Impact of comorbidity on survival of invasive bladder cancer patients, 1996-2007: a Danish population-based cohort study.

Objectives: To examine (i) the prevalence of comorbidity among invasive bladder cancer (IBC) patients, and (ii) the effect of comorbidity on IBC survival and mortality in Northern Denmark. Comorbidity has shown to be associated with treatment selection and survival in patients who undergo radical cystectomy for IBC.

Methods: Patients with a diagnosis of IBC from Danish hospitals between 1996 and 2007 within a population of 1.