Patient and disease-specific factors and their influence on urinary reconstruction choice at a referral center

Factors That Influence Selectionof Urinary Diversion Among Bladder Cancer Patients in 3 Community-based Integrated Health Care Systems

OBJECTIVE

To assess the relative contributions of patient and surgeon factors for predicting selection of ileal conduit (IC), neobladder (NB), or continent pouch (CP) urinary diversions (UD) for patients diagnosed with muscle-invasive/high-risk nonmuscle invasive bladder cancer. This information is needed to enhance research comparing cancer survivors' outcomes across different surgical treatment options.

METHODS

Bladder cancer patients' age ≥21 years with cystectomy/UD performed from January 2010 to June 2015 in 3 Kaiser Permanente regions were included. All patient and surgeon data were obtained from electronic health records. A mixed effects logistic regression model was used treating surgeon as a random effect and region as a fixed effect.

RESULTS

Of 991 eligible patients, 794 (80%) received IC. One hundred sixty-nine surgeons performed the surgeries and accounted for a sizeable proportion of the variability in patient receipt of UD (intraclass correlation coefficient = 0.26). The multilevel model with only patient factors showed good fit (area under the curve = 0.93, Hosmer-Lemeshow test P = .44), and older age, female sex, estimated glomerular filtration rate <45, 4+ comorbidity index score, and stage III/IV tumors were associated with higher odds of receiving an IC vs neobladder/continent pouch. However, including surgeon factors (annual cystectomy volume, specialty training, clinical tenure) had no association (P = .29).

CONCLUSION

In this community setting, patient factors were major predictors of UD received. Surgeons also played a substantial role, yet clinical training and experience were not major predictors. Surgeon factors such as beliefs about UD options and outcomes should be explored.

Socioeconomic status is associated with urinary diversion utilization after radical cystectomy for bladder cancer

PURPOSE

To assess socioeconomic disparities in urinary diversion utilization in a contemporary American cohort.

METHODS

In the National Cancer Database, we identified 4538 patients who underwent cystectomy with urinary diversion for clinical T1-2N0M0 bladder cancer from 2010 to 2013. Multivariable logistic regression was used to identify predictors of urinary diversion type: ileal conduit (IC), continent cutaneous reservoir (CCR), or orthotopic neobladder (ON). Covariates included age, gender, race, income, Charlson score, clinical T stage, hospital cystectomy volume, teaching status, and surgical approach. Subgroup analysis by hospital volume (low, intermediate, or high) and teaching status (academic or non-academic) was performed to ascertain the impact of regionalization on urinary diversion use.

RESULTS

The final cohort included 4066 (89.6 %) patients with IC, 292 (6.4 %) with CCR, and 180 (4.0 %) with ON. On multivariable analysis, younger age (p < .01), higher income (p < .01), and high cystectomy volume predicted increased use of CCR and ON. Female gender predicted increased use of CCR versus IC (p < .01), and academic hospital status predicted increased use of ON versus IC (p = .04). On subgroup analysis, after further adjustment for hospital volume and teaching status, higher income remained an independent predictor of ON use.

CONCLUSIONS

Despite regionalization of care, higher income patients are more likely to receive complex urinary diversions after radical cystectomy. Other related socioeconomic factors, especially patient education, may influence this practice pattern.