Why the study?
Does black race compared to white race affect long-term survival in diabetic patients after coronary artery bypass grafting?
Does black race compared to white race affect long-term survival in diabetic patients after coronary artery bypass grafting?
This study demonstrates that the survival disadvantage conferred by diabetes after CABG is similar between black and white patients, with no significant racial disparity observed.
Diabetes confers comparable survival risk after CABG in black and white patients; leaves open whether race modifies other post-CABG outcomes.
BACKGROUND: Diabetes is a known predictor of decreased long-term survival after coronary artery bypass grafting (CABG). Differences in survival by race have not been examined. METHODS: A retrospective cohort study was conducted for CABG patients between 1992 and 2011. Long-term survival was compared in patients with and without diabetes and stratified by race. Hazard ratios (HR) and 95% confidence intervals (CI) were computed using a Cox regression model. RESULTS: Out of the 13,053 patients undergoing CABG, 35% (black n = 1,655; white n = 2,884) had diabetes at the time of surgery. The median follow-up for study participants was 8.2 years. Long-term survival after CABG was similar between black and white diabetic patients (no diabetes, HR = 1.0; white diabetic patients, adjusted HR = 1.5, 95%CI = 1.4-1.6; black diabetic patients, adjusted HR = 1.5, 95%CI = 1.4-1.7). CONCLUSION: A survival disadvantage after CABG was not observed among black versus white diabetic patients in our study.
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Efird et al. (2013) studied this question.
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