Dalton William T, Wang Liang, Southerland Jodi L, Schetzina Karen E, Slawson Deborah L
From the Department of Psychology, College of Arts and Sciences, the Department of Biostatistics and Epidemiology and the Department of Community and Behavioral Health, College of Public Health, and the Department of Pediatrics, Quillen College of Medicine, East Tennessee State University, Johnson City.
South Med J. 2014 Jun;107(6):348-55. doi: 10.14423/01.SMJ.0000450708.52011.7c.
The purpose of the study was to examine potential differences between two approaches to defining adolescent weight misperception. Specifically, weight status perception was compared with self-reported weight status and actual weight status (based on body mass index percentiles calculated from self-reported and actual weights and heights, respectively). Furthermore, the accuracy of assigning weight status based on body mass index percentiles calculated from self-reported weights and heights was assessed by comparing them with actual weight status.
Data were extracted from Team Up for Healthy Living, an 8-week, school-based obesity prevention program in southern Appalachia. Participants (N = 1509) were predominately white (93.4%) and ninth graders (89.5%), with approximately equivalent representation of both sexes (50.7% boys).
The study revealed significant differences between the approaches to defining weight misperception (χ(2) = 16.2; P = 0.0003).
Researchers should interpret study findings with awareness of potential differences based on the method of calculating weight misperception.
本研究的目的是检验定义青少年体重认知偏差的两种方法之间的潜在差异。具体而言，将体重状况认知与自我报告的体重状况和实际体重状况进行比较（实际体重状况基于分别根据自我报告的体重和身高以及实际体重和身高计算出的体重指数百分位数）。此外，通过将根据自我报告的体重和身高计算出的体重指数百分位数与实际体重状况进行比较，评估基于这些数据确定体重状况的准确性。
数据取自“携手健康生活”项目，这是阿巴拉契亚南部一项为期8周的以学校为基础的肥胖预防项目。参与者（N = 1509）主要为白人（93.4%）和九年级学生（89.5%），男女比例大致相当（男孩占50.7%）。
该研究揭示了定义体重认知偏差的方法之间存在显著差异（χ(2)=16.2；P = 0.0003）。
研究人员在解释研究结果时应意识到基于计算体重认知偏差方法的潜在差异。
