Coronary heart disease (CHD) is the leading cause of death in the United States.
1 Mortality from CHD has been declining for more than 4 decades, in part because of reduced smoking, control of hyperlipidemia and hypertension, and improved treatment of acute CHD events.
2 Unfortunately, improvements have been less marked for individuals with low socioeconomic status (SES), who bear a disproportionate share of the CHD burden.
2 Coronary heart disease remains the leading cause of mortality in low-income US counties, whereas cancer has the top distinction in high-income counties.
3 Numerous studies have demonstrated an inverse association between SES and CHD mortality.
4-6 Although some of this excess risk is attributable to a higher burden of traditional risk factors among individuals with low SES, risk factor profiles may not fully account for the observed differences, suggesting that low SES itself and other upstream characteristics may be independent risk factors.
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