Influence of pilot and small trials in meta-analyses of behavioral interventions: a meta-epidemiological study.
Beets Michael W, Weaver R Glenn, Ioannidis John P A, +4 more·Systematic reviews
BACKGROUND: Pilot/feasibility or studies with small sample sizes may be associated with inflated effects. This study explores the vibration of effect sizes (VoE) in meta-analyses when considering different inclusion criteria based upon sample size or pilot/feasibility status. METHODS: Searches were to identify systema…