Body Mass Index and Weight Status of Urban School Students by Grade Level.

Abbreviations: BMI (Body Mass Index)a Centers for Disease Control and Prevention categories based on BMI-for-age percentile [14].b Severe obesity is defined as BMI ≥ 120% of 95th percentile of BMI-for-age or BMI ≥ 35.0 kg/m2 [2].Body Mass Index and Weight Status of Urban School Students by Grade Level.缩写说明： BMI（Body Mass Index，身体质量指数） a 基于年龄别BMI百分位数的疾病控制与预防中心（Centers for Disease Control and Prevention）分类标准[14]。 b 重度肥胖定义为：BMI达到年龄别BMI第95百分位数的120%及以上，或BMI≥35.0 kg/m²[2]。 按年级划分的城市在校学生身体质量指数与体重状况。