安庆市大学生体型自我评价和不良减肥行为的关系(1)
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【摘要】 目的 了解安庆市大学生自我评价体型与实际体型的符合程度,探讨自我评价体型、实际体型与不良减肥行为的关系。方法 采取整群抽样方法,抽取安庆市2所大学1 251名学生,采用《青少年健康相关行为问卷(大学)》进行现场调查。结果 大学生体型超重或肥胖检出率为4.68%(58/1 239),其中有77.59%(45/58)的超重或肥胖者认为自己确实超重或肥胖。只有63.7%的大学生能够正确评价自我体型,大学生对体型的自我评价与实际情况的一致性较差(Kappa=0.29),尤以女大学生的一致性更差(Kappa=0.25)。BMI与不良减肥行为之间存在统计学关联,控制年级等协变量后结果一致。当引入自我评价体型后,模型中BMI与不良减肥行为的关联强度明显下降,且差异无统计学意义。结论 部分大学生不能正确评价自己体型,盲目减肥和漠视体重的行为同时存在,自我评价体型在BMI与不良减肥行为之间存在明显的中介作用。
【关键词】 人体质量指数;体型;体重减轻;回归分析;学生
【中图分类号】 R 339.35 【文献标识码】 A 【文章编号】 1000-9817(2010)09-1095-03
Body Image Perception and Unhealthy Weight Control Behaviors Among College Students in Anqing/PAN He-ping*, FANG Chang-song, SU Pu-yu, et al.* School of Public Health, Anhui Medical University, Hefei(230032), China
【Abstract】 Objective To understand the agreement between actual body weight status and body image perception, and to explore the association between actual body weight status, body image perception and unhealthy weight control behaviors. Methods Two universities was selected using cluster sampling method in Anqing City. Information regarding unhealthy weight control behaviors was collected by self-administered questionnaire. Data were analyzed using Pearson Chi-square and multivariate Logistic regression.Results The prevalence of overweight and obesity was 4.68%(58/1 239), but only 77.59%(45/58)considered themselves as obese. Overall 63.7% of students correctly judged their own weight status. The Kappa statistics indicated only a moderate agreement(Kappa=0.29), and the agreement was poor in girls(Kappa=0.25). BMI was significantly associated with both unhealthy weight control behaviors among boys and girls, even after controlling for covariates. However, the significance and magnitude of the association between BMI and unhealthy weight control behaviors were considerably attenuated when body image perception was added to the model.Conclusion Some of students can not correctly assess their own body weight, weight loss and blindly ignore the behavior of weigh coexistence. This study also suggests that body image perception represents a potential mediator between BMI and unhealthy weight control behaviors ......
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