1989-2011年中国成年居民体质指数分布变化趋势（英文）

Changes of BMI Distribution in Chinese Adults from 1989 to 2011

目的探讨1989-2011年中国成年居民体质指数分布的变化趋势。方法利用"中国居民健康与营养调查"资料,选取1989、1991、1993、1997、2000、2004、2006、2009和2011调查中18-45岁的健康居民为对象。样本量为14831人,共计39497次观测值。应用偏度均值变异系数(LMS)方法描述体质指数分布变化。结果从1989年到2011年,中国成年男性和女性居民体质指数曲线都出现右移。所有百分位数的BMI都呈现出增加趋势,特别是男性在高百分位数的BMI增加更明显。男性和女性的BMI中位数和超重肥胖率也逐年增加,1997年到2011年期间,增加更明显,男性BMI四分位间距从3.4kg/m2增加到4.8kg/m2,女性从3.7kg/m2增加到4.4 kg/m2。与9省区相比,北京、上海、重庆男女性的超重肥胖率更高。结论过去的二十多年中,随着BMI曲线的变化,中国成年居民超重肥胖率显著增加,尤其是男性的增加趋势更为明显。应采取有效措施预防和控制中国成年居民超重肥胖的发生和发展。

Objective To examine the changing trends of body mass index （BMi） distribution in Chinese adults from 1989 to 2011. Methods The data from the China Health and Nutrition Survey （CHNS） collected in 1989, 1991, 1993, 1997, 2000, 2004, 2006, 2009 and 2011 were used. A total of 14831 participants aged 18-45 years with 39497 observations were included in the final analysis. Lambda-mu-sigma （LMS） method was applied to describe the changes of BMI distribution. Results From 1989 to 2011, the distribution curve of BMI showed shifts toward the right in both men and women. All percentile curves displayed an increasing trend and the change was much larger at higher percentile levels mainly among men. The median values of BMI and the prevalence of overweight and obesity exhibited increasing trends in both genders, especially in the period from 1997 to 2011. The quartile range of BMI increased from 3.4kg/m^2 to 4.8kg/m^2 for men and from 3.7kg/m^2 to 4.4 kg/m^2 for women. The prevalence of overweight and obesity appeared to be higher in three megacities than in nine provinces in both men and women. Conclusion As indicated by the changes of the BMI distribution in Chinese adults, the prevalence of overweight and obesity increased greatly during the past 23 years, especially in men. It is urgent to take strategies for obesity prevention and control immediately in China.