Discordance between 10-year cardiovascular risk estimates using the ACC/AHA 2013 estimator and coronary artery calcium in individuals from 5 racial/ethnic groups: Comparing MASALA and MESA

Atherosclerosis. 2018 Dec;279:122-129. doi: 10.1016/j.atherosclerosis.2018.09.015. Epub 2018 Sep 15.

Abstract

Background and aims: South Asian (SA) individuals are thought to represent a group that is at high-risk for atherosclerotic cardiovascular disease (ASCVD). However, the performance of the Pooled Cohort Equations (PCE) remains uncertain in SAs living in the US. We aimed to study the interplay between predicted 10-year ASCVD risk and coronary artery calcium (CAC) in SAs compared to other racial/ethnic groups.

Methods: We studied 536 SAs from the Mediators of Atherosclerosis in South Asians Living in America (MASALA) study, and 2073 Non-Hispanic Whites (NHWs), 1514 African Americans (AAs), 1254 Hispanics, and 671 Chinese Americans (CAs) from the Multi-Ethnic Study of Atherosclerosis (MESA) who were not currently on statins. We used logistic regression models to assess the association between race/ethnicity and CAC within each ASCVD risk stratum.

Results: SAs at low and at intermediate estimated ASCVD risk were more likely to have CAC = 0 compared to NHWs, while SAs at high risk had a similar CAC burden to NHWs. For example, intermediate-risk SAs had a 73% higher odds of CAC = 0 compared to NHWs (95% 1.00-2.99), while high-risk SAs were equally likely to have CAC = 0 (OR 0.95, 95% CI 0.65-1.38) and CAC >100 (OR 0.86, 95% CI 0.61-1.22).

Conclusions: Our results suggest that the extent of ASCVD risk overestimation using the PCEs may be even greater among SAs considered at low and intermediate risk than among NHWs. Studies with incident ASCVD events are required to validate and/or recalibrate current ASCVD risk prediction tools in this group.

Keywords: Atherosclerosis; Cardiovascular disease; Coronary artery calcium; Race/ethnicity; Risk; South Asian.

Publication types

  • Comparative Study
  • Multicenter Study
  • Research Support, N.I.H., Extramural

MeSH terms

  • African Americans
  • Aged
  • Aged, 80 and over
  • Asian Americans
  • Asian Continental Ancestry Group
  • Cardiovascular Diseases / diagnostic imaging
  • Cardiovascular Diseases / ethnology*
  • Continental Population Groups*
  • Coronary Artery Disease / diagnostic imaging
  • Coronary Artery Disease / ethnology*
  • Decision Support Techniques*
  • Emigrants and Immigrants
  • Ethnic Groups*
  • European Continental Ancestry Group
  • Female
  • Hispanic Americans
  • Humans
  • Male
  • Middle Aged
  • Predictive Value of Tests
  • Prevalence
  • Prognosis
  • Prospective Studies
  • Risk Assessment
  • Risk Factors
  • Time Factors
  • United States / epidemiology
  • Vascular Calcification / diagnostic imaging
  • Vascular Calcification / ethnology*