Fig. 2From: Urgent surgery after emergency presentation for colorectal cancer has no impact on overall and disease-free survival: a propensity score analysisDistribution of propensity scores before and after propensity score analysis. The left upper and lower panels show the distribution of the propensity scores for patients with urgent and elective operation before the matching procedure. The right upper and lower panels demonstrate the distribution of the propensity scores after bipartite propensity score matchingBack to article page