Metabolic Syndrome, Independent of Its Components, Is a Risk Factor for Stroke and Death But Not for Coronary Heart Disease Among Hypertensive Patients in the ASCOT-BPLA

Abstract

OBJECTIVE To evaluate whether in hypertensive patients the risk of cardiovascular disease is greater in association with the metabolic syndrome (MetS) or the sum of its individual components. RESEARCH DESIGN AND METHODS Cox regression analysis models were developed to assess the influence of age, sex, ethnicity, and the individual components of MetS on risk associated with the MetS (using several definitions) of coronary outcomes, stroke, and all-cause mortality. RESULTS MetS was significantly associated with coronary outcomes, stroke, and all-cause mortality after adjusting for age, sex, and ethnicity. However, when the model was further adjusted for the individual components, MetS was associated with significantly increased risk of stroke (hazard ratio 1.34 [95% CI 1.07–1.68]) and all-cause mortality (1.35 [1.16–1.58]) but not coronary outcomes (fatal coronary heart disease plus nonfatal myocardial infarction 1.16 [0.95–1.43] and total coronary events 1.06 [0.91–1.24]). CONCLUSIONS MetS, independent of its individual components, is associated with increased risk of stroke and all-cause mortality but not coronary outcomes.