title: The impact of co-morbid disease on cancer control and survival following radical cystectomy.
abstract: OBJECTIVE
  We clarified the impact of concurrent medical disease on tumor control and survival following radical cystectomy.
  
  
  METHODS
  A total of 106 consecutive patients with clinically localized (cT2 or less) disease underwent radical cystectomy at the University of Michigan between 1997 and 1998. The Charlson Index, a validated risk adjustment index, was used to assess preoperative co-morbidity. The 3 primary end points were pathological stage, disease specific survival and overall survival. Logistic regression models were used to determine the relationship between Charlson Index and pathological stage, while Cox regression models were used for the 2 survival end points.
  
  
  RESULTS
  Of our study population 24% had a Charlson Index score of 2 or greater. Myocardial infarction, nonurothelial solid malignancies and cerebrovascular disease were the most common co-morbid conditions at 14%, 12% and 10%, respectively. On bivariate analysis the Charlson Index was significantly associated with decreased disease specific (p = 0.049) and overall (p = 0.016) survival. In a multivariate model the index was independently associated with decreased cancer specific survival (p = 0.049) and increased risk of extravesical disease (p = 0.033).
  
  
  CONCLUSIONS
  We demonstrated an association between co-morbid illness and adverse pathological and survival outcome following radical cystectomy. This finding underscores the value of assessing overall health before recommending and proceeding with surgery. Moreover, our results emphasize the need to adjust for co-morbidity when comparing outcomes following radical cystectomy.
authors.affiliation: Department of Urology, University of Michigan, Ann Arbor, MI, USA.
authors.forename: David C
authors.initials: DC
authors.lastname: Miller
authors.forename: David A
authors.initials: DA
authors.lastname: Taub
authors.forename: Rodney L
authors.initials: RL
authors.lastname: Dunn
authors.forename: James E
authors.initials: JE
authors.lastname: Montie
authors.forename: John T
authors.initials: JT
authors.lastname: Wei
mesh_terms: D000368:Aged; D015897:Comorbidity; D015653:Cystectomy; D005260:Female; D006801:Humans; D016015:Logistic Models; D008297:Male; D015999:Multivariate Analysis; D015996:Survival Rate; D001749:Urinary Bladder Neoplasms / Q000401:mortality* / Q000601:surgery