Re: Guzzo et al.: Prediction of mortality after radical prostatectomy by Charlson comorbidity index. (Urology 2010;76:553-557).

摘要

We read with great interest the study by Guzzo and co-workers studying the relationship between the Charlson comorbidity index and mortality after radical prostatectomy in an unprecedentedly large population. Remarkably, the proportion of patients with a Charlson score of 2 and a significantly increased non-prostate cancer mortality comprised only 1% of this sample.1 In our series of 2205 patients, there was a clearer discrimination of the survival curves and a larger proportion of patients belonging to higher-risk groups (Figure 1). Possibly, the higher mean age (64 vs 58 years) and a different way of comorbidity data collection (in addition to the discharge records, the preoperative cardiopulmo-nary risk assessment was used as source of information) may explain these slightly different observations.