Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, Louisiana, USA.
Obesity (Silver Spring). 2010 Nov;18(11):2237-9. doi: 10.1038/oby.2010.178. Epub 2010 Aug 19.
Although there are issues of reporting bias surrounding the use of self-reported BMI, it is frequently the method employed to establish the prevalence of obesity. The goal of this study was to assess whether, independently of measured BMI, waist circumference (WC) was associated with the magnitude of the difference between self-reported and measured BMI within a large sample of European-American (EA) and African-American (AA) adults. Self-reported height and weight, and measured height, weight, and WC were collected on 12,809 adults (61% women, 66% EA) aged 18-65 years. Mean negative BMI differences (self-reported minus measured BMI) were identified in all race-by-sex groups (AA men: -0.55; EA men: -0.63; AA women: -0.91; EA women: -0.67). WC was negatively associated with the BMI difference such that a higher WC was associated with greater under-reporting of BMI. However, after adjusting for age and measured BMI, WC was positively associated with the BMI difference in all race-by-sex groups. These results suggest that WC could be useful in gaining an insight into people's awareness of their own body size and fatness.
尽管在使用自我报告的 BMI 时存在报告偏倚的问题，但它通常是用于确定肥胖症患病率的方法。本研究的目的是评估腰围（WC）是否独立于测量的 BMI，与欧洲裔美国人（EA）和非裔美国人（AA）成年人中大量样本中自我报告和测量的 BMI 之间的差异程度有关。本研究共纳入了 12809 名年龄在 18-65 岁的成年人（61%为女性，66%为 EA），收集了他们的自我报告身高和体重，以及测量的身高、体重和 WC。在所有种族-性别组中都发现了自我报告 BMI 与测量 BMI 之间的平均负差异（AA 男性：-0.55；EA 男性：-0.63；AA 女性：-0.91；EA 女性：-0.67）。WC 与 BMI 差异呈负相关，即 WC 越高，BMI 的报告越低。然而，在调整年龄和测量的 BMI 后，WC 与所有种族-性别组的 BMI 差异呈正相关。这些结果表明，WC 可以帮助我们深入了解人们对自己身体大小和肥胖程度的认知。
