Accuracy of teen and parental reports of obesity and body mass index
Accuracy of teen and parental reports of obesity and body mass index
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DOI：
10.1542/peds.106.1.52
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发表时间：
2000-07-01
期刊：
影响因子：
8
通讯作者：
Khandelwal, S
中科院分区：
文献类型：
--
作者：
Goodman, E;Hinden, BR;Khandelwal, S
目标.青少年肥胖正在成为一个日益严重的公共卫生问题。本研究确定：1）青少年和父母报告肥胖的差异，2）使用自我报告的体重指数（BMI）与测量的身高和体重作为肥胖指标的错误分类数量，以及3）错误分类是否因性别和社会经济地位而异。使用了来自全国青少年健康纵向研究的15483名基线（T1）青少年和父母访谈的加权数据。74%的青少年在一年后（T2）再次接受采访。父母报告了他们的社会经济地位指标以及他们的青少年是否肥胖。青少年报告了身高、体重和体重感知。根据T1和T2时自我报告的身高和体重以及T2时测量的身高和体重计算BMI。那些体重指数大于或等于95%的年龄和性别校正被认为是肥胖。在T1，近一半的青少年（47%）报告说他们非常超重，但按BMI计算并不肥胖。对于按BMI计算的肥胖青少年，19.6%的父母和青少年都有肥胖，6.4%的青少年只有肥胖，29.9%的父母只有肥胖，44.2%的青少年和父母都没有肥胖。对于那些持续肥胖的人，青少年和/或父母的报告未能确定超过三分之一（34%）的肥胖; 23.4%的青少年和父母的报告，5.4%的青少年报告，37.2%的父母。在T2时，根据自我报告计算的BMI与总体人群测量的身高和体重之间的相关性非常强（r = 0.92）。与基于测量BMI的肥胖状态相比，基于自我报告BMI的肥胖状态的特异性为0.996;敏感性为0.722;阳性预测值为0.860;阴性预测值为0.978。总体而言，3.8%的青少年被错误分类使用自我报告的措施。根据自我报告的身高和体重，女孩被错误归类为肥胖的可能性并不比男孩高。父母报告比青少年报告的体重状况更能反映青少年的肥胖状况，但父母报告和青少年报告都不能很好地预测青少年肥胖。使用基于自我报告的身高和体重的BMI正确分类96%的肥胖状态。因此，研究可以使用自我报告的身高和体重来了解青少年肥胖及其相关因素/后遗症。
Objectives. Adolescent obesity is becoming an increasing public health problem. This study determines: 1) differences in teen and parental report of obesity, 2) amount of misclassification using body mass index (BMI) from self-reported versus measured height and weight as an indicator of obesity, and 3) whether misclassification varies by gender and socioeconomic status.Design. Weighted data from 15 483 baseline (T1) youth and parental interviews from the National Longitudinal Study of Adolescent Health were used. Seventy-four percent of teens were reinterviewed 1 year later (T2). Parents reported socioeconomic status indicators and whether their teen was obese. Teens reported height, weight, and weight perception. BMI was calculated from both self-reported height and weight at T1 and T2 and from measured height and weight at T2. Those with a BMI greater than or equal to 95% corrected for age and gender were considered obese.Results. At T1, nearly one half of teens (47%) reporting they were very overweight were not obese by BMI. For teens obese by BMI, 19.6% were reported to be obese by both parent and teen, 6.4% by teen only, 29.9% by parent only, and 44.2% by neither teen nor parent. For those with persistent obesity, teen and/or parental report failed to identify more than one third (34%) as obese; 23.4% were identified by both teen and parent report, 5.4% by teen report only, and 37.2% by parent only. At T2, the correlation between BMI calculated from self-reported versus measured height and weight for the overall population was very strong (r = .92). Specificity of obesity status based on self-reported BMI, compared with obesity status based on measured BMI was .996; sensitivity, .722; positive predictive value, .860; and negative predictive value, .978. Overall, 3.8% of teens were misclassified using self-report measures. Girls were no more likely than boys to be misclassified as obese using BMI from self-reported height and weight.Conclusions. Parental report is a better indicator of obesity than teen report of weight status, but parental and teen reports are both poor predictors of adolescent obesity. Using BMI based on self-reported height and weight correctly classified 96% as to obesity status. Thus, studies can use self-reported height and weight to understand teen obesity and its correlates/sequelae.