Journal
JOURNAL OF THE AMERICAN COLLEGE OF CARDIOLOGY
Volume 58, Issue 13, Pages 1378-1385Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jacc.2011.06.024
Keywords
cardiovascular disease; cohort studies; erectile dysfunction; meta-analysis; risk factors
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Objectives Our goal was to evaluate the association between erectile dysfunction (ED) and risk of cardiovascular disease (CVD) and all-cause mortality by conducting a meta-analysis of prospective cohort studies. Background Observational studies suggest an association between ED and the incidence of CVD. However, whether ED is an independent risk factor of CVD remains controversial. Methods The PubMed database was searched through January 2011 to identify studies that met pre-stated inclusion criteria. Reference lists of retrieved articles were also reviewed. Two authors independently extracted information on the designs of the studies, the characteristics of the study participants, exposure and outcome assessments, and control for potential confounding factors. Either a fixed-or a random-effects model was used to calculate the overall combined risk estimates. Results Twelve prospective cohort studies involving 36,744 participants were included in the meta-analysis. The overall combined relative risks for men with ED compared with the reference group were 1.48 (95% confidence interval [CI]: 1.25 to 1.74) for CVD, 1.46 (95% CI: 1.31 to 1.63) for coronary heart disease, 1.35 (95% CI: 1.19 to 1.54) for stroke, and 1.19 (95% CI: 1.05 to 1.34) for all-cause mortality. Sensitivity analysis restricted to studies with control for conventional cardiovascular risk factors yielded similar results. No evidence of publication bias was observed. Conclusions This meta-analysis of prospective cohort studies suggests that ED significantly increases the risk of CVD, coronary heart disease, stroke, and all-cause mortality, and the increase is probably independent of conventional cardiovascular risk factors. (J Am Coll Cardiol 2011; 58: 1378-85) (C) 2011 by the American College of Cardiology Foundation
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