大学生自我报告的身高体重与测量的身高体重的一致性。
Concordance of self-report and measured height and weight of college students.
作者信息
Quick Virginia, Byrd-Bredbenner Carol, Shoff Suzanne, White Adrienne A, Lohse Barbara, Horacek Tanya, Kattelmann Kendra, Phillips Beatrice, Hoerr Sharon L, Greene Geoffrey
机构信息
Department of Health Sciences, James Madison University, Harrisonburg, VA.
Department of Nutritional Sciences, Rutgers University, New Brunswick, NJ.
出版信息
J Nutr Educ Behav. 2015 Jan-Feb;47(1):94-8. doi: 10.1016/j.jneb.2014.08.012. Epub 2014 Oct 12.
OBJECTIVE
This study examined associations between college students' self-report and measured height and weight.
METHODS
Participants (N = 1,686) were 77% white, 62% female, aged 18-24 years (mean ± SD, 19.1 ± 1.1 years), and enrolled at 8 US universities. Body mass index (BMI) was calculated for self-report (via online survey); trained researchers measured height and weight and categorized them as normal (18.5 to < 25), overweight (25 to < 30), obese (30 to < 35), and morbidly obese (≥ 35).
RESULTS
Concordance of self-report vs objectively measured BMI groups using chi-square revealed that 93% were accurate, 4% were underestimated, and 2.7% were overestimated. Pearson correlations and adjusted linear regression revealed significant associations between self-report and measured BMI (r = .97; P < .001) and BMI adjusted for age, gender, and race/ethnicity (R² = .94). Concordance was also high between BMI categories (kappa = 0.77; P < .001).
CONCLUSIONS AND IMPLICATIONS
Findings provide support for the utility of self-report height and weight for survey research in college students.
目的
本研究调查了大学生自我报告的身高体重与测量得到的身高体重之间的关联。
方法
参与者（N = 1686）中77%为白人，62%为女性，年龄在18 - 24岁之间（平均±标准差，19.1 ± 1.1岁），就读于美国8所大学。通过在线调查进行自我报告的体重指数（BMI）计算；经过培训的研究人员测量身高和体重，并将其分类为正常（18.5至<25）、超重（25至<30）、肥胖（30至<35）和病态肥胖（≥35）。
结果
使用卡方检验对自我报告与客观测量的BMI组进行一致性分析，结果显示93%准确，4%被低估，2.7%被高估。Pearson相关性分析和校正线性回归分析显示自我报告与测量得到的BMI之间存在显著关联（r = 0.97；P < 0.001），且年龄、性别和种族/族裔校正后的BMI也存在显著关联（R² = 0.94）。BMI类别之间的一致性也很高（kappa = 0.77；P < 0.001）。
结论与启示
研究结果支持了自我报告的身高体重在大学生调查研究中的实用性。
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