Validity of self-reported height and weight in 4808 EPIC-Oxford participants
Validity of self-reported height and weight in 4808 EPIC-Oxford participants
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DOI：
10.1079/phn2001322
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发表时间：
2002-08-01
影响因子：
3.2
通讯作者：
Key, TJ
中科院分区：
文献类型：
--
作者：
Spencer, EA;Appleby, PN;Key, TJ
目的：通过对一组中年男性和女性的身高和体重测量结果的比较，来评估他们自我报告身高和体重的有效性，并确定由于自我报告和测量值之间的差异而导致的体重指数的错误分类程度。设计：分析欧洲癌症和营养前瞻性调查(EPIC-牛津)牛津队列参与者的自我报告和测量的身高和体重数据。研究对象：4,808名年龄在35-76岁的英国男性和女性。0.9%，P<；0.0001)。身高被高估的平均值男性为1.23(95%可信区间1.11-1.34)，女性为0.60(0.51-0.70)cm；年龄较大的男性和女性、较矮的男性和较重的女性高估的程度更大。男性的体重被低估了1.85(1.72-1.99)公斤，女性被低估了1.40(1.31-1.49)公斤；体重较重的男性和女性被低估的程度更大，但不随年龄或身高而变化。使用BMI的标准分类，22.4%的男性和18.0%的女性根据自己报告的身高和体重被错误归类。使用从10%样本中得出的预测方程对自我报告的值进行校正后，男性的错误分类减少到15.2%，女性的错误分类减少到13.8%。结论：自我报告的身高和体重数据在流行病学研究中是有效的。在人体测量因素是主要感兴趣变量的分析中，可以使用研究人群中具有代表性的样本的测量来提高对身高、体重和BMI估计的准确性。
Objective: To assess the validity of self-reported height and weight by comparison with measured height and weight in a sample of middle-aged men and women, and to determine the extent of misclassification of body mass index (BMI) arising from differences between self-reported and measured values.Design: Analysis of self-reported and measured height and weight data from participants in the Oxford cohort of the European Prospective Investigation into Cancer and Nutrition (EPIC-Oxford).Subjects: Four thousand eight hundred and eight British men and women aged 35-76 years.Results: Spearman rank correlations between self-reported and measured height, weight and BMI were high (r > 0.9, P < 0.0001). Height was overestimated by a mean of 1.23 (95% confidence interval (CI) 1.11-1.34) cm in men and 0.60 (0.51-0.70) cm in women; the extent of overestimation was greater in older men and women, shorter men and heavier women. Weight was underestimated by a mean of 1.85 (1.72-1.99) kg in men and 1.40 (1.31-1.49) kg in women; the extent of underestimation was greater in heavier men and women, but did not vary with age or height. Using standard categories of BMI, 22.4% of men and 18.0% of women were classified incorrectly based on self-reported height and weight. After correcting the self-reported values using predictive equations derived from a 10% sample of subjects, misclassification decreased to 15.2% in men and 13.8% in women.Conclusions: Self-reported height and weight data are valid for identifying relationships in epidemiological studies. In analyses where anthropometric factors are the primary variables of interest, measurements in a representative sample of the study population can be used to improve the accuracy of estimates of height, weight and BMI.