Fig. 1
From: Confounding-adjustment methods for the causal difference in medians
Bias in estimates of the causal difference in medians obtained under each method, for each skewness scenario and confounding setting in the simulated datasets (1000 datasets per skewness scenario). Scenarios 1 to 4 consider increasing levels of skewness, with Scenario 1 corresponding to the weakest and Scenario 4 corresponding to the highest skewness