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Long-term use of evidence-based medications is recommended by international guidelines for the management of stable coronary artery disease, however, non-adherence to medications is common. This meta-analysis aims to systematically evaluate the impact of medication adherence on clinical outcomes in patients with stable coronary artery disease.Articles from January 1960–December 2015 were retrieved from the MEDLINE and EMBASE databases without any language restriction. A meta-analysis was performed to investigate the risk ratios of all-cause mortality, cardiovascular mortality, and myocardial infarction/hospitalization between groups with good medication adherence and poor medication adherence. Studies were independently reviewed by two investigators. Data from eligible studies were extracted, and the meta-analysis was performed using R Version 3.1.0 software.A total of 10 studies were included in the analysis, with a total of 106,002 coronary artery disease patients. The results showed that good adherence to evidence-based medication regimens, including β-blockers, angiotensin-converting enzyme inhibitors/angiotensin receptor blockers, antiplatelet drugs, and statins, was related to a lower risk of all-cause mortality(risk ratio 0.56; 95% confidence interval: 0.45–0.69), cardiovascular mortality(risk ratio 0.66; 95% confidence interval: 0.51–0.87), and cardiovascular hospitalization/myocardial infarction(risk ratio 0.61; 95% confidence interval: 0.45–0.82).This meta-analysis confirms the significant impact of good medication adherence on clinical outcomes in patients with stable coronary artery disease. More strategy and planning are needed to improve medication adherence.