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  • Title: Treatment patterns of lipid-lowering therapies and possible statin intolerance among statin users with clinical atherosclerotic cardiovascular disease (ASCVD) or diabetes mellitus (DM) in Taiwan.
    Author: Chen WJ, Wen YC, Fox KM, Shen LJ, Lin LY, Qian Y, Zhao Z, Rane PP, Hsiao FY.
    Journal: J Eval Clin Pract; 2020 Aug; 26(4):1171-1180. PubMed ID: 31646715.
    Abstract:
    OBJECTIVES: To assess treatment patterns of statin and/or ezetimibe and possible statin intolerance among patients initiating statin or statin plus ezetimibe and with clinical atherosclerotic cardiovascular disease (ASCVD) or diabetes mellitus (DM) in Taiwan. METHODS: A retrospective cohort study using Taiwan's 2005 to 2013 National Health Insurance Research Database (NHIRD) was conducted. Patients with history of clinical ASCVD or DM (without previous clinical ASCVD) and initiating statin or statin plus ezetimibe therapy during 2006 to 2012 were identified. The treatment initiation date was defined as index date. Treatment patterns (including discontinuation, reinitiation, subtraction, switching, and augmentation), adherence (medication possession ratio [MPR]), persistence (gap no greater than 60 d) of statin and/or ezetimibe, and possible statin intolerance during 12-month follow-up from the index date were examined. RESULTS: Among patients initiating statin or statin plus ezetimibe, 11 092 patients with history of clinical ASCVD and 31 100 patients with DM but without clinical ASCVD were analysed. The discontinuation, reinitiation, and switching rates among patients with clinical ASCVD were 54.0%, 11.3%, and 25.7% during 12-month follow-up period, respectively. Among patients with DM, the rates were 57.5%, 14.2%, and 28.5%. The MPRs of statin among clinical ASCVD and DM cohorts were 0.62 and 0.60, respectively. As for ezetimibe, the MPRs were 0.56 and 0.59. Persistence to statin treatment was 46.1% among ASCVD patients and 42.6% among DM patients. Among the ASCVD and DM cohorts, possible statin intolerance was observed among 19.9% and 21.4% of patients, respectively. CONCLUSIONS: Large number of patients with either ASCVD or DM discontinued lipid-lowering therapies with suboptimal adherence and persistence among Taiwanese population. There is a large unmet medical need to provide safe and more effective therapies, which can be used in combination with statins or alone, to reduce the risk of CV events and improve outcomes in high-risk patients.
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