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Reporting of participant flow diagrams in published reports of randomized trials
Sally Hopewell, Allison Hirst, Gary S Collins, Sue Mallett, Ly-Mee Yu, Douglas G Altman
Trials , 2011, DOI: 10.1186/1745-6215-12-253
Abstract: A cross sectional review of all primary reports of randomized trials which included a CONSORT flow diagram indexed in PubMed core clinical journals (2009). We assessed the proportion of parallel group trial publications reporting specific items recommended by CONSORT for inclusion in a flow diagram.Of 469 primary reports of randomized trials, 263 (56%) included a CONSORT flow diagram of which 89% (237/263) were published in a CONSORT endorsing journal. Reports published in CONSORT endorsing journals were more likely to include a flow diagram (62%; 237/380 versus 29%; 26/89). Ninety percent (236/263) of reports which included a flow diagram had a parallel group design, of which 49% (116/236) evaluated drug interventions, 58% (137/236) were multicentre, and 79% (187/236) compared two study groups, with a median sample size of 213 participants. Eighty-one percent (191/236) reported the overall number of participants assessed for eligibility, 71% (168/236) the number excluded prior to randomization and 98% (231/236) the overall number randomized. Reasons for exclusion prior to randomization were more poorly reported. Ninety-four percent (223/236) reported the number of participants allocated to each arm of the trial. However, only 40% (95/236) reported the number who actually received the allocated intervention, 67% (158/236) the number lost to follow up in each arm of the trial, 61% (145/236) whether participants discontinued the intervention during the trial and 54% (128/236) the number included in the main analysis.Over half of published reports of randomized trials included a diagram showing the flow of participants through the trial. However, information was often missing from published flow diagrams, even in articles published in CONSORT endorsing journals. If important information is not reported it can be difficult and sometimes impossible to know if the conclusions of that trial are justified by the data presented.The CONSORT (CONsolidated Standards Of Reportin
Case reports and case series in Peru: status of a type of underestimated publication. Analysis of the peruvian medical journals indexed in SciELO-Peru, 1997-2008  [PDF]
Franco Romaní,Paolo Wong
Revista Peruana de Epidemiologia , 2009,
Abstract: Background: Case reports and series reports play a role in the progress of medical science, and also have a long history in medicine. Objective: To describe the current status and the evolution of the publication of case reports and series reports in Peruvian medical journals. Methods: Bibliometric descriptive study of Peruvian medical journals indexed in SciELO-Perú between 1997 and 2008. A database was constructed including the following variables: type of publication, speciality of the report, conditions under which the report was published, principal author's affiliation, title journal, and year of publication. The analysis was descriptive. Results: 526 communications were published within the time period, of which 452 (86%) were case reports and 74 (14%) were case series. The most commonly reviewed specialties were dermatology with 159 cases (30.2%), gastroenterology with 116 cases (22.1%), and infectious diseases with 83 cases (15.8%). The most common conditions that made the clinical case publishable were rare, infrequent or poorly described disease (46%) and unusual presentation or complication of the disease (30.8%). The Revista de Gastroenterología del Perú, Dermatología Peruana and Revista Médica Herediana were those with more cases published, 24.7%, 19.2% and 15.8% respectively. Conclusions: The publication of case reports and series in Peru has increased over the years, reflecting that this type of publication continues to play an important role in research and medical education.
Enhancing access to reports of randomized trials published world-wide – the contribution of EMBASE records to the Cochrane Central Register of Controlled Trials (CENTRAL) in The Cochrane Library
Carol Lefebvre, Anne Eisinga, Steve McDonald, Nina Paul
Emerging Themes in Epidemiology , 2008, DOI: 10.1186/1742-7622-5-13
Abstract: The objectives of this study are to devise a search strategy for identifying reports of randomized trials in EMBASE which are not already indexed as trials in MEDLINE and to make these reports easily accessible by including them in the Cochrane Central Register of Controlled Trials (CENTRAL) in The Cochrane Library, with the permission of Elsevier, the publishers of EMBASE.A highly sensitive search strategy was designed for EMBASE based on free-text and thesaurus terms which occurred frequently in the titles, abstracts, EMTREE terms (or some combination of these) of reports of trials indexed in EMBASE. This search strategy was run against EMBASE from 1980 to 2005 (1974 to 2005 for four of the terms) and records retrieved by the search, which were not already indexed as randomized trials in MEDLINE, were downloaded from EMBASE, printed and read. An analysis of the language of publication was conducted for the reports of trials published in 2005 (the most recent year completed at the time of this study).Twenty-two search terms were used (including nine which were later rejected due to poor cumulative precision). More than a third of a million records were downloaded and scanned and approximately 80,000 reports of trials were identified which were not already indexed as randomized trials in MEDLINE. These are now easily identifiable in CENTRAL, in The Cochrane Library. Cumulative sensitivity ranged from 0.1% to 60% and cumulative precision ranged from 8% to 61%. The truncated term 'random$' identified 60% of the total number of reports of trials but only 35% of the more than 130,000 records retrieved by this term were reports of trials. The language analysis for the sample year 2005 indicated that of the 18,427 reports indexed as randomized trials in MEDLINE, 959 (5%) were in languages other than English. The EMBASE search identified an additional 658 reports in languages other than English, of which the highest number were in Chinese (320).The results of the search to
Are Reports of Randomized Controlled Trials Improving over Time? A Systematic Review of 284 Articles Published in High-Impact General and Specialized Medical Journals  [PDF]
Matthew J. To, Jennifer Jones, Mohamed Emara, Alejandro R. Jadad
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0084779
Abstract: Background Inadequate reporting undermines findings of randomized controlled trials (RCTs). This study assessed and compared articles published in high-impact general medical and specialized journals. Methods Reports of RCTs published in high-impact general and specialized medical journals were identified through a search of MEDLINE from January to March of 1995, 2000, 2005, and 2010. Articles that provided original data on adult patients diagnosed with chronic conditions were included in the study. Data on trial characteristics, reporting of allocation concealment, quality score, and the presence of a trial flow diagram were extracted independently by two reviewers, and discrepancies were resolved by consensus or independent adjudication. Descriptive statistics were used for quantitative variables. Comparisons between general medical and specialized journals, and trends over time were performed using Chi-square tests. Results Reports of 284 trials were analyzed. There was a significantly higher proportion of RCTs published with adequate reporting of allocation concealment (p = 0.003), presentation of a trial flow diagram (p<0.0001) and high quality scores (p = 0.038) over time. Trials published in general medical journals had higher quality scores than those in specialized journals (p = 0.001), reported adequate allocation concealment more often (p = 0.013), and presented a trial flow diagram more often (p<0.001). Interpretation We found significant improvements in reporting quality of RCTs published in high-impact factor journals over the last fifteen years. These improvements are likely attributed to concerted international efforts to improve reporting quality such as CONSORT. There is still much room for improvement, especially among specialized journals.
Tendencias de los enfoques cualitativos y cuantitativos en artículos publicados en scientific library on line (scielo)
Cárcamo Vásquez,Héctor; Méndez Bustos,Pablo; Rebolledo Carre?o,Alexis;
Paradígma , 2009,
Abstract: this article accounts for the analysis of the procedures employed in the research of educational sciences: how are these procedures presented? what are the strategies most frequently declared?; what have the most relevant trends in the past few years? we aim at revealing the trajectories traced by the applied procedures in the collection and analysis of the data. in order to do so, bibliometric techniques have been applied by resourcing to secondary information, considering specifically the journals indexed in the scientific library online (scielo), which declared in its mission as a general objective, the educational sciences. a quantitative methodology of a descriptive reach was employed. the research was based on three main aspects, methodology, information revealing and data analysis. the results showed there is internal coherence in the reviewed articles as to the decisions made according to the aims. besides that, the presence of quantitative and qualitative research was evident, but the use of methodologies combining both is not.
Anthropometric indicators of abdominal obesity: review of the papers indexed on SciELO electronic library
Claudio Barnabé dos Santos Cavalcanti,Sineide Cristina Barbosa do Egito Carvalho,Mauro Virgilio Gomes de Barros
Revista Brasileira de Cineantropometria e Desempenho Humano , 2009,
Abstract: A systematic review of original articles published between 1993 and 2007 and indexed in SciELO (Scientific Electronic Library Online) was carried out to identify the anthropometric indicators used to assess abdominal obesity in different target subgroups, and to provide an overview of available evidence regarding the relationship between these anthropometric indicators and obesity-associated comorbidities. The articles were analyzed and the following data were collected:year of publication, sample size and age, anthropometric measure used to detect abdominal obesity, and main results of the study. The review comprised 47 articles which met all inclusion criteria, most of them published over the last 5 years. Waist-hip ratio and waist circumference were used as indicators of abdominal obesity in 34 and 11 of the articles reviewed, respectively. With respect to age range, the samples were heterogeneous in most of the studies (n=27) and ten included adolescents. Four studies were conducted on elderly subjects and three included children, but none exclusively involved adolescents as the target population. The sample size was larger than 500 in 26 studies. Despite disagreement in terms of the degree of correlation, the studies generally showed that the anthropometric indicators of abdominal obesity were correlated with hypertension, diabetes, dyslipidemias, and coronary heart risk. The results of this review suggest that abdominal obesity is associated with metabolic diseases. However, there is a lack of studies involving the adolescent population, suggesting the need for further research in this area.
Medicina y Seguridad del Trabajo, evaluación desde su ingreso en la Red SciELO (Scientific Electronic Library Online)
Bernal Zamora,Ascensión; Maqueda Blasco,Jerónimo; Veiga de Cabo,Jorge; D'Agostino,Marcelo;
Medicina y Seguridad del Trabajo , 2012, DOI: 10.4321/S0465-546X2012000100001
Abstract: this editorial is a review of key content and editorial changes suffered by the medicina y seguridad del trabajo for the past 5 years, coinciding with the period since joining scielo (scientific electronic library online) (2007-2011). in the study period there have been more of 190,000 articles access, an impact factor (if) scielo of 1.22, increase the number of articles received from different countries of america and europe and the journal has been indexed in various international bibliographic databases (scielo, directory of open access journals (doaj), google schoolar, eprints in library and information science (e-lis) and latindex) and national (ibecs, emi, base data national research council (csic), and cuiden dialnet). editorial quality and contents have also been enhanced with various modifications and changes, and the pan american health organization, regional office for the americas of the world health organization (paho/who) is involved in the journal edition. there was an increase of over 40% of articles published in the last five years compared to previous period, from 118 to 202 items. the number of editorials and clinical cases are also increasing at a rate of 40%. original articles are increased by just over 50% (53 versus 109), finding the largest increase in review articles (3 in the first period and 25 in the last five-years study period). finally, in 2011, medicina y seguridad del trabajo has first published a special number about psychosocial factors, and mental health occupational health including 15 review articles on current topics by specialists in the field. this results, encourage editorial team eagerness to continue working to improve quality and visibility of the journal over the coming years.
Medicina y Seguridad del Trabajo, evaluación desde su ingreso en la Red SciELO (Scientific Electronic Library Online) Medicina y Seguridad del Trabajo, evaluation since joining SciELO (Scientific Electronic Library Online)  [cached]
Ascensión Bernal Zamora,Jerónimo Maqueda Blasco,Jorge Veiga de Cabo,Marcelo D'Agostino
Medicina y Seguridad del Trabajo , 2012,
Abstract: Se realiza una revisión de los principales cambios editoriales y de contenido sufridos por la revista de Medicina y Seguridad del Trabajo durante los últimos 5 a os, coincidiendo con el periodo desde que ingresó en SciELO (ScientificElectronic Library Online) (2007-2011). En el periodo estudiado se han realizado un número de consultas a sus artículos superior a los 190 mil, ha tenido un Factor de Impacto (FI) SciELO del 1.22, se ha incrementado el número de artículos recibidos de diferentes países de América y Europa y se la revista ha sido indizada en diferentes Bases de Datos bibliográficas internacionales (SciELO, Directory of Open Access Journals (DOAJ), Google Schoolar, Eprints in Library and InformationScience (E-LIS) y LATINDEX) y nacionales (IBECS, IME, Base de Datos del Consejo Superior de Investigaciones Científicas (CSIC), DIALNET y CUIDEN). La calidad editorial y de contenidos también se han visto mejoradas con diferentes modificaciones y cambios introducidos. Se cuenta con la participación editorial de la Organización Panamericana de la Salud, Oficina regional para las Américas de la Organización M undial del Salud (OPS/OMS), se ha producido un incremento superior al 40% de los artículos publicados en el último quinquenio respecto al periodo anterior, pasando de 118 a 202 artículos. El número de Editoriales y casos Clínicos también se incrementan en un porcentaje del 40 %. Los Artículos Originales se incrementan en algo más del 50% (53 versus 109), encontrando el mayor incremento en los Artículos de revisión que pasan de 3 en el primer anterior a 25 en el periodo de estudio. Por último, en 2011, Medicina y Seguridad en el Trabajo ha publicado por primera vez un número monográfico especial sobre Factores Psicosociales, Salud laboral y Salud Mental que incluye 15 artículos de revisión sobre temas de actualidad realizados por especialistas en la materia. Los resultados estimulan el afán por del Equipo Editorial por seguir trabajando para mejorar de calidad y visibilidad de la revista durante los próximos a os. This Editorial is a review of key content and editorial changes suffered by the Medicina y Seguridad del Trabajo for the past 5 years, coinciding with the period since joining SciELO (Scientific Electronic Library Online) (2007-2011). In the study period there have been more of 190,000 articles access, an impact factor (IF) SciELO of 1.22, increase the number of articles received from different countries of America and Europe and the journal has been indexed in various international bibliographic databases (SciELO, Directory of Open Acces
The portion of German, English, and Multilanguage for journals published in Germany and indexed in the JCR
Mohammad Hossein Biglu
Cybrarians Journal , 2008,
Abstract: A total number of 432 German journals in 2000 and 427 journals in 2005 listed in the Science Edition of the Journal Citation Reports (JCR) were analysed. The study showed that the portion of German journals entering material to the JCR data bank in 2005 counted 4%. From a total number of 6,088 journals in the JCR, 427 (7%) were published in Germany. The 6,088 journals in the JCR produced 847,114 articles, 50,276 (6%) appeared in the German journals. Of the 22,353,992 citations in 2005, 861,190 (4%) came from German journals. Analysis of data showed that there is a correlation between total-citation and Impact Factors of German journals indexed in the JCR. 32.9% of all total-citation by German journals in the JCR in 2005 belong to the 7% of journals with IF > 3, and 67.1% of total-citation belong to 93% of journals with IF< 3.From a total number of 433 German journals in 2000 indexed in the JCR, 91% of all population has self-citation rate from 1% to 79%, and from all 427 German journals 96% of all population in 2005 has self-citation rate from 1% to 72%. The study further showed that the self-citation rates of all German journals in 2000 as well as in 2005 stayed at 12%. The number of total citation and self-citation in 2005 with compare to the same set of journals in 2000 has respectively 26.78% and 22.45% increased. The mean value of all German journals IFs in 2005 showed 0.31 increases with compare to the mean value of all German journals IFs in the year 2000.
Journal selection and indexing for Index Medicus and Chinese periodicals indexed in Index Medicus  [cached]
ZHOU Qing-Hui
Zhong Xi Yi Jie He Xue Bao , 2005,
Abstract: Index Medicus / MEDLINE / PubMed published by U.S. National Library of Medicine (NLM) is the most important and commonly used biomedical literature retrieval system in the world. According to the "List of Journals Indexed in Index Medicus (2004)", 4 098 journals are indexed for Index Medicus, including 70 journals from mainland China and Hong Kong and 9 journals from Taiwan. Journal of Chinese Integrative Medicine established in May, 2003 is indexed in Index Medicus in 2004. This article outlines the critical elements of journal selection for Index Medicus/MEDLINE and the journal selection process for indexing at NLM, and introduces some measures for the Journal of Chinese Integrative Medicine being indexed in Index Medicus / MEDLINE.
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