Figure 1From: Assessment of hospital performance with a case-mix standardized mortality model using an existing administrative database in Japan Predicted and observed mortality by risk decile (n = 939,358). The horizontal axis shows ten predicted mortality ranges. The total number of patients in these ranges is shown in the lower columns. The observed mortality rate with its associated 95% confidence interval is shown by the dark square. The predicted mortality rate is indicated by bar graphs. The c-index of the model is 0.882.Back to article page