期刊
INTERNATIONAL JOURNAL OF CARDIOLOGY
卷 219, 期 -, 页码 136-142出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.ijcard.2016.06.024
关键词
Folate; Mortality; NHANES
资金
- National Health and Medical Research Council of Australia [APP1042343]
- University of Queensland International Scholarship [44078179]
Background: The relationships between serum folate levels and all-cause, cardiovascular disease (CVD), and cancer mortality are controversial. Methods: Utilizing 1999-2010 National Health and Nutrition Examination Survey (NHANES) and linked mortality data, we performed a cohort study with 28,845 participants and used Cox proportional hazards models and restricted cubic spline plots to elucidate the dose-response relationships between serum folate status and all cause, CVD and cancer mortality. Results: During an average follow-up for 6.2 years, 2821, 545 and 628 deaths were attributed to all-causes, CVD and cancer, respectively. Lower folate levels were associated with increased mortality, with hazards ratios of 1.30 (95% confidence interval [CI]: 1.16-1.47) for all-cause mortality, 1.33 (95% CI: 1.01-1.76) for CVD mortality, and 1.47 (95% CI: 1.16-1.87) for cancer mortality (first quartiles versus second quartiles). A reversed J-shaped pattern was apparently observed in males and younger participants when analyzing all-cause mortality and in younger participants when it comes to CVD and cancer mortality. Conclusions: Lower folate levels, but not restricted to folate deficiency, are linked with higher rates of all-cause, CVD and cancer mortality. Adverse effects of excess folate as well as age and gender differences on mortality need further investigation. (C) 2016 Elsevier Ireland Ltd. All rights reserved.
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