Pritchard M E, King S L, Czajka-Narins D M
School of Family, Consumer, and Nutrition Sciences, Northern Illinois University, DeKalb 60115, USA.
Adolescence. 1997 Winter;32(128):863-80.
This study examined the relationship between body mass index (BMI) of adolescents and their perceived-weight status and self-concept, controlling for confounding factors. The data base was drawn from the High School and Beyond (HSB) study, which included 17,318 females and 15,878 males. BMI was calculated using self-reported weights and heights. Response variables included a self-concept index and evaluation of the statement "I am overweight." While respondents' perception of overweight status was accompanied by higher mean BMI values, there were discrepancies in perceived-weight and BMI-weight status. Logistic regression of explanatory variables on perception of overweight status revealed that BMI was the strongest predictor, gender was the second strongest, and the odds of perception of overweight status were higher for females than males by a factor of more than eight. Ordinary least squares regression of explanatory variables on the self-concept index revealed that perception of normal weight status, lower BMI, and male gender were strong predictors of positive self-concept. The findings indicate that substantial numbers of teenage females perceive themselves as overweight when BMI values suggest they are not, while males have a reasonably accurate weight perception.
本研究在控制混杂因素的情况下，考察了青少年体重指数（BMI）与他们所感知的体重状况及自我概念之间的关系。数据库取自“高中及以后”（HSB）研究，该研究包括17318名女性和15878名男性。BMI通过自我报告的体重和身高计算得出。反应变量包括一个自我概念指数以及对“我超重”这一陈述的评价。虽然受访者对超重状况的认知伴随着较高的平均BMI值，但在感知体重和BMI体重状况方面存在差异。对超重状况认知的解释变量进行逻辑回归分析显示，BMI是最强的预测因素，性别是第二强的预测因素，女性对超重状况的认知几率比男性高出八倍多。对自我概念指数的解释变量进行普通最小二乘法回归分析显示，对正常体重状况的认知、较低的BMI以及男性性别是积极自我概念的有力预测因素。研究结果表明，当BMI值表明她们不超重时，大量青少年女性却认为自己超重，而男性对体重的认知较为准确。
