Faculty of Medicine and Biomedical Sciences, School of Public Health, The University of Queensland, Herston Road, Herston, QLD 4006, Australia; Ministry of Health, Riyadh, Saudi Arabia.
Ministry of Health, Riyadh, Saudi Arabia; School of Social Science, The University of Queensland, Australia.
Obes Res Clin Pract. 2017 Sep-Oct;11(5):576-584. doi: 10.1016/j.orcp.2017.01.005. Epub 2017 Feb 16.
To examine adolescents' and mothers' misclassification of the adolescents' body weight and associated early life predictors.
Data are from a sample of women and their children who were part of a longitudinal Australian birth cohort study. We analysed data of 3925 adolescents, 3721 mothers, and 2593 mother-offspring pairs. At the 14-year follow up, we derived adolescents' body weight category (underweight, normal or overweight) based on their measured height and weight and adolescents reported their similar subjective weight categories. Similarly, mothers reported perceived weight of their adolescents' offspring. We compared objectively measured weight with subjective weight perceptions to identify misclassifications. Possible predictors of weight misclassification were taken from pregnancy, childhood and the adolescent period.
Almost a third of adolescents and a quarter of mothers misclassified the adolescents' body weight. Underestimation was observed more often in overweight adolescents. Overestimation was observed more often in underweight adolescents. More than a third of underweight adolescents and almost half of mothers of underweight children overestimated the adolescent's body weight. Normal weight females overestimated their body weight more than their males' counterparts. Predictor of misclassification included being female; dieting to lose weight; having over or underweight mothers; and having high level of poor mental health.
Findings of this study suggest that adolescent weight misclassification is common across all BMI categories. Being female, dieting to lose weight, poor mental health and maternal BMI status predict misclassification. Further studies are needed to evaluate the population health significance of weight misclassifications.
探讨青少年及其母亲对青少年体重的错误分类以及相关的早期生活预测因素。
本研究数据来自澳大利亚纵向出生队列研究的部分女性及其子女样本。我们分析了 3925 名青少年、3721 名母亲和 2593 对母子的数据。在 14 岁的随访中，我们根据青少年的身高和体重得出他们的体重类别（体重不足、正常或超重），并让青少年报告他们类似的主观体重类别。同样，母亲报告了她们认为青少年子女的体重。我们将客观测量的体重与主观体重感知进行比较，以确定错误分类。体重错误分类的可能预测因素来自妊娠、儿童期和青少年期。
近三分之一的青少年和四分之一的母亲错误地判断了青少年的体重。超重青少年中更常见低估，体重不足的青少年中更常见高估。超过三分之一的体重不足的青少年和近一半体重不足的儿童的母亲高估了青少年的体重。正常体重的女性比男性更倾向于高估自己的体重。错误分类的预测因素包括女性；为减肥而节食；母亲超重或体重不足；以及心理健康水平较差。
本研究的结果表明，青少年体重错误分类在所有 BMI 类别中都很常见。女性、为减肥而节食、心理健康状况差和母亲 BMI 状况是错误分类的预测因素。需要进一步研究来评估体重错误分类对人群健康的意义。
