Racial and Ethnic Disparities in Health of Adults in the United States: A 20-Year National Health Interview Survey Analysis, 1999–2018

IMPORTANCE: Thirty-five years ago, the Heckler Report described health disparities among minority populations in the US. Since then, policies have been implemented to address these disparities. However, a recent evaluation of progress towards improving the health and health equity among US adults is lacking. OBJECTIVES: To evaluate racial/ethnic disparities in the physical and mental health of US adults over the last 2 decades. DESIGN: Cross-sectional. SETTING: National Health Interview Survey data, years 1999–2018. PARTICIPANTS: Adults aged 18–85 years. EXPOSURE: Race/ethnicity subgroups (non-Hispanic White, non-Hispanic Black, non-Hispanic Asian, Hispanic). MAIN OUTCOME AND MEASURES: Proportion of adults reporting poor/fair health status, severe psychological distress, functional limitation, and insufficient sleep. We also estimated the gap between non-Hispanic White and the other subgroups for these four outcomes. RESULTS: We included 596,355 adults (mean age 46 years, 51.8% women), of which 69.7%, 13.8%, 11.8% and 4.7% identified as non-Hispanic White, Hispanic, non-Hispanic Black, and non-Hispanic Asian, respectively. Between 1999 and 2018, Black individuals fared worse on most measures of health, with 18.7% (95% CI 17.1–20.4) and 41.1% (95% CI 38.7–43.5) reporting poor/fair health and insufficient sleep in 2018 compared with 11.1% (95% CI 10.5–11.7) and 31.2% (95% CI 30.3–32.1) among White individuals. Notably, between 1999–2018, there was no significant decrease in the gap in poor/fair health status between White individuals and Black (−0.07% per year, 95% CI −0.16–0.01) and Hispanic (−0.03% per year, 95% CI −0.07–0.02) individuals, and an increase in the gap in sleep between White individuals and Black (+0.2% per year, 95% CI 0.1–0.4) and Hispanic (+0.3% per year, 95% CI 0.1–0.4) individuals. Additionally, there was no significant decrease in adults reporting poor/fair health status and an increase in adults reporting severe psychological distress, functional limitation, and insufficient sleep. CONCLUSIONS AND RELEVANCE: The marked racial/ethnic disparities in health of US adults have not improved over the last 20 years. Moreover, the self-perceived health of US adults worsened during this time. These findings highlight the need to re-examine the initiatives seeking to promote health equity and improve health.