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2.
Elife ; 92020 03 25.
Artículo en Inglés | MEDLINE | ID: mdl-32209226

RESUMEN

eLife is making changes to its policies on peer review in response to the impact of COVID-19 on the scientific community.


Asunto(s)
Betacoronavirus , Infecciones por Coronavirus , Políticas Editoriales , Pandemias , Revisión de la Investigación por Pares , Neumonía Viral , Revisión de la Investigación por Pares/tendencias , Publicaciones Periódicas como Asunto , Preimpresos como Asunto
9.
J Assoc Physicians India ; 68(3): 14-18, 2020 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-32138476

RESUMEN

Aim: : Appropriate calculation of sample size and choosing the correct sampling technique are of paramount importance to produce studies that are capable of drawing clinically relevant conclusions with generalizability of results. The current study was planned with an objective to determine reporting of sample size and sampling considerations in clinical research articles published in the year 2017. Methods: One high impact factor journal and one low impact factor journal belonging to the specialities of Medicine, Surgery, Obstetrics and Gynaecology, Paediatrics and Pharmacology were selected and checked for adherence to reporting of sample size and sampling considerations. Results: A total of 264 articles were examined. These consisted of 55 interventional studies and 209 observational studies. Interventional studies showed higher reporting of sample size calculation/justification for sample size selection (29.1%) compared to observational studies (14.8%). Only 33 out of 155 articles from high impact factor journals and 14 out of 109 articles from low impact factor journals mentioned about sample size calculation or justified the sample size. In addition to this, merely 68 out of 209 observational studies mentioned about sampling considerations such as sampling technique/participant follow up/matching details. Conclusion: The reporting of sample size and sampling considerations was found to be low in both high impact factor and low impact factor journals. Though interventional studies had better reporting compared to other study designs, the reporting was still not adequate and there is an immense scope for improvement.


Asunto(s)
Periodismo Médico , Publicaciones Periódicas como Asunto , Publicaciones , Niño , Humanos , Factor de Impacto de la Revista , Obstetricia , Proyectos de Investigación , Tamaño de la Muestra
10.
Braz Dent J ; 31(1): 10-18, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32159699

RESUMEN

This study assessed bibliometric characteristics of all articles published in Brazilian Dental Journal (BDJ) in its 30 years of existence (1990-2019) and factors associated with citation rates. A document search was carried out in Scopus in December, 2019 and information about the articles were exported, including citations. Type of study and main subject in each article were categorized. Number of citations was categorized in tertiles. Logistic regression models were used to assess the association between variables related to articles' characteristics and number of citations. In 30 years, 1705 articles were published and 18507 citations received, with average 57 articles and 334 pages published yearly and 10.9 cites/doc. The most frequent types of study were laboratorial (63%), clinical (18.5%), and case reports (11%); the main subjects were dental materials (21.6%), endodontics (19.3%), and oral pathology/stomatology (13.1%). Most articles had origin in Brazil (90%), followed by USA (4.6%) and UK (1.5%). Aside from BDJ, Journal of Endodontics (3.5%) and International Endodontic Journal (2.2%) were journals that most often cited BDJ. Main origins of citations were Brazil (36.7%), USA (10.6%), and India (9%). Older articles had higher odds to be highly cited (12% increase/year), longer articles had lower odds (9% decrease/page). Narrative reviews and epidemiological studies were associated with more citations and systematic reviews with less citations. In conclusion, BDJ covered many subjects and study types in 30 years, showing increased growth in international audience. The journal may be regarded as one of the leading Brazilian journals in dentistry published in English.


Asunto(s)
Endodoncia , Publicaciones Periódicas como Asunto , Bibliometría , Brasil , Odontología , India
11.
Braz Dent J ; 31(1): 3-9, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32159702

RESUMEN

The Brazilian Dental Journal (BDJ) was officially launched in 1990, stimulated by the courage and boldness of researchers dedicated to teaching and research in dentistry. The journal was conceived in a worldwide coverage and universal language to allow publication of the results of Brazilian studies, which otherwise would not be accessible to the scientific dental community. In the year we celebrate the thirtieth anniversary of BDJ, this article presents a brief overview of Brazilian dental research and a bibliometric analysis of the articles published in this journal as a contribution to our readers and fellow researchers. The purpose was to identify the mot frequent categories of study, the most published areas of dentistry and BDJ's top 50 most-cited articles in the Scopus and Google Scholar databases. A search was performed on all BDJ online issues published from 1990 to 2019. In this period, BDJ published 1,710 articles. Based on their distribution by category of study, 557 articles were in the basic research/dental materials area, 527 in the basic research/biology area and 280 in the clinical research area. Eight articles were cited more than 100 times in the Scopus database and 266 times in the Google Scholar database. Endodontics was the most published area. This overview of BDJ production over those 30 years allows establishing a profile of the characteristics, impact and trends of the published studies, as well as the journal's contribution to the top 50 most-cited articles in the Scopus and Google Scholar databases.


Asunto(s)
Endodoncia , Publicaciones Periódicas como Asunto , Bibliometría , Brasil , Investigación Dental , Odontología
12.
Neuron ; 105(4): 598-599, 2020 02 19.
Artículo en Inglés | MEDLINE | ID: mdl-32078794
14.
Biochem Med (Zagreb) ; 30(1): 010708, 2020 Feb 15.
Artículo en Inglés | MEDLINE | ID: mdl-32063731

RESUMEN

Introduction: First impression on potential readers is created by the title; therefore, authors should give importance to the title structure. The aim of this study was to establish whether articles created by a smaller number of authors and with shorter, descriptive or declarative titles gain more citations and whether article title length and number of authors correlate to the number of citations. Material and methods: A cross-sectional study on article citation data for 30 scientific journals published in 2016 in Medical Laboratory Technology field according to Web of Science database was conducted. The type of article, type of title, as well as number of words in the title and number of authors was recorded. Results: In the group of original articles (N = 2623), articles with declarative titles (N = 336, 13%) showed statistically higher number of citations in multiple comparison analysis when compared to descriptive titles (P < 0.001). No correlation was found between number of citations and title word count (r = 0.07, P < 0.001) nor between number of citations and number of authors in group of original articles (r = 0.09, P < 0.001). Original articles with descriptive titles longer than 15 words or with more than six authors are cited more (P = 0.005 and P < 0.001, respectively). Conclusion: Based on results of our study, titles do matter. Therefore, authors of original articles might want to consider including their findings in the title and having longer titles.


Asunto(s)
Ciencia del Laboratorio Clínico , Estudios Transversales , Bases de Datos Factuales , Humanos , Publicaciones Periódicas como Asunto
15.
J Evid Based Med ; 13(1): 34-41, 2020 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-32086993

RESUMEN

OBJECTIVE: To investigate authorship trends in Cochrane reviews from 1996 to 2018, and to examine if the authorship criteria from the International Committee of Medical Journal Editors (ICMJE) were met for Cochrane reviews with more than 15 authors based on the text in the section "Contributions of authors." METHODS: The median number of authors per review was calculated, and authorship trends within each editorial group were analyzed. The section "Contributions of authors" was assessed about the first and second authorship criteria from the ICMJE for reviews with more than 15 authors. RESULTS: A total of 7447 Cochrane reviews were studied based on data from the Cochrane Database of Systematic Reviews. The median number of authors per Cochrane review was 3 in 1996 (IQR 2.5-3, range 2-3), 4 in 2007 (IQR 3-5, range 1-13), and 5 in 2018 (IQR 4-7, range 2-22). Within each editorial group, the total number of authors either increased (26/55, 47%) or was unchanged (29/55, 53%). Based on the text in "Contributions of authors," 59% (16/27) of the reviews with more than 15 authors had authors that did not fulfil the ICMJE authorship criteria. However, the text in "Contributions of authors" was often difficult to interpret. CONCLUSIONS: The number of authors per Cochrane review gradually increased from 1996 to 2018. The ICMJE authorship criteria were probably not met by all authors in more than half of the reviews with more than 15 authors.


Asunto(s)
Autoria , Publicaciones Periódicas como Asunto , Revisiones Sistemáticas como Asunto
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