School of Human Movement Studies, The University of Queensland, St Lucia.
Aust N Z J Public Health. 2010 Dec;34(6):620-3. doi: 10.1111/j.1753-6405.2010.00618.x. Epub 2010 Oct 7.
To assess the accuracy of body mass index (BMI) estimated from self-reported height and weight from a mailed survey, in a population-based sample of mid-aged Australian women.
One hundred and fifty nine women (age 54-59 years) were recruited from the Australian Longitudinal Study on Women's Health (ALSWH). Participants provided height and weight data in a mailed survey and were then measured (Brisbane, Australia 2005). Differences between self-reported and measured data were examined by plotting against the measured values and using paired t-tests and kappa statistics. Factors associated with biased reporting were assessed using regression models.
Both self-reported height and weight tended to be underestimated, with a mean difference of 0.67 cm (95% CI 0.26 to 1.08 cm) and 0.95 kg (95% CI 0.44 to 1.47 kg) respectively. Reported height and derived BMI was more accurate among married women than single women (average difference of 1.28 cm, 95% CI 0.19 to 2.37 cm and -1.00 kg/m², 95%CI -1.69 to -0.30, respectively). Women with BMI 18.5-24.9 kg/m² reported weight more accurately than obese women (average difference of 2.26 kg, 95% CI 0.14 to 4.38 kg). There was 84% agreement between BMI categories derived from self-reported and measured data, with 85%, 73% and 94% of women correctly classified as obese, overweight, and healthy BMI using self-reported data and kappa=0.81.
There is substantial agreement between self-reported and measured height and weight data for mid-aged women, especially among married and healthy weight women.
Population-based studies among mid-aged women in Australia can use self-reported data obtained from mailed surveys to derive BMI estimates.
评估基于邮寄调查的自我报告身高和体重估计的体质指数（BMI）在澳大利亚中年女性人群中的准确性。
从澳大利亚女性健康纵向研究（ALSWH）中招募了 159 名年龄在 54-59 岁的女性。参与者在邮寄调查中提供身高和体重数据，然后在澳大利亚布里斯班（2005 年）进行测量。通过与测量值作图并使用配对 t 检验和kappa 统计来检查自我报告数据与测量数据之间的差异。使用回归模型评估与偏差报告相关的因素。
自我报告的身高和体重均倾向于被低估，平均差异分别为 0.67 厘米（95%置信区间为 0.26 至 1.08 厘米）和 0.95 千克（95%置信区间为 0.44 至 1.47 千克）。与单身女性相比，已婚女性的报告身高和由此得出的 BMI 更为准确（平均差异分别为 1.28 厘米，95%置信区间为 0.19 至 2.37 厘米和-1.00kg/m²，95%置信区间为-1.69 至-0.30）。BMI 在 18.5-24.9kg/m² 之间的女性报告体重比肥胖女性更准确（平均差异为 2.26 千克，95%置信区间为 0.14 至 4.38 千克）。自我报告和测量数据得出的 BMI 类别之间有 84%的一致性，使用自我报告数据和 kappa=0.81，85%、73%和 94%的女性被正确归类为肥胖、超重和健康 BMI。
在澳大利亚中年女性中，自我报告和测量的身高和体重数据之间存在高度一致性，尤其是在已婚和健康体重女性中。
澳大利亚中年女性的基于人群的研究可以使用邮寄调查获得的自我报告数据来推算 BMI 估计值。
