Metabolic syndrome vs. its components for prediction of cardiovascular mortality: A cohort study in Chinese elderly adults |
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Authors: | Sun Dong-Ling Wang Jian-Hua Jiang Bin Li Liang-Shou Li Lan-Sun Wu Lei Wu Hai-Yun He Yao |
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Institution: | Institute of Geriatrics, Chinese PLA General Hospital, 28 Fuxing Road, Beijing 100853, China;Institute of Geriatrics, Chinese PLA General Hospital, 28 Fuxing Road, Beijing 100853, China;Department of Acupuncture, Chinese PLA General Hospital, 28 Fuxing Road, Beijing 100853, China;Department of Epidemiology, the 4th Military Medical University, No.17, Changle West Road, Xi'an 710032, Shaanxi Province, China;Department of Cardiology, the 4th Military Medical University, No.17, Changle West Road, Xi'an 710032, Shaanxi Province, China;Institute of Geriatrics, Chinese PLA General Hospital, 28 Fuxing Road, Beijing 100853, China;Institute of Geriatric Cardiology, Chinese PLA General Hospital, 28 Fuxing Road, Beijing 100853, China;Institute of Geriatrics, Chinese PLA General Hospital, 28 Fuxing Road, Beijing 100853, China |
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Abstract: | ObjectiveThe predictive value of the metabolic syndrome (MetS) for mortality from all-cause and cardiovascular disease (CVD) in the Chinese population is unclear. The aim of this present study was to compare MetS with its individual components as predictors of mortality in Chinese elderly adults.MethodsA cohort of 1,535 subjects (994 men and 541 women) aged 50 years or older was selected from employees of a machinery factory in 1994 and followed until 2009. Cox models were used to estimate the hazard ratios (HRs) predicted by MetS according to the harmonized definition and by its individual components.ResultsThe baseline prevalence of MetS was 28.0% in men and 48.4% in women. During a median follow-up of 15 years, 414 deaths occurred, of these, 153 participants died from CVD. Adjusted for age and gender, the HRs of mortality from all-cause and CVD in participants with MetS were 1.47 (95% confidence interval (CI): 1.20–1.80) and 1.96 (95%CI: 1.42–2.72), respectively, compared with those without MetS. Non-significant higher risk of CVD mortality was seen in those with one or two individual components (HR = 1.22, 95%CI: 0.59–2.50; HR = 1.82, 95%CI: 0.91–3.64, respectively), while a substantially higher risk of CVD mortality only appeared in those with 3, 4, or 5 components (HR = 2.81–3.72), compared with those with no components. On evaluating the MetS components individually, we found that, independent of MetS, only hypertension and impaired glucose predicted higher mortality.ConclusionsThe number of positive MetS components seems no more informative than classifying (dichotomous) MetS for CVD risks assessment in this Chinese cohort. |
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Keywords: | Cardiovascular disease Metabolic syndrome Cohort study Chinese adults |
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