School of Nursing, University of Pennsylvania, Philadelphia, PA 19104, USA.
Nurs Res. 2013 May-Jun;62(3):195-202. doi: 10.1097/NNR.0b013e318286b790.
Previous studies assessing the validity of adolescent self-reported height and weight for estimating obesity prevalence have not accounted for, potential bias due to nonresponse in self-reports.
The aim of this study was to assess the implications of selective nonresponse in self-reports of height and weight for estimates of adolescent obesity.
The authors analyzed 613 adolescents ages 12-17 years from the 2006-2008 Los Angeles Family and Neighborhood Survey, a longitudinal study of Los Angeles County households with an oversample of poor neighborhoods. Obesity prevalence estimates were compared based on (a) self-report, (b) measured height and weight for those who did report, and (c) measured height and weight for those who did report.
Among younger teens, measured obesity prevalence was higher for those who did not report height and weight compared with those who did (40% vs. 30%). Consequently, obesity prevalence based on self-reported height and weight underestimated measured prevalence by 12 percentage points (when accounting for nonresponse) versus 9 percentage points (when nonresponse was not accounted for). Results were robust to the choice of difference child growth references.
Adolescent obesity surveillance and prevention efforts must take into account selective nonresponse for self-reported height and weight, particularly for younger teens. Results should be replicated in a nationally representative sample.
之前评估青少年自我报告的身高和体重对肥胖流行率的有效性的研究没有考虑到自我报告中由于无应答而产生的潜在偏差。
本研究旨在评估身高和体重自我报告中的选择性无应答对青少年肥胖估计的影响。
作者分析了 2006-2008 年洛杉矶家庭和邻里调查中的 613 名 12-17 岁的青少年，这是一项对洛杉矶县有贫困社区的家庭进行的纵向研究。根据（a）自我报告，（b）报告者的测量身高和体重，以及（c）报告者的测量身高和体重，比较肥胖流行率的估计值。
在较年轻的青少年中，与报告者相比，未报告身高和体重者的肥胖患病率更高（40%比 30%）。因此，基于自我报告的身高和体重估计的肥胖患病率比基于测量的患病率低 12 个百分点（考虑到无应答），比基于测量的患病率低 9 个百分点（不考虑无应答）。结果对于儿童生长参考选择的差异是稳健的。
青少年肥胖监测和预防工作必须考虑到身高和体重自我报告中的选择性无应答，特别是对于较年轻的青少年。结果应在全国代表性样本中进行复制。
