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Racial disparities in advanced stage colorectal cancer survival
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Jan 08 2013
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Source: Cancer Causes Control. 24(3):463-471.
Details:
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Alternative Title:Cancer Causes Control
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Description:Purpose
African Americans (AA) have a higher incidence and lower survival from colorectal cancer (CRC) compared to European Americans (EA). In the present study, statewide, population-based data from South Carolina Central Cancer Registry (SCCCR) is used to investigate the relationship between race and age on advanced stage CRC survival.
Methods
The study population was comprised of 3865 advanced pathologically documented colon and rectal adenocarcinoma cases diagnosed between 01 January 1996 and 31 December 2006: 2673 (69%) EA and 1192 (31%) AA. Kaplan-Meier methods were used to generate median survival time and corresponding 95% confidence intervals (CI) by race, age, and gender. Factors associated with survival were evaluated by fitting Cox proportional hazards (CPH) regression models to generate Hazard Ratios (HR) and 95% CI.
Results
We observed a significant interaction between race and age on CRC survival (p = 0.04). Among younger patients (< 50 years), AA race was associated with a 1.34 (95% CI 1.06-1.71) higher risk of death compared to EA. Among older patients, we observed a modest increase risk of death among AA men compared to EA (HR 1.16 (95% CI 1.01-1.32) but no difference by race among women (HR 0.94 (95% CI 0.82-1.08)). Moreover, we observed that the disparity in survival has worsened over the past 15 years.
Conclusions
Future studies that integrate clinical, molecular, and treatment-related data are needed for advancing understanding of the racial disparity in CRC survival, especially for those < 50 years old.
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Pubmed ID:23296454
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Pubmed Central ID:PMC3574218
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