Characteristics of meta-analyses and their component studies in the Cochrane Database of Systematic Reviews: a cross-sectional, descriptive analysis

Ref ID 435
First Author J. Davey
Journal BMC MEDICAL RESEARCH METHODOLOGY
Year Of Publishing 2011
URL https://pubmed.ncbi.nlm.nih.gov/22114982/
Keywords Cochrane
General medical
Problem(s) Small number of trials in meta-analyses
Number of systematic reviews included 2321
Summary of Findings The median number of studies included in the meta-analyses with at least two studies was three (interquartile range 2 to 6). Sample sizes of individual studies ranged from 2 to 1,242,071, with a median of 91 participants.)
Did the article find that the problem(s) led to qualitative changes in interpretation of the results? Not Applicable
Are the methods of the article described in enough detail to replicate the study? Yes