Abstract P116: Racial/Ethnic and Nativity Differences in Cardiovascular Disease Mortality in the United States: Insights From the National Health Interview Survey 1999-2018

Abstract

Background: Racial/ethnic disparities in cardiovascular disease (CVD) deaths continue to persist, despite advances in preventive strategies. Few studies have examined disparities in CVD deaths by nativity status (US- vs. foreign-born). Objective: To assess differences in CVD deaths by nativity status across racial/ethnic groups in the US. Methods: Using a cross-sectional design, we pooled data from 1999-2018 National Health Interview Survey, with linked death records through 2019. Outcome, cardiovascular related deaths (CVD & CVA) was modelled, in years, as time from interview till year of death, or last date of follow-up (December 31, 2019). Nativity status was defined as US- or foreign-born. We used Cox proportional hazards regression to estimate differences in CVD deaths across racial/ethnic groups (White, Black, Asian, Indigenous American, and Hispanic adults) stratifying by nativity status. Models were sequentially adjusted for sociodemographic and CVD risk factors. Results: We included 172,896,665 adults (16% US-born, 84% foreign-born). During median 10 follow-up years, 3.41 CVD deaths /1,000person-years occurred. Among US-born adults, age-and sex-adjusted CVD death rates were 34% higher among Non-Hispanic Black adults (Hazard Ratio: 1.34; 95% CI, 1.29–1.39), 23% higher among Indigenous Americans (HR: 1.23; 95% CI, 1.00–1.52) compared to Non-Hispanic White adults [Table] . In the fully adjusted models, CVD death rates were 6% and 23% lower among Black (HR: 0.94 [95% CI, 0.89–0.99]) and Hispanic (HR: 0.77 [95% CI, 0.70–0.84]) adults. Compared to US-born White adults, CVD death was lower in foreign-born White (HR: 0.74; 95% CI, 0.66–0.82), Black (HR: 0.57; 95% CI, 0.45-0.73), Hispanic (HR: 0.55; 95% CI, 0.50–0.61), and Asian (HR: 0.61; 95% CI, 0.53–0.71) adults, respectively. Conclusions: Overall, CVD deaths were lower among foreign- than US-born adults. Although, there were some racial/ethnic differences in CVD deaths, we found evidence of persistent survival advantage among foreign-born adults.