Fig. 2From: Double-adjustment in propensity score matching analysis: choosing a threshold for considering residual imbalanceEstimated average treatment effect in the treated (ATT) on the absolute risk difference scale (median with 2.5th and 97.5th percentiles), in (a) the linear, additive scenario and (b) the non-linear, non-additive scenario. The double-robust estimator was adjusted for unbalanced covariates using standardized absolute mean difference (SMD) thresholdsBack to article page