Efforts to retrieve individual participant data sets for use in a meta-analysis result in moderate data sharing but many data sets remain missing

Individual participant data (IPD) meta-analysis synthesizes primary study data sets or the combination of primary study data sets with aggregate data (e.g., means and standard deviations [SDs]) from individual studies. Relative to traditional aggregate-data-only meta-analyses, an IPD meta-analysis has several advantages: reduction in ecological biases, improved power, the ability to test subgroups or moderators available only using IPD, and the completion and validation of meta-analytic databases [1,2].
Source: Journal of Clinical Epidemiology - Category: Epidemiology Authors: Tags: Brief Report Source Type: research