Fig. 4
From: On the use of propensity scores in case of rare exposure
Effect of strength of confounding. Bias of exposure effect, variability ratio, 1 - coverage and RMSE according to strength of confounding and mean sample size, for one continuous and one dichotomous confounder, σ B,C =0, H R=1, r c =50 % and p=5 %, with weighting by inverse of PS using ATE and ATT weights and PS-matching