Secular trend of BMI and its consistency with selfrated BMI status among Chinese children and adolescents
10.16835/j.cnki.1000-9817.2020.10.013
- VernacularTitle:中国6～18岁儿童青少年体质量指数实测及自评影响因素
- Author:
LI Minchao, YANG Zhiqin, ZHAO Tianwang, LU Guofei,LEI Chaoqiu
1
Author Information
1. Infection Disease Control Department Haining Center for Disease Control and Prevention, Haining(314400), Zhejiang Province, China
- Publication Type:期刊文章
- Keywords:
Body mass index;
Health education;
Regression analysis;
Child;
Adolescent
- From:
Chinese Journal of School Health
2020;41(10):1491-1494
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To describe the secular trend of BMI and its consistency with self-rated BMI status in Chinese children and adolescents, and to further investigate the related factors affecting self-rated BMI,so as to provide a scientific reference for interventional measures.
Methods:A total of 6 238 children and adolescents aged 6-18 years were selected according to date from Chinese Health and Nutrition Svrvey during 2000-2015 and the criteria from National Health Commission of China.The Lambda-Mu-Sigma method(LMS) and Kappa consistency test were, respectively, applied to describe the percentiles for BMI and its agreement with self-rated BMI status. Multinomial Logistic model was used to assess the related factors influencing self-rated BMI status.
Results:P50 and P85 percentiles showed an increasing trend, especially the increase of high percentile of BMI. Regardless of age and sex, the measured and self-rated BMI showed low agreement. More than 50% of over-weighted or underweighted children perceived themselves as normal-weight, and about 1/4 of normal weight students misclassified themselves as abnormal in weight. Urban boys were more likely to evaluate themselves as underweight [OR(95%CI) =1.43(1.18-1.73)]. Boys who favored popular showed[OR(95%CI)=1.80(1.23-2.55) and cartoon [OR (95%CI) =1.39(1.00-1.96)] were more likely to consider themselves as overweight. Girls in the older age group [OR (95%CI)=2.74(2.08-3.61)] and urban [1.53(1.21-1.94)] who favored popular programs [OR(95%CI) =1.74(1.27-2.38)] were more likely to perceived themselves as overweight. But girls who like anime/cartoons were more likely to think they were underweight [OR(95%CI)=1.78(1.33-2.40)].
Conclusion:The trend of BMI has shown an increasing trend in the past decade and it demonstrated a large bias with perceived BMI. Age, area and type of video were significant factors that influenced the self-rated BMI status.
