High-risk rural surgical patients and poor access to elective colorectal cancer surgery: insight for multilevel intervention for rural America.

Background: Colorectal cancer (CRC) is a leading cause of death in rural America. Rural populations are large and heterogeneous, yet patient-related drivers of inequities in CRC access are understudied. This study aimed to identify vulnerable rural populations at lower odds of undergoing elective CRC surgery.

Methods: Evaluation of the Policy Map and United States Census Bureau identified factors associated with poor surgical access in the most populous states (by total rural population). To assess whether these identified factors were associated with reduced access to elective CRC surgery, the 2007 to 2020 National Inpatient Sample was used to evaluate 69,212 hospitalizations of rural patients undergoing CRC surgery. Rural was defined as counties with a population of <250,000. Multivariable logistic regression models assessed predictors of elective CRC surgery. Patient- and hospital-level factor interactions were specified a priori.

Results: More than 72% of hospitalizations of rural patients were elective. Multivariate regression analysis demonstrated that older age, multimorbidity, Black race, Latino-Hispanic ethnicity, Medicaid insurance, and rural hospitals predicted lower odds of elective CRC surgery. On interaction analyses, high-risk patients were less likely to undergo elective CRC surgery in urban facilities relative to rural.

Conclusion: In this large study of rural dwellers, ethnoracial minorities, elders, and Medicaid beneficiaries had profoundly less access to elective CRC surgery, especially when care was received in urban settings. Future studies should focus on exploring actionable social drivers of health in these rural populations. Findings underscore the need for multilevel interventions to enhance rural access to equitable and quality surgical cancer care.