Identifying high surgical risk in muscle-invasive bladder cancer (MIBC) patients undergoing radical cystectomy (RC).
2018
460Background: Although RC is the standard treatment for MIBC, it is associated with non-negligible morbidity and mortality. Given the advanced age and prevalence of comorbidities in MIBC patients, many are suboptimal RC candidates. We sought to develop a prediction rule for determining high surgical risk using routinely available pre-surgical variables. Methods: We identified N=8,634 patients with MIBC (cT2-T4aN0M0) who underwent RC, without perioperative chemotherapy, within the National Cancer Database (2003-2012). Using multi-state modeling, we calculated time spent in 3 health states: hospitalized, discharged and death over 90 days post-RC. Predictors were selected in a stepwise manner. Cross validation was performed leaving one of 6 geographic regions out to assess model performance. Time spent in each state was weighted by utility (0=death, 1=full health) to determine 90d quality-adjusted survival (QAS) as a composite of morbidity and mortality. Results: Median age: 69y (IQR 62-78), mean length of ...
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