Figure 6.
Propensity score and proportion of confounders before and after PSM. (A) Propensity score and proportion of confounders before PSM in aspirin group. (B) Propensity score and proportion of confounders after PSM in aspirin group. (C) Propensity score and proportion of confounders before PSM in control group. (D) Propensity score and proportion of confounders after PSM in control group.