Accuracy of Body Mass Index Categories Based on Self-Reported Height and Weight Among Women in the United States
Accuracy of Body Mass Index Categories Based on Self-Reported Height and Weight Among Women in the United States
复制标题
DOI：
10.1007/s10995-008-0384-7
复制
发表时间：
2009-07-01
影响因子：
2.3
通讯作者：
Adams, Alexandra K.
中科院分区：
文献类型：
--
作者：
Craig, Benjamin M.;Adams, Alexandra K.
目的 本研究的目的是评估基于成年女性自我报告的身高和体重的 BMI 类别的准确性。方法 将自我报告的 BMI 类别与参加 1999-2004 年全国健康和检查调查的 18 岁或以上女性体检时测量的类别进行比较。我们首先使用 Cohen 的 kappa 检验一致性强度，与敏感性和特异性不同，它允许对超出机会一致性的多分类测量进行比较。 Kappa 回归可识别对准确性的潜在威胁。使用逻辑回归检查通过漏报来衡量的偏倚可能性。结果 Cohen 的 kappa 估计值对于孕妇 (N = 724) 为 0.443，对于非孕妇 (N = 5,910) 为 0.705。 Kappa 因年龄和种族而异，但在很大程度上与社会经济地位、健康和健康行为无关。去年看过医生或被诊断患有骨质疏松症的女性更准确，而最有可能漏报的女性是年龄较大、白人、非西班牙裔和受过大学教育的女性。结论 我们的结果表明，除了怀孕、75 岁以上或没有就诊的女性外，自我报告和测量类别之间基本一致。在受过良好教育的白人群体中，漏报现象可能比少数族裔群体更为普遍。
Objective The purpose of this study was to assess the accuracy of BMI categories based on self-reported height and weight in adult women. Methods BMI categories from self-reported responses were compared to categories measured during physical examination from women, age 18 or older, who participated in the National Health and Examination Survey, 1999-2004. We first examined strength of agreement using Cohen's kappa, which, unlike sensitivity and specificity, allows for the comparison of polychotomous measures beyond chance agreement. Kappa regression identifies potential threats to accuracy. Likelihood of bias, as measured by under-reporting, was examined using logistic regression. Results Cohen's kappa estimates were 0.443 for pregnant women (N = 724) and 0.705 for non-pregnant women (N = 5,910). Kappa varied by age and race, but was largely unrelated to socioeconomic status, health and health behaviors. Women who visited a physician in the last year or been diagnosed with osteoporosis were more accurate, while women most likely to under-report were older, white, non-Hispanic, and college-educated. Conclusions Our results suggest substantial agreement between self-reported and measured categories, except for women who are pregnant, above the age of 75 or without physician visits. Under-reporting may be more prevalent in well-educated, white populations than minority populations.