Validity of self-reported height, weight, and body mass index of the Korea Youth Risk Behavior Web-based Survey questionnaire.
Validity of self-reported height, weight, and body mass index of the Korea Youth Risk Behavior Web-based Survey questionnaire.
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DOI：
10.3961/jpmph.2010.43.5.396
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发表时间：
2010-09-01
期刊：
影响因子：
--
通讯作者：
Park, Soon Woo
中科院分区：
文献类型：
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作者：
Bae, Jisuk;Joung, Hyojee;Park, Soon Woo
目的：自我报告的人体测量值，如身高和体重，被用来计算身体质量指数（BMI），并评估青少年肥胖的患病率。本研究的目的是评估自我报告的身高，体重和BMI的韩国青少年危险行为网络调查questionnaire.METHODS：方便的样本，137名中学生和242名高中生完成了自填问卷，在2008年的有效性。从问卷调查中获得自我报告值后，直接测量身高和体重。计算敏感性、特异性和Kappa统计量，以评估基于自我报告数据的肥胖患病率（BMI ≥ 95 th百分位数或≥ 25 kg/m2）的有效性。初中女生和高中男生的自报身高有被高估的倾向。肥胖青少年比非肥胖青少年更倾向于低估自己的体重和BMI，高估自己的身高。基于自我报告数据的肥胖患病率估计值（10.6%）低于基于直接测量数据的肥胖患病率估计值（15.3%）。根据自我报告的数据估计肥胖的敏感性为69.0%，特异性为100.0%。Kappa值为0.79（95%可信区间，0.70-0.88）。结论：本研究表明，自我报告的身高和体重可能导致低估BMI，从而导致肥胖的患病率。在使用自我报告的数据监测全国青少年肥胖的患病率和趋势时，应考虑这些偏差。
OBJECTIVES: Self-reported anthropometric values, such as height and weight, are used to calculate body mass index (BMI) and assess the prevalence of obesity among adolescents. The aim of this study was to evaluate the validity of self-reported height, weight, and BMI of the Korea Youth Risk Behavior Web-based Survey questionnaire.METHODS: A convenience sample of 137 middle school students and 242 high school students completed a self-administered questionnaire in 2008. Body height and weight were directly measured after self-reported values were obtained from the questionnaire survey. Sensitivity, specificity, and kappa statistics were computed in order to evaluate the validity of the prevalence of obesity (BMI ≥ 95th percentile or ≥ 25 kg/m(2)) based on self-reported data.RESULTS: Self-reported weight and BMI tended to be underestimated. Self-reported height tended to be overestimated among middle school females and high school males. Obese adolescents tended to underestimate their weight and BMI and overestimate their height more than non-obese adolescents. The prevalence estimate of obesity based on self-reported data (10.6%) was lower than that based on directly measured data (15.3%). The estimated sensitivity of obesity based on self-reported data was 69.0% and the specificity was 100.0%. The value of kappa was 0.79 (95% confidence interval, 0.70-0.88).CONCLUSIONS: This study demonstrated that self-reported height and weight may lead to the underestimation of BMI and consequently the prevalence of obesity. These biases should be taken into account when self-reported data are used for monitoring the prevalence and trends of obesity among adolescents nationwide.