Validity of body mass index compared with other body-corn position screening indexes for the assessment of body fatness in children and adolescents
Validity of body mass index compared with other body-corn position screening indexes for the assessment of body fatness in children and adolescents
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DOI：
10.1093/ajcn/75.6.978
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发表时间：
2002-06-01
影响因子：
7.1
通讯作者：
Dietz, WH
中科院分区：
文献类型：
--
作者：
Mei, ZG;Grummer-Strawn, LM;Dietz, WH
背景：儿童和青少年基于身高和体重的身体脂肪指数的验证研究仅检查了学龄儿童的小样本。目的：目的是验证年龄和性别特定体重指数（BMI）与 Rohrer 指数（RI）和身高别体重在筛查 2-19 岁儿童体重不足和超重方面的表现。设计：数据来自第三次全国健康 和营养检查调查（n = 11096）以及来自使用双能 X 射线吸收测定法的 3 项研究的汇总数据集（n = 920）进行了检查。受试者工作特征曲线用于表征这3个指标对体重不足和超重分类的敏感性和特异性。通过双能X射线吸收测定法测定体脂百分比和总脂肪量。根据三头肌和肩胛下皮褶厚度的平均值来评估皮下脂肪。结果：对于2-19岁儿童，以平均皮褶厚度为标准，年龄别体重指数和年龄别体重指数在检测超重方面显着优于身高别体重和RI，但在检测体重不足方面没有差异。当以体脂百分比或总脂肪量为标准时，年龄别BMI在检测3-19岁儿童超重方面明显优于年龄别RI。年龄别BMI和身高别体重在检测超重或体重不足方面没有差异。结论：对于2-19岁儿童和青少年，年龄别BMI在预测体重不足和超重方面的表现优于年龄别RI，但与身高体重相似。
Background: Validation studies of height- and weight-based indexes of body fatness in children and adolescents have examined only small samples of school-age children.Objective: The objective was to validate the performance of age- and sex-specific body mass index (BMI) compared with the Rohrer index (RI) and weight-for-height in screening for both underweight and overweight in children aged 2-19 y.Design: Data from the third National Health and Nutrition Examination Survey (n = 11096) and a pooled data set from 3 studies that used dual-energy X-ray absorptiometry (n = 920) were examined. The receiver operating characteristic curve was used to characterize the sensitivity and specificity of these 3 indexes in classifying both underweight and overweight. Percentage body fat and total fat mass were determined by dual-energy X-ray absorptiometry. Subcutaneous fat was assessed on the basis of the average of triceps and subscapular skinfold thicknesses.Results: For children aged 2-19 y, BMI-for-age was significantly better than were weight-for-height and RI-for-age in detecting overweight when average skinfold thicknesses were used as the standard, but no differences were found in detecting underweight. When percentage body fat or total fat mass was used as the standard, BMI-for-age was significantly better than was RI-for-age in detecting overweight in children aged 3-19 y. No differences were found between BMI-for-age and weight-for-height in detecting overweight or underweight.Conclusion: For children and adolescents aged 2-19 y, the performance of BMI-for-age is better than that of RI-for-age in predicting under-weight and over-weight but is similar to that of weight-for-height.