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目的探讨体质指数(BMI)在深圳成年人的分布特征和体重自我评价情况。方法2008年3月采用随机整群抽样方法随机抽取某些时间段在深圳市某连锁餐饮单位所有的成年消费人群作为调查对象,通过自制问卷实施调查。结果共收集有效问卷703份。样本人群BMI的均值为(21.34±2.94)kg/m2,消瘦、超重和肥胖率分别为15.1%、15.6%和2.6%;女性的消瘦比例显著高于男性,男性的超重比例显著高于女性;18~岁年龄组超重和肥胖率最低,随着年龄的增长,超重和肥胖率都呈上升趋势。样本人群对自身体重评价与BMI值的一致率为66.3%,男性和女性对自身体重评价与BMI值的一致率分别为65.5%和67.3%,两者之间差异无统计学意义。结论BMI与性别和年龄有密切关系,正确地认识自身体重状况的健康教育及预防控制超重和肥胖的工作任重道远。
Objective To explore the distribution characteristics and self-evaluation of body mass index (BMI) in Shenzhen adults. Methods In March 2008, a random cluster sampling method was used to randomly select all the adult consumer groups in a chain catering unit in Shenzhen for some time periods to conduct the survey through self-made questionnaires. Results A total of 703 valid questionnaires were collected. The mean body mass index (BMI) of the sample population was (21.34 ± 2.94) kg / m2, and the weight loss, overweight and obesity rates were 15.1%, 15.6% and 2.6% respectively. The wasting ratio of the women was significantly higher than that of the male, The overweight and obesity rates of the 18 ~ age group were the lowest, and the overweight and obesity rates showed an upward trend with age. The concordance rate of sample weight to BMI was 66.3%. The agreement rate between male and female body weight and BMI was 65.5% and 67.3% respectively. There was no significant difference between the two groups. Conclusions BMI is closely related to gender and age. It is still a long way to go before health education can correctly understand the condition of body weight and prevent and control overweight and obesity.