Black Patients with Colorectal Cancer Have More Advanced Cancer Stage at Time of Diagnosis: A Community-Based Safety-Net Hospital Experience.

Colorectal cancer (CRC) remains a leading cause of morbidity and mortality in the U.S. Disparities in access to care contribute to advanced CRC stage at diagnosis, and these disparities are most pronounced among underserved populations and ethnic minorities. We aim to evaluate race/ethnicity-specific disparities in CRC stage at diagnosis among an ethnically diverse, urban safety-net hospital. We retrospectively evaluated all adult CRC patients diagnosed from January 1, 2009 to October 1, 2015. CRC cases were confirmed by histopathology specimens from biopsies and/or surgical resection. CRC staging utilized American Joint Committee on Cancer (AJCC) staging systems and were stratified by race/ethnicity. Multivariate logistic regression models were utilized to evaluate disparities in AJCC stage at presentation (stage 3-4 vs. stage 0-2). Among 311 patients with CRC [51.5% male, 25.3% black, 18.7% Hispanic, 32.0% Asian, and mean age at diagnosis 58.1 years (SD 10.3)] 61.4% had advanced ACC stage 3-4 CRC at diagnosis. Among black patients with CRC, 73.3% had AJCC stage 3-4 cancer at time of diagnosis. On multivariate regression, blacks were nearly four times more likely to have advanced AJCC stage 3-4 CRC at diagnosis compared to whites (OR 3.70; 95% CI 0.97-14.11; p = 0.055). Among a diverse underserved population, over 60% of CRC were AJCC stage 3-4 at diagnosis, and nearly 75% of blacks with CRC had AJCC stage 3-4 at diagnosis. Advanced stage CRC at diagnosis limits options for potentially curative therapies, and increases the risk for cancer recurrence and mortality.