Accuracy of the estimated prevalence of obesity from self reported height and weight in an adult Scottish population
Accuracy of the estimated prevalence of obesity from self reported height and weight in an adult Scottish population
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DOI：
10.1136/jech.54.2.143
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发表时间：
2000-02-01
影响因子：
6.3
通讯作者：
Morrison, C
中科院分区：
文献类型：
--
作者：
Bolton-Smith, C;Woodward, M;Morrison, C
研究目的-确定苏格兰成年人自我报告的身高和体重是否能够准确地评估人群中的肥胖率。在第四次苏格兰莫尼卡横断面研究中，将设计标准化的临床体重和身高测量结果与邮政问卷上的自我报告值进行了比较。设置-1995年从格拉斯哥北部全科医生登记中抽取的性别和五岁年龄段分层随机人口样本。受试者-共有865名男性和971名女性，年龄在25岁到63岁之间。结果-男性和女性分别平均少报了0.63(3.45)kg和0.95(2.64)kg的体重，平均少报了1.3(2.50)cm和1.7(2.37)cm的身高。估计体重指数，BMI(公斤/米(2))与真实(测量)的EMI相差男性+0.19(1.40)，女性+0.17(1.34)。从自我报告中低估EMI的唯一年龄/性别群体(平均值0.2)是55岁的女性。预测方程解释了90%(男性)和88%(女性)的自我报告身高和测量身高之间的差异，其中包括年龄和自我报告体重。对体重的等效预测方程解释了93%的男性自我报告体重和测量体重之间的差异，并包括吸烟和糖尿病状况，而对于女性，96%的差异可以解释，没有其他显著变量。临床肥胖(BMI大于或等于30)的敏感性和特异性男性分别为83%和96%，女性分别为89%和97%。结论-苏格兰人群在低估身高和体重方面是独一无二的，这导致了BMI估计的低误差。这些数据表明，自我报告的体重和身高将令人满意地监测苏格兰的肥胖率。
Study objective-To determine whether self reported heights and weights from Scottish adults can provide an accurate assessment of obesity prevalence in the population.Design-Standardised clinic measurements of weight and height were compared against self reported values on a postal questionnaire in the fourth Scottish MONICA cross sectional study.Setting-A sex and five year age band stratified random population sample drawn from general practitioner registers in north Glasgow in 1995. Response rate 63% for men and 62% for women.Participants-A total of 865 men and 971 women aged between 25 and 63 years.Results-Men and women under-reported their weight by a mean (SD) of 0.63 (3.45) kg and 0.95 (2.64) kg respectively, and their height by a mean (SD) of 1.3 (2.50) cm and 1.7 (2.37) cm respectively. Estimated body mass index, BMI (kg/m(2)) varied from true (measured) EMI by +0.19 (1.40) for men and by +0.17 (1.34) for women. The only age/sex group in which EMI was under-estimated from self reports (mean 0.2) was the 55-64 year old women. Prediction equations that explained 90% (men) and 88% (women) of the difference between self reported and measured height included age and self reported weight. The equivalent prediction equations for weight explained 93% of the difference between self reported and measured weight for men and included smoking and diabetic status, while for women 96% of the variance was explained with no further variables being significant. Sensitivity and specificity for determining clinical obesity (BMI greater than or equal to 30) were 83% and 96% respectively for men, and 89% and 97% for women.Conclusions-This Scottish population was unique in the under-reporting of height as well as weight, which resulted in BMI estimates with low error. These data suggest that self reported weights and heights would be satisfactory for the monitoring of obesity prevalence in Scotland.