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? N/A
Are the methods of the article described in enough detail to replicate the study? Yes