Reliability and validity of self-reported height and weight among high school students
Reliability and validity of self-reported height and weight among high school students
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DOI：
10.1016/s1054-139x(02)00708-5
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发表时间：
2003-04-01
影响因子：
7.6
通讯作者：
Wechsler, H
中科院分区：
文献类型：
--
作者：
Brener, ND;McManus, T;Wechsler, H
目的：在不同的青少年样本中，评估自我报告身高和体重的信度和效度，以及由这些值计算出的变量。方法：一个方便的样本(n=4619)9-12年级的学生在两份相隔大约2周的问卷上报告了他们的身高和体重。结果：自我报告的身高在时间1和时间2高度高度相关，时间1和时间2的平均身高差异很小。在时间1和时间2自我报告的体重和根据这些值计算的身体质量指数(BMI)的结果相似。尽管自我报告的身高、体重和BMI值与他们的测量值高度相关，但平均而言，学生们多报了2.7英寸的身高，少报了3.5磅的体重。基于自我报告的BMI值与测量值相比，结果BMI值平均低2.6 kg/m(2)。因此，基于自我报告而不是测量值，被归类为“超重”或“有超重风险”的学生的百分比较低。白人学生比其他种族/民族的学生更有可能夸大自己的身高，而且随着年级的增长，夸大身高的倾向也在增加。女生比男生更容易低估自己的体重。结论：根据这些值计算的自我报告的身高、体重和BMI具有很高的可靠性，但与由测量值计算的身高、体重和BMI存在差异。因此，基于自我报告的身高和体重数值的BMI低估了青少年人群中超重的流行率。
Purpose: To assess the reliability and validity of self-reported height and weight, and variables calculated from these values, in a diverse sample of adolescents.Methods: A convenience sample of students (n = 4619) in grades 9 through 12 reported their height and weight on two questionnaires administered approximately 2 weeks apart. Using a standard protocol, a subsample of these students (n = 2032) also were weighed and had their height measured following completion of the first questionnaire.Results: Self-reported heights at Time I and Time 2 were highly correlated, and the mean difference between height at Time 1 and Time 2 was small. Results were similar for self-reported weight at Time 1 and Time 2 and body mass index (BMI) calculated from these values. Although self-reported values of height, weight, and BMI were highly correlated with their measured values, on average, students overreported their height by 2.7 inches and underreported their weight by 3.5 pounds. Resulting BMI values were an average of 2.6 kg/m(2) lower when based on self-reported vs. measured values. The percentages of students classified as "overweight" or "at risk for overweight" were therefore lower when based on self-reported rather than on measured values. White students were more likely than those in other race/ethnic groups to overreport their height, and the tendency to overreport height increased by grade. Female students were more likely than male students to underreport their weight.Conclusions: Self-reported height, weight, and BMI calculated from these values were highly reliable but were discrepant from measured height, weight, and BMIs calculated from measured values. BMIs based on self-reported height and weight values therefore underestimate the prevalence of overweight in adolescent populations.