Fig. 2

Impact of the stratification of patients younger than 80 years by the ASA classification on 90-day mortality and 5-year competing (non-bladder cancer) mortality rates after primary stratification by the age-adjusted Charlson score [16] (in brackets: 95% confidence intervals). Within the same risk group indicated by the age-adjusted Charlson score, the 90-day mortality differed by the factor 5-8 and 5-year competing mortality differed approximately by the factor 3 between patients with an ASA class 1-2 versus those with a ASA class 3-4. Such large differences are probably relevant for clinical decision making. For age-adjustment of the Charlson score, 1 point is added for an age of 50-59 years, 2 points for an age of 60-69 years, 3 points for an age of 70-79 years, 4 points for an age of 80-89 years and 5 points for an age of 90-99 years [16]