search was performed for CPGs in which at least half of the authors were from the radiology or imaging department. The following information was extracted from each CPG: year of publication, journal, provider, number of authors, number of pages, number of references, collaboration, country of origin, radiological subspecialty, imaging modality used, topic, source of funding, and number and pattern of citations.
    Results: In total, 120 radiological CPGs published between July 2006 and June 2016 were identified. One hundred nine (90.8%) radiological CPGs were published in radiology journals, 96 (80.0%) were provided by the scientific community, 108 (90.0%) were collaborative studies, 64 (53.3%) originated from the United States, 36 (30.0%) were concerned with the field of vascular/interventional radiology, 38 (31.7%) used combined imaging techniques, 52 (43.3%) were focused on interpretation and management, and 118 (98.4%) were not funded. Radiological CPGs included a median of 8 authors, 9 pages, and 49 references. The median number of citations and annual citations were 18 (range, 0-540) and 3.5 (range, 0-75.6), respectively.
    Conclusion: Our study presents several interesting insights into the characteristics and impact of radiological CPGs.
    Keywords:  bibliometrics; clinical practice guideline; comprehensive review; publication; radiologic guideline; radiologists
  19. BMC Public Health. 2019 Jul 04. 19(1): 877
    Huang YK, Hanneke R, Jones RM.
      BACKGROUND: This study uses bibliometric analysis to describe the state of research about the association of NO2, PM2.5 and noise exposures - three traffic-related pollutants - with cardiometabolic disorders.METHODS: We retrieved references published 1994-2017 from Scopus and classified references with respect to exposure, health outcome and study design using index keywords. Temporal trend, top cited references, used index keywords and the number of hypothesis testing and non-hypothesis testing study design for each group were identified.
    RESULTS: Results show PM2.5 is the most frequently studied exposure (47%), followed by both NO2 and PM2.5 exposure (29%). Only 3% of references considered multiple exposures between NO2 and/or PM2.5 and noise, and these were published after 2008. While we observed a growing trend in studies with NO2 and/or PM2.5 and noise and diabetes in the last decade, there is a diminishing trend in studies with noise and diabetes. Different patterns of study designs were found through H/NH ratio, the number of references classified as having a hypothesis (H)-testing design relative to the number of references classified as having a non-hypothesis (NH)-testing design. Studies with NO2 and/or PM2.5 exposure are more likely to have a H-testing design, while those with noise exposure are more likely to have a NH-testing design, such as cross-sectional study design.
    CONCLUSIONS: We conclude with three themes about research trends. First, the study of simultaneous exposures to multiple pollutants is a current trend, and likely to continue. Second, the association between traffic-related pollutants and diabetes and metabolic symptoms is an area for growth in research. Third, the transition to the use of H-testing study designs to explore associations between noise and cardiometabolic outcomes may be supported by improved understanding of the mechanism of action, and/or improvements to the accuracy and precision of air pollution and noise exposure assessments for environmental health research.
    Keywords:  Bibliometric; Cardiometabolic disorders; Cardiovascular disease; Diabetes; Exposures; Fine particulate matter; Multiple; Nitrogen dioxide; Noise; PM2.5; Study design
  20. Gac Sanit. 2019 Jun 26. pii: S0213-9111(19)30119-0. [Epub ahead of print]
    Maroto-Navarro G, Ocaña-Riola R, Gil-García E, García-Calvente MDM.
      OBJECTIVE: To compare worldwide differences in scientific production on fatherhood and motherhood (quantity, start time and evolution over time), to determine the international geographic distribution of articles on fatherhood, and, to examine the relationship between the human development index (HDI), the global gender gap index (GGGI), and the number of articles on fatherhood.METHOD: Descriptive analysis of articles on fatherhood and motherhood from the Scopus database 1788-2016, and longitudinal analysis 2006-2015 of the relationship between scientific production on fatherhood, the HDI and the GGGI, by means of a multilevel model with Poisson distribution and extra-Poisson parameter.
    RESULTS: We observed four times fewer articles on fatherhood than on motherhood. Articles on fatherhood were developed later than those on motherhood, and most (85%) were published in the last two decades, when they increased more than articles on motherhood. We identified geographical inequalities, with North America, Europe and Oceania leading the way. There is a statistically significant relationship between the increase in the HDI and the GGGI in world countries, and the increase in the articles on fatherhood.
    CONCLUSIONS: Socially built knowledge around fatherhood and motherhood is unequal. It is essential to develop non-parcelled, undivided and non- reductionist knowledge in the reproductive field. It is necessary to make men visible as fathers in the scientific sphere, to break gender stereotypes, and to incorporate childrearing co-responsibility in social policies and practices as a matter of right.
    Keywords:  Desarrollo humano; Gender; Género; Human development; Inequidad social; Masculinidad; Masculinity; Paternidad; Paternity; Publicación científica; Scientific publishing; Social inequity
  21. Medicine (Baltimore). 2019 Jul;98(27): e16293
    Liu W, Zhang Y, Wu L, Yang X, Shi L.
      BACKGROUND: Bibliometric analysis highlights the key topics and studies which have shaped the understanding and management of a disease of interest. Here the top-cited articles on oral leukoplakia (OL) were characterized, and research patterns and trends were analyzed.METHODS: A comprehensive search was performed and identified in the Scopus database up to 22 February 2019 for the 100 most-cited articles on OL.
    RESULTS: The number of citations of the 100 selected articles varied from 116 to 1418, with a mean of 226.7 citations per article. Both Journal of Oral Pathology and Medicine and Oral Surgery Oral Medicine Oral Pathology Oral Radiology were journals with the most articles published (n = 10). Both Hong W.K. and Lippman S. were the most frequently contributing authors (n = 9). United States (n = 43) and M.D. Anderson Cancer Center (n = 12) was most contributing country and institution, respectively. Systematic reviews/meta-analysis (n = 3) and randomized controlled trial (n = 7) were study designs with high evidence level. It is noteworthy that the majority of high-quality articles were the research of chemopreventive drugs (n = 21) and molecular markers/targets (n = 10), which may indicate a trend of key topics.
    CONCLUSIONS: The results of this first citation analysis of the most-cited articles on OL provide a historical perspective on scientific evolution, and suggest further research trends and clinical practice in the field of OL.
  22. J Card Surg. 2019 Jul 03.
    Chan J, Mak TLA, Chu TSM, Hui TLY, Kwan LYA.
      INTRODUCTION: To gain a better understanding of the progression of coronary artery bypass grafting (CABG) and its impact on clinical practice, bibliometric citation analysis can be performed. Bibliometric citation analysis is a method of determining the most influential papers on a topic based on several citations and impact factor.METHOD: A search of the Thomson Reuters Web of Science citation indexing database and research platform was completed using the terms "CABG," "Coronary artery bypass graft," "Coronary artery," "bypass," and/or "bypass grafting." The returned dataset was sorted by the number of citations.
    RESULTS: The search yielded a total of 11 560 papers which were ranked in order of citations. New England Journal of Medicine published the most papers in the top 100 and generated the most significant number of citations with 20 papers in total followed by Journal of the American College of Cardiology. It also has the highest impact factor and 5-year impact fact in 2007 of 79.26 and 67.513, respectively.
    CONCLUSION: The most cited manuscripts by Serruys et al described a randomised trial comparing percutaneous coronary intervention and CABG for treating severe coronary artery disease. This work provides the most influential references related to CABG and serves as a guide as to the area of focus in CABG.
    Keywords:  bibliometric analysis; citations; coronary artery bypass grafting
  23. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi. 2019 Jun 20. 37(6): 425-431
    Liu Y, Fu LL, Lin MM, Wang ZP.
      Objective: To understand the research status of occupational asthma and provide information for related research on occupational asthma in the future. Methods: Papers on occupational asthma published from January 1998 to December 2017 had been retrieved in Web of Science core collection database on 9 October 2018. The data retrieval strategies were set as follows: #1 TS=(occupational AND asthma), #2 TS=(occupational AND asthmas), #3 TS=(occupational asthma OR occupational asthmas), #1 OR #2 OR #3. Three thousand two hundred and twelve publications were analyzed by bibliometric and visualizer. Results: Yearly output of articles in this field had been at a stable high level and annual total citations had been increasing. A significant positive correlation was found between the year and annual total citations (r=0.97, P<0.05). The most productive countries were European countries except the United States and Canada. Our country had few literatures accounting for 1.21 percent of the total and the research on occupational asthma in our country started relatively late which were published mainly from 2013 to 2017. The most studied category and journal were public environmental occupational health and Am J Ind Med respectively. "occupational exposure", "allergy" and "rhinitis" were key words with high frequency. Conclusion: Yearly output of publications of occupational asthma has been at a stable high level. Our country should do more research to provide a scientific basis for further prevention and management of occupational asthma.
    Keywords:  Bibliometrics; Occupational asthma
  24. Cureus. 2019 Apr 18. 11(4): e4498
    Liu B, Liu S, Alastra AJ, Mahato D, Tayag EC, Cortez VA, Siddiqi J.
      Introduction The Journal of Neurosurgery (JNS) published its first volume in 1944 and has evolved into the top cited journal in the field of neurosurgery. The aim of this study was to determine and characterize the 100 most cited (based on the total number of citations) vs. most relevant (based on the number of citations per year) articles originating in JNS. Methods The top 100 most cited articles in JNS were determined by searching the Web of Science database. Citations per year were additionally calculated for the top 1000 articles by total citations to rank the 100 most relevant articles. Results The median number of total citations for the 100 most cited articles in JNS was 505 (range 383-2200), and the median number of citations per year for the 100 most relevant articles was 21.88 (range 17.31-82.61). The median year of publication for the 100 most cited and most relevant articles was 1990 and 1999, respectively (P < 0.0001). Most articles originated in the United States in both categories (72% and 71%, respectively). The most common topic of study was cerebrovascular on both lists, followed by trauma on the most cited list vs. tumor on the most relevant list. The most relevant list also contained considerably more articles with a higher level of evidence such as systemic reviews/meta-analyses and prospective studies. Conclusions This study highlights the key contributing factors to the growth and flourishing of JNS. It also reveals several discrepancies between the most cited and most relevant articles, with the latter including more recently published articles, more studies addressing tumor, and more level I/1 (NHMRC/CEBM) evidence. Bibliometric analysis serves as a useful tool for clinicians and researchers to appraise published literature and understand the scientific foundation of modern neurosurgery.
    Keywords:  bibliometrics; citation analysis; neurosurgery; relevancy