Background: Over the past decade, ischemic heart disease (IHD) mortality trends have been less favorable among adults age 25-54 than age ≥55 years. Hypothesis: Disorders associated with IHD such as diabetes, chronic inflammatory and infectious diseases, and cocaine use are important contributors to premature IHD mortality. Methods: Multiple-cause-of-death analysis was performed using the New York City (NYC) Vital Statistics database. Frequencies of selected contributing causes on death records with IHD as the underlying cause for decedents age ≥25 were assessed (n = 418,151; 1990-2008). Concurrent Telephone risk-factor surveys (NYC Community Health Survey, Centers for Disease Control Behavioral Risk Factor Survey in New York State) were analyzed. Results: In sum, a prespecified contributing cause was identified on 13.6% of death certificates for IHD decedents age 25-54. Diabetes was reported more frequently for younger IHD decedents (15% of females and 10% of males age 25-54 vs 6% of both sexes age ≥ 55). In contrast, concurrent diabetes prevalence in New York State was 3.4% for those age 25-54 and 13.6% for those age >55 (P < 0.0001). Systemic lupus erythematosus, human immunodeficiency virus, and cocaine were also more likely to contribute to IHD death among younger than older people. Conclusions: Diabetes may be a potent risk factor for IHD death in young people, particularly young women, in whom it was reported on IHD death records at a rate 5× higher than local prevalence. The high frequency of reporting of studied contributing causes in younger IHD decedents may provide a focus for further IHD mortality-reduction efforts in younger adults.
IntroductionIn the United States, about 405,000 deaths in 2008 were attributed to ischemic heart disease (IHD), 1 a 70% decrease from the peak rate in 1968. This trend has not been consistent across groups. From 1999 to 2010, IHD mortality did not significantly change in young women, whereas young men experienced a small decrease and larger declines were observed among older women and men. 1 Over a similar period, the decline in IHD mortality was slower for Americans age < 55 years than older individuals. 2 Although the IHD mortality rate is much lower among younger than