Association between body mass index and body fat measured by dual-energy X-ray absorptiometry (DXA) in China: a systematic review and meta-analysis  

作　　者：Xiaomin Sun Na Yan Wen Peng Tuan T Nguyen Lu Ma Youfa Wang 

机构地区：[1]International Obesity and Metabolic Disease Research Center,Global Health Institute,School of Public Health,Xi'an Jiaotong University,Xi'an,Shaanxi 710061,China [2]Nutrition and Health Promotion Center,Department of Public Health,Medical College,Qinghai University,Xining,Qinghai 810061,China [3]Alive&Thrive East Asia Pacific,FHI 360,Hanoi 11022,Vietnam

出　　处：《Global Health Journal》2023年第2期61-69,共9页全球健康杂志（英文）

基　　金：funded in part by the United Nations Children's Fund(UNICEF)(grant number:UNICEF 2018-Nutrition-2.1.2.3);the Chinese Nutrition Society-National Nutrition Science Research Grant(grant number:CNS-NNSRG2019-97).

摘　　要：Objective:We examined the association between body mass index(BMI)and body fat percentage(BF%)measured by dual-energy X-ray absorptiometry(DXA)among adults and children in China.Methods:We searched four databases-PubMed,China National Knowledge Infrastructure,Wanfang,and Vip for studies published in the past 22 years.Meta-analysis was conducted using random-or fixed-effect models.Results:In total of 21 studies met inclusion criteria and were included in review,and 17 ot them in meta-analysis.They were conducted across China.Their sample size ranged from 62 to 5726,and participants'age ranged from 6-80 years.Meta-analysis revealed strong associations between BMI and BF% measured by DXA in adults(pooled r=0.71,95% CI:0.66 to 0.74)and children(pooled r=0.60,95% CI:0.52 to 0.68).The association was stronger in Northern China than in East China in children(β=-0.40,95%CI:-0.65 to-0.14)and in Central China in adults(β=-0.25;95% CI:-0.51 to-0.01).Urban children's BMI was strongly associated with BF%than rural(β=0.19;95%CI:0.04 to 0.35),whereas it was stronger in adults living in rural than in urban(β=-0.35;95% CI:-0.66 to-0.05).Conclusions:BMI was strongly associated with BF%measured by DXA,and the association in children and adults in China varied by residence and region.

关 键 词：Body mass index Dual-energy x-ray absorptiometry Body adiposity Children ADULTS China 

分 类 号：R589.2[医药卫生—内分泌]