Association between unreported outcomes and effect size estimates in Cochrane meta-analyses

Ref ID 637
First Author T. A. Furukawa
Journal JAMA
Year Of Publishing 2007
URL https://pubmed.ncbi.nlm.nih.gov/17284696/
Keywords Cochrane
General medical
Problem(s) Multiplicity of outcomes and lack of pre-specification for outcome reporting
Number of systematic reviews included 500
Summary of Findings Approximately half of the RCTs identified by Cochrane reviews did not contribute to the pooled effect size estimates for patient-important outcomes in their meta-analyses. There appeared to be an inverse association between percentage of RCTs contributing and effect size.
Did the article find that the problem(s) led to qualitative changes in interpretation of the results? No
Are the methods of the article described in enough detail to replicate the study? No