Abstract
BackgroundThe clinical benefits of a combination of statins and ezetimibe in patients with acute coronary syndrome (ACS) were observed in a clinical trial. However, little is known regarding the effectiveness of using statins with or without ezetimibe in patients with ACS and multiple comorbidities in real-world clinical practice. MethodsThis is a nationwide population-based cohort study using Taiwan National Health Insurance Research Database. A total of 212,110 patients with ACS who had been discharged after their first ACS events between 2006 and 2010 were enrolled. A propensity score matching approach was used to create matched cohorts for adjusting potential confounders. Cox proportional hazards regressions were performed to estimate the risk of re-hospitalization for ACS and revascularization. ResultsPatients in the statins-plus-ezetimibe group had a significantly lower risk of re-hospitalization for ACS (adjusted hazard ratio [HR]=0.64, 95% confidence interval [CI]: 0.60–0.69) and revascularization (HR=0.69, 95% CI: 0.63–0.76) than those in the statins-alone group. In the statins-plus-ezetimibe group, female patients had a lower risk of re-hospitalization for ACS than male patients did, and patients without diabetes mellitus had a lower risk of re-hospitalization for ACS than did patients with diabetes mellitus. ConclusionsPatients with ACS and multiple comorbidities receiving a combination therapy of statins and ezetimibe had a lower risk of re-hospitalization for ACS and revascularization than those receiving statins alone. Significant interaction effects were observed between combination with ezetimibe, sex, and diabetes mellitus.
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