US Mortality Due To Congenital Heart Disease Across the Lifespan from 1999-2017 Exposes Persistent Racial/Ethnic Disparities

ABSTRACT Background Congenital heart disease (CHD) accounts for approximately 40% percent of deaths in United States (US) children with birth defects. Previous US data from 1999-2006 demonstrated an overall decrease in CHD mortality. The objective of our study was to assess current trends in US mortality related to CHD from infancy to adulthood over the last 19 years and determine differences by sex and race/ethnicity. Methods We conducted an analysis of death certificates from 1999-2017 to calculate annual CHD mortality by age at death, race/ethnicity, and sex. Population estimates used as denominators in mortality rate calculation for infants were based on National Center for Health Statistics live birth data. Mortality rates in individuals > 1 year of age utilized US Census Bureau bridged-race estimates as denominators for population estimates. We characterized temporal trends in all-cause mortality, mortality resulting directly due to and related to CHD by age, race/ethnicity, and sex using joinpoint regression. Results There were 47.7 million deaths with 1 in 814 deaths due to CHD (n=58,599). While all-cause mortality decreased 16.4% across all ages, mortality resulting from CHD declined 39.4% overall. The mean annual decrease in CHD mortality was 2.6%, with the largest decrease for those age >65years. The age-adjusted mortality rate decreased from 1.37 to 0.83 per 100,000. Males had higher mortality due to CHD than females throughout the study, although both sexes declined at a similar rate (∼40% overall), with a 3-4% annual decrease between 1999 and 2009, followed by a slower annual decrease of 1.4% through 2017. Mortality resulting from CHD significantly declined among all race/ethnicities studied, although disparities in mortality persisted for non-Hispanic Blacks versus non-Hispanic Whites (mean annual decrease 2.3% versus 2.6%, respectively; age-adjusted mortality rate 1.67 to 1.05 versus 1.35 to 0.80 per 100,000, respectively). Conclusions While overall US mortality due to CHD has decreased over the last 19 years, disparities in mortality persist for males compared to females and for non-Hispanic Blacks compared to non-Hispanic Whites. Determining factors that contribute to these disparities such as access to quality care, timely diagnosis, and maintenance of insurance will be important moving into the next decade.