The relationship between directly measured statin adherence, self-reported adherence measures and cholesterol levels in patients with coronary heart disease

Background and aimsWe aimed to determine the relationship between statin adherence measured directly, and by self-report measures and serum cholesterol levels.MethodsPatients prescribed atorvastatin (N = 373) participated in a cross-sectional study 2–36 months after a coronary event. Self-reported adherence included statin adherence the past week, the 8-item Morisky medication adherence scale (MMAS-8), and the Gehi et al. adherence question....