Estimating average treatment effects for clustered RCTs with recruitment bias
Peter Z. Schochet
Abstract:In clustered randomized controlled trials (RCTs), sample recruitment is often conducted after cluster randomization. This timing can lead to recruitment bias if access to the intervention affects the composition of study‐eligible cluster entrants and study consenters. This article develops a potential outcomes framework in such settings that yields a causal estimand that pertains to the always‐recruited in either research condition. A consistent inverse probability weighting (IPW) estimator is developed using … Show more
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