Central fatness and risk of all cause mortality: systematic review and dose-response meta-analysis of 72 prospective cohort studies

腰围 医学 危险系数 置信区间 前瞻性队列研究 周长 荟萃分析 队列研究 人口 体质指数 腰臀比 内科学 环境卫生 数学 几何学
作者
Ahmad Jayedi,Sepideh Soltani,Mahdieh Sadat Zargar,Tauseef Khan,Sakineh Shab‐Bidar
标识
DOI:10.1136/bmj.m3324
摘要

Abstract Objective To quantify the association of indices of central obesity, including waist circumference, hip circumference, thigh circumference, waist-to-hip ratio, waist-to-height ratio, waist-to-thigh ratio, body adiposity index, and A body shape index, with the risk of all cause mortality in the general population, and to clarify the shape of the dose-response relations. Design Systematic review and meta-analysis. Data sources PubMed and Scopus from inception to July 2019, and the reference lists of all related articles and reviews. Eligibility criteria for selecting studies Prospective cohort studies reporting the risk estimates of all cause mortality across at least three categories of indices of central fatness. Studies that reported continuous estimation of the associations were also included. Data synthesis A random effects dose-response meta-analysis was conducted to assess linear trend estimations. A one stage linear mixed effects meta-analysis was used for estimating dose-response curves. Results Of 98 745 studies screened, 1950 full texts were fully reviewed for eligibility. The final analyses consisted of 72 prospective cohort studies with 2 528 297 participants. The summary hazard ratios were as follows: waist circumference (10 cm, 3.94 inch increase): 1.11 (95% confidence interval 1.08 to 1.13, I 2 =88%, n=50); hip circumference (10 cm, 3.94 inch increase): 0.90 (0.81 to 0.99, I 2 =95%, n=9); thigh circumference (5 cm, 1.97 inch increase): 0.82 (0.75 to 0.89, I 2 =54%, n=3); waist-to-hip ratio (0.1 unit increase): 1.20 (1.15 to 1.25, I 2 =90%, n=31); waist-to-height ratio (0.1 unit increase): 1.24 (1.12 to 1.36, I 2 =94%, n=11); waist-to-thigh ratio (0.1 unit increase): 1.21 (1.03 to 1.39, I 2 =97%, n=2); body adiposity index (10% increase): 1.17 (1.00 to 1.33, I 2 =75%, n=4); and A body shape index (0.005 unit increase): 1.15 (1.10 to 1.20, I 2 =87%, n=9). Positive associations persisted after accounting for body mass index. A nearly J shaped association was found between waist circumference and waist-to-height ratio and the risk of all cause mortality in men and women. A positive monotonic association was observed for waist-to-hip ratio and A body shape index. The association was U shaped for body adiposity index. Conclusions Indices of central fatness including waist circumference, waist-to-hip ratio, waist-to-height ratio, waist-to-thigh ratio, body adiposity index, and A body shape index, independent of overall adiposity, were positively and significantly associated with a higher all cause mortality risk. Larger hip circumference and thigh circumference were associated with a lower risk. The results suggest that measures of central adiposity could be used with body mass index as a supplementary approach to determine the risk of premature death.
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