Racial and Ethnic Differences in Risk Factors and Outcomes in Adults With Acute Myocardial Infarction.

Introduction Understanding racial/ethnic differences in patients with acute myocardial infarction (AMI) lays the foundation for more equitable health care. This study evaluated racial/ethnic differences in risk factors, treatment, and outcomes in patients with AMI. Methods This retrospective study included patients aged 18-50 years hospitalized for AMI between 2006 and 2016. Cox regression models were used to evaluate the association of race/ethnicity with all-cause mortality. Results Among 1753 patients hospitalized for type 1 AMI (median age 44 years, 85% male), 35.8% self-identified as White, 9.4% non-Hispanic Black, 37.6% Hispanic, 14.5% Asian, and 2.6% as other. Compared to White patients, Black patients were more likely to have hypertension (53.1% vs 32.2%, p < 0.001) and Hispanic patients were more likely to have diabetes (28.2% vs 15.5%, p < 0.001) and obesity (23.9% vs 17.7%, p = 0.008). There were no substantial differences in revascularization rates or initial medical treatment. However, adherence to statin therapy was lower among Black and Hispanic patients (50.3% and 58.6% for Black and Hispanic vs 67.4% and 72.3% for White and Asian patients, respectively). Over a median follow-up of 7.5 years, Black patients had higher all-cause mortality (unadjusted hazard ratio = 1.88, 95% confidence interval = 1.09-3.24) compared to White patients, but this difference was no longer significant after adjustments (adjusted hazard ratio = 1.32, 95% confidence interval = 0.74-2.36). Discussion and Conclusion There are racial/ethnic differences in risk factors and medication adherence patterns in adults with AMI. To achieve equitable care, programs with tailored intervention addressing needs of different groups should be developed.