Background
The 2013 American College of Cardiology/American Heart Association guidelines recommend statins for adults ≤75 years who have clinical atherosclerotic cardiovascular disease (ASCVD) (IA) and for adults aged 40 – 75 with diabetes and LDL-C 70-189 mg/dl (IA). Our aim was to estimate the prevalence and likelihood of statin use among selected statin benefit groups.
Methods
Using data from the National Health and Nutrition Examination Survey (NHANES) 2011 – 2012, we examined 5,319 adults ≥20 years. We estimated weighted frequencies and prevalence of statin use for adults with diabetes and dyslipidemia (or LDL ≥70 mg/dl), defined as statin benefit group 1 (SBG1); and for adults with ASCVD, defined as statin benefit group 2 (SBG2). We constructed a logistic regression model to estimate the odds of statin use in SBG1.
Results
Overall, an estimated 38.6 million Americans are on a statin. In adjusted models, uninsured and Hispanic adults were less likely to be on a statin compared to white adults. 59.5% (95% CI: 53.0 – 66.1) of all adults in SBG1, 58.8% (95% CI: 51.5 – 66.1) of adults aged 40 – 75 in SBG1 and 63.5% (95% CI: 55.6 – 71.4) of all adults in SBG2 were on a statin.
Conclusion
Although the prevalence of statin use has increased over time, Hispanic ethnicity and lack of insurance remain a barrier to statin use. Black-white racial disparities were not significant. Our study provides a baseline estimate of statin use in the non-institutionalized population just prior to the introduction of the new guidelines and provides a reference for evaluating the impact of the new guidelines on statin utilization.