Figure 1From: Reduced 30-day mortality in men after elective coronary artery bypass surgery with minimized extracorporeal circulation-a propensity score analysis Distribution of estimated native propensity score (not the logit of PS) stratified to type of extracorporeal circulation. There is a sufficient overlap of propensity scores between both groups. The lower panels show the density distributions of PS and the superimposed normal curves. CECC-conventional extracorporeal circulation; MECC-minimized extracorporeal circulation; PS-propensity score.Back to article page