UNDERESTIMATION OF RELATIVE WEIGHT BY USE OF SELF-REPORTED HEIGHT AND WEIGHT
UNDERESTIMATION OF RELATIVE WEIGHT BY USE OF SELF-REPORTED HEIGHT AND WEIGHT
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DOI：
10.1093/oxfordjournals.aje.a114494
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发表时间：
1987-01-01
影响因子：
5
通讯作者：
BEAGLEHOLE, R
中科院分区：
文献类型：
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作者：
STEWART, AW;JACKSON, RT;BEAGLEHOLE, R
自我报告和测量的身高和体重是从 1982 年新西兰奥克兰的 1,598 名代表性样本中获得的。对自我报告数据的准确性及其对通过 Quetelet 指数测量的相对体重错误分类的影响进行了检查。研究发现，对于大多数参与者 (75%) 来说，自我报告的测量结果与测量的身高相差不超过 3.5 厘米，与测量的体重相差不超过 2.4 公斤，这表明自我报告的准确性很高。然而，参与者始终高估自己的身高并低估自己的体重，从而导致相对体重的低估。这对于使用自我报告的相对权重测量作为连续协变量的分析影响不大，但在使用相对权重作为分类变量时会发生错误分类。本研究中与分类自我报告相对体重相关的敏感性和特异性可用于调整优势比和相对风险，这些优势比和相对风险是根据自我报告身高和体重得出的相对体重计算得出的。
Self-reported and measured height and weight were obtained from a representative sample of 1,598 persons in Auckland, New Zealand during 1982. The accuracy of the self-reported data and its effect on the misclassification of relative weight, as measured by Quetelet index, were examined. The finding that for most participants (75%), self-reported measures were no more than 3.5 cm from their measured height and 2.4 kg from their measured weight indicates that self-reports have a high degree of accuracy. However, the participants consistently overestimated their height and underestimated their weight, resulting in an underestimation of relative weight. This would have little effect on analyses using the self-reported relative weight measures as a continuous covariate, but misclassification would occur when using relative weight as a categorical variable. The sensitivities and specificities associated with categorized self-reported relative weight in this study could be used to make adjustments to odds ratios and relative risks that have been calculated from relative weight derived from self-reported height and weight.