A finite-sample valid method discovers and selects covariate-interpretable subgroups with effect modification in matched observational studies, exactly controlling subgroup-level FDR and incorporating sensitivity analysis for unmeasured confounding.
Lettingp i =P(L i = 1| F,Z)andp ∗ = Γ 1+Γ, we define ∆g = P i∈g ri(pi −p ∗) P i∈g r2 i p∗(1−p ∗) 1/2
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Adaptive discovery of effect modification in matched observational studies
A finite-sample valid method discovers and selects covariate-interpretable subgroups with effect modification in matched observational studies, exactly controlling subgroup-level FDR and incorporating sensitivity analysis for unmeasured confounding.