Assessment of publication bias in meta-analyses of cardiovascular diseases
نویسندگان
چکیده
منابع مشابه
Assessment of publication bias in meta-analyses of cardiovascular diseases.
OBJECTIVE To examine variables related with publication bias assessment in a sample of systematic reviews with meta-analysis on cardiovascular diseases. DESIGN Systematic review of meta-analyses. SETTING Journals indexed in Medline and the Cochrane Library. STUDY POPULATION 225 reviews with meta-analysis published between 1990 and 2002. DATA COLLECTION Data from meta-analyses were gathe...
متن کاملEmpirical assessment of effect of publication bias on meta-analyses.
OBJECTIVE To assess the effect of publication bias on the results and conclusions of systematic reviews and meta-analyses. DESIGN Analysis of published meta-analyses by trim and fill method. STUDIES 48 reviews in Cochrane Database of Systematic Reviews that considered a binary endpoint and contained 10 or more individual studies. MAIN OUTCOME MEASURES Number of reviews with missing studie...
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INTRODUCTION Positive results have a greater chance of being published and outcomes that are statistically significant have a greater chance of being fully reported. One consequence of research underreporting is that it may influence the sample of studies that is available for a meta-analysis. Smaller studies are often characterized by larger effects in published meta-analyses, which can be pos...
متن کاملAssessment of funnel plot asymmetry and publication bias in reproductive health meta-analyses: an analytic survey
BACKGROUND Despite efforts to assure high methodological standards, systematic reviews may be affected by publication bias. The objective of this study was to evaluate the occurrence of publication bias in a collection of high quality systematic reviews on reproductive health. METHODS Systematic reviews included in the Reproductive Health Library (RHL), issue No 9, were assessed. Funnel plot ...
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OBJECTIVE To examine the potential for publication bias, data availability bias, and reviewer selection bias in recently published meta-analyses that use individual participant data and to investigate whether authors of such meta-analyses seemed aware of these issues. DESIGN In a database of 383 meta-analyses of individual participant data that were published between 1991 and March 2009, we s...
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ژورنال
عنوان ژورنال: Journal of Epidemiology & Community Health
سال: 2005
ISSN: 0143-005X
DOI: 10.1136/jech.2005.033027