Li Yan, Zhao Dong, Wang Wei, Liu Jing, Sun Jia-yi, Wu Zhao-su
Department of Epidemiology, Beijing Heart, Lung and Blood Vessel Diseases Institute, Beijing 100029, China.
Zhonghua Yu Fang Yi Xue Za Zhi. 2005 Jan;39(1):11-4.
To compare changes in body mass index (BMI), prevalence of over weight and obesity of the population in a community cohort of Peking University during 1992 to 2002, and to study their characteristics of individual BMI.
Totally, 1 985 individuals aged 35-64 years were selected from Peking University community with stratified random sampling method for baseline survey by physical examinations and questionnaire interviews to collect relevant data in 1992. And, a follow-up survey was conducted for each individual of the cohort in 2002. Data were analyzed for 1 437 individuals with complete records of the two surveys.
(1) In the period from 1992 to 2002, weight increased averagely 4.89 kg in men and 3.08 kg in women, respectively, and BMI increased to 25.22 kg/m2 in 2002 from 23.49 kg/m2 ten years ago in men and to 25.02 kg/m2 from 23.30 kg/m2 in women. (2) Prevalence of overweight increased by 47.8% in men and 29.5% in women, and prevalence of obesity increased by 124.2% in men and 131.3% in women, respectively. (3) 74.9% of men with overweight ten years ago remained overweight and 22.9% of them became obese in 2002. 85.7% of men with obesity ten years ago remained obese in 2002. 58.2% of women with overweight ten years ago remained overweight and 34.5% of them became obese in 2002. 93.7% of women with obesity ten years ago remained obese in 2002.
Mean BMI and prevalence of overweight and obesity of population in Peking University community increased during 1992 to 2002. Most of those with overweight or obesity ten years ago remained overweight or obese and few of them became normally weighed ten years later. Those with overweight BMI were more liable to become obese than those with normal BMI. All these results indicated once overweight or obesity established, it was difficult to be reversed. Therefore, the key to control overweight and obesity rests on its earlier prevention.
比较1992年至2002年北京大学社区队列人群体重指数（BMI）、超重及肥胖患病率的变化，并研究个体BMI的特征。
1992年采用分层随机抽样方法从北京大学社区选取1985名35 - 64岁个体进行基线调查，通过体格检查和问卷调查收集相关数据。2002年对该队列的每个个体进行随访调查。对两次调查记录完整的1437名个体的数据进行分析。
（1）1992年至2002年期间，男性体重平均增加4.89kg，女性平均增加3.08kg；男性BMI从十年前的23.49kg/m²增至2002年的25.22kg/m²，女性从23.30kg/m²增至25.02kg/m²。（2）男性超重患病率增加了47.8%，女性增加了29.5%；男性肥胖患病率分别增加了124.2%，女性增加了131.3%。（3）十年前超重的男性中，74.9%在2002年仍超重，22.9%变为肥胖。十年前肥胖的男性中，85.7%在2002年仍肥胖。十年前超重的女性中，58.2%在2002年仍超重，34.5%变为肥胖。十年前肥胖的女性中，93.7%在2002年仍肥胖。
1992年至2002年北京大学社区人群平均BMI、超重及肥胖患病率上升。十年前超重或肥胖者多数仍保持超重或肥胖状态，十年后很少有人体重恢复正常。超重BMI者比正常BMI者更易肥胖。所有这些结果表明，一旦超重或肥胖形成，很难逆转。因此，控制超重和肥胖的关键在于早期预防。
