Validation of self-reported anthropometrics in the Adventist Health Study 2.
Validation of self-reported anthropometrics in the Adventist Health Study 2.
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DOI：
10.1186/1471-2458-11-213
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发表时间：
2011-04-05
影响因子：
4.5
通讯作者：
Fraser GE
中科院分区：
文献类型：
--
作者：
Bes-Rastrollo M;Sabaté J;Jaceldo-Siegl K;Fraser GE
依靠自我报告的人体测量数据通常是研究大量人口的唯一可行方法。在这种情况下，没有研究评估人体测量学在大部分素食人群中的有效性。本研究的目的是评估复临健康研究2 （AHS-2）中自我报告的人体测量的有效性。我们选择了911名AHS-2参与者的代表性样本，这是一个在美国和加拿大超过96,000名成年复临信徒的队列。然后，我们将他们测量的体重和身高与基线时自我报告的体重和身高进行比较。我们计算了人体测量学作为连续变量和肥胖定义的分类变量的有效性。平均而言，参与者低估了自己的体重0.20 kg，高估了自己的身高1.57 cm，导致体重指数（BMI）低估了0.61 kg/m2。通过类内相关系数估计，自我报告的BMI和测量的BMI（作为一个连续变量）之间的一致性为0.97。自我报告BMI检测肥胖的敏感性为0.81，特异性为0.97，预测阳性值0.93，预测阴性值0.92，Kappa指数0.81。每一类BMI（正常体重、超重和肥胖）的绝对一致性百分比为83.4%。在多变量分析后，自我报告的BMI和测量的BMI之间的差异的预测因素是肥胖、大豆消费和饮食模式的类型。自我报告的人体测量数据在AHS-2的代表性子样本中显示出很高的有效性，足以用于流行病学研究，尽管它可能导致对肥胖的一些低估。
Relying on self-reported anthropometric data is often the only feasible way of studying large populations. In this context, there are no studies assessing the validity of anthropometrics in a mostly vegetarian population. The objective of this study was to evaluate the validity of self-reported anthropometrics in the Adventist Health Study 2 (AHS-2). We selected a representative sample of 911 participants of AHS-2, a cohort of over 96,000 adult Adventists in the USA and Canada. Then we compared their measured weight and height with those self-reported at baseline. We calculated the validity of the anthropometrics as continuous variables, and as categorical variables for the definition of obesity. On average, participants underestimated their weight by 0.20 kg, and overestimated their height by 1.57 cm resulting in underestimation of body mass index (BMI) by 0.61 kg/m2. The agreement between self-reported and measured BMI (as a continuous variable), as estimated by intraclass correlation coefficient, was 0.97. The sensitivity of self-reported BMI to detect obesity was 0.81, the specificity 0.97, the predictive positive value 0.93, the predictive negative value 0.92, and the Kappa index 0.81. The percentage of absolute agreement for each category of BMI (normoweight, overweight, and obese) was 83.4%. After multivariate analyses, predictors of differences between self-reported and measured BMI were obesity, soy consumption and the type of dietary pattern. Self-reported anthropometric data showed high validity in a representative subsample of the AHS-2 being valid enough to be used in epidemiological studies, although it can lead to some underestimation of obesity.
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影响因子：
6.9
作者：
Nyholm, Maria;Gullberg, Bo;Lindblad, Ulf
通讯作者：
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