Validity of self-reported weight and height for BMI classification: A cross-sectional study among young adults
Validity of self-reported weight and height for BMI classification: A cross-sectional study among young adults
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DOI：
10.1016/j.nut.2019.110622
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发表时间：
2020-03-01
期刊：
影响因子：
4.4
通讯作者：
Allman-Farinelli, Margaret
中科院分区：
文献类型：
--
作者：
Davies, Alyse;Wellard-Cole, Lyndal;Allman-Farinelli, Margaret
目的：本研究的目的是验证年轻人自我报告的人体测量和身体质量指数（BMI）分类。方法：收集100例18 ~ 30岁青年自我报告和直接测量的体重和身高。参与者在两个大学诊所中的一个由两名研究营养师进行测量，并在两周内通过问卷自报体重和身高，这是一项更大规模研究的一部分。BMI是根据世界卫生组织对体重不足、健康体重、超重或肥胖的分界点进行计算和分类的。采用Pearson’s correlation、Bland-Altman图和Cohen’s kappa统计来检验测量值与自我报告的体重和身高的有效性。结果：测量的体重与自述的体重（r = 0.99, P < 0.001）、身高（r = 0.95, P < 0.001）、BMI （r = 0.94, P < 0.001）有很强的相关性。Bland-Altman图表明，在总样本中，自我报告的BMI和直接测量的BMI之间的平均差异很小（0.1 kg/m(2)）。大多数值落在一致性的限度内（2 SD），随机散点图，未检测到系统偏倚。自我报告和直接测量的BMI分类表明，88%的人属于等效体重类别，Cohen's kappa（0.76； 95%可信区间，0.63-0.89;P < 0.001）非常吻合。结论：在自我报告和直接人体测量测量之间发现了良好的一致性。对自我报告的人体测量的批评是没有根据的。当直接测量不可行时，研究结果为在澳大利亚年轻人中使用自我报告的身高和体重数据提供了支持。(C) 2019 Elsevier Inc.版权所有。
Objective: The aim of this study was to validate self-reported anthropometric measurements and body mass index (BMI) classifications in a young adult population.Methods: Both self-reported and directly measured weight and height of 100 young adults 18 to 30 y of age were collected. Participants were measured at one of two university clinics by two research dietitians and within 2 wk self-reported their body weight and height via a questionnaire as part of a larger study. BMI was calculated and categorized according to the World Health Organization's cut-points for underweight, healthy weight, and overweight or obesity. The validity of measured against self-reported weight and height was examined using Pearson's correlation, Bland-Altman plots, and Cohen's kappa statistic.Results: Strong correlation was observed between measured and self-reported weight (r = 0.99; P < 0.001), height (r = 0.95; P < 0.001), and BMI (r = 0.94; P < 0.001). Bland-Altman plots indicated that the mean difference between self-reported and direct BMI measurements were small in the total sample (0.1 kg/m(2)). The majority of values fell within the limits of agreement (2 SD), with random scatter plots and no systemic bias detected. The classification of BMI from self-reported and direct measurements showed that 88% were placed in the equivalent weight category with very good agreement Cohen's kappa (0.76; 95% confidence interval, 0.63-0.89; P < 0.001).Conclusions: Good agreement was detected between self-reported and direct anthropometric measurements. The criticism of self-reported anthropometric measurements is unwarranted. The findings provide support for using self-reported height and weight data for research in Australian young adults when direct measurements are not feasible. (C) 2019 Elsevier Inc. All rights reserved.