The impact of socioeconomic status on stage at presentation, receipt of diagnostic imaging, receipt of treatment and overall survival in colorectal cancer patients

Abstract Socioeconomic factors influence patterns of care in colorectal cancer. Our study investigates the impact socioeconomic status (SES) on stage at presentation, receipt diagnostic imaging, treatment and overall survival (OS) a universal healthcare system. The Ontario Cancer Registry (OCR) was accessed to identify cohort patients diagnosed with adenocarcinoma from 2007 2016 Ontario, Canada. SES measured using median neighborhood income divided into quintiles (Q1‐Q5; Q1 = lowest income). Logistic regression analyses were used evaluate stage, imaging treatment. Cox proportional hazards models OS. All endpoints adjusted for demographics comorbidities OS also adjusting In total, 39 802 colon 13 164 rectal identified. Lower associated advanced presentation both cohorts (Q1 vs Q5: Colon odds ratio [OR] 1.08, P .046, OR 1.25, < .0001). less likely receive adjuvant oxaliplatin 0.78, .001) all palliative chemotherapies studied including 0.60, 0.0001), irinotecan 0.65, .0001), bevacizumab 0.70, .001), cetuximab 0.40, .0053) panitumumab 0.54, .0036). patients, lower decreased cancer resection stages I‐III 0.72, .0020) 0.59, 0.53, 0.71, .046). identified poorer (total colorectal; Hazard [HR] These findings suggest disparities persist even within healthcare.