有关中学生身体质量指数的调查

The Survey on Body Mass Index

目的：研究中学生饮食习惯及肥胖的变化。方法：测量身高，体重，而后计算身体质量指数（ＢＭＩ）。结果：ＢＭＩ在民族、城乡，性别间未发现有意义的差别。城市组内ＢＭＩ高中生比初中生增高显著，高中女生比初中女生增高显著，过低体重，肥胖的比例在民族，城乡和性别间无差异，前者在初中生中所占比例较高中生为高。结论：青少年的体重变化与民族、城乡，性别间未发现存在一定的关系，但在初高中生之间则显示出差异。

Objective:To study the changes in diet habits and obesity degree of middle school students.Method:To measure body heights and body weiahts of thestudents and then to calculate Body mass Index(BMI) Results:There were no significant differences of BMI among race,urban-suburban,and sex:in urfnmgroup,BMI of high school students was significantly higher than that of the secondary school students; there were no differences of the ratios of severe underweigntand obestiy among race,urban-suburban,and sex;the former in secondary school students was higher than that in high school students and the latter in highschool students was much higher.Conclusions:No relationahip of the changes in body weight of juveniles were found among different races,urban-suburban andsexes but differences were shown between secondary and high school students.