2 papers
stat.ME2026
Application of Propensity Score Models and Causal Estimators in Observational Studies under Model Misspecification
Apu Chandra Das, Sakib Salam, Md Robiul Islam Talukder +3
Propensity score (PS) methods are widely used in observational studies to reduce confounding and estimate causal treatment effects. However, the validity of PS-based causal estimat…
stat.ME2026
Improving operating characteristics of clinical trials by augmenting control arm using propensity score-weighted borrowing-by-parts power prior
Apu Chandra Das, Sakib Salam, Aninda Roy +3
Borrowing external data can improve estimation efficiency but may introduce bias when populations differ in covariate distributions or outcome variability. A proper balance needs t…