Social disparities in body mass index (BMI) trajectories among Chinese adults in 1991-2011.

Social disparities in body mass index (BMI) trajectories among Chinese adults in 1991-2011.
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1991年至2011年中国成年人体重指数(BMI)轨迹的社会差异

DOI:
10.1186/s12939-017-0636-5
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发表时间:
2017-08-16
影响因子:
4.8
通讯作者:
Liang Y
Liang Y
中科院分区:
医学2区
文献类型:
--
作者:
Fang C;Liang Y

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肥胖是中国一个严重的公共卫生问题。肥胖与社会经济地位(SES)之间的关系正在发生变化,并受到不确定性的影响,特别是在发展中国家。身体质量指数(BMI)轨迹的性别相关差异是有争议的,需要大量的经验数据更新和丰富。本研究利用中国健康与营养调查(CHNS)1991-2011年的纵向数据,从动态的角度探讨了中国成年人社会经济地位与体重指数(BMI)的关系。然后,确定了与性别相关的差异。采用分层线性模型。社会经济地位对男性BMI的变化有积极影响,在过去的20年里,高社会经济地位男性的BMI增长速度更快。相比之下,女性BMI仅受BMI基线和居住地区的影响。具体而言,更大的BMI基线导致更大的BMI增长率和更早的BMI下降。在过去的20年里,城市女性的BMI增长率高于农村女性。在中国,社会经济地位与肥胖的关系是复杂的,并且存在显著的性别差异。我们认为,这种巨大的性别相关的差异是由于快速的经济和社会变化,影响了国民健康,增加了性别不平等和女性的社会角色限制。我们为进一步的研究和政策建议提供见解。
Obesity is a serious public health problem in China. The relationship between obesity and socio-economic status (SES) is changing and affected by uncertainty, particularly, in developing countries. The sex-related differences in body mass index (BMI) trajectories are controversial and require substantial empirical data for updating and enriching. This study examined the relationship between SES and BMI in Chinese adults from a dynamic perspective using longitudinal data (1991–2011) from the China Health and Nutrition Survey (CHNS). Then, sex-related differences were determined. A hierarchical linear model was used. SES positively affected the male BMI changes, with faster BMI growth rates in the high-SES males over the past 20 years. By contrast, female BMI was only affected by BMI baseline and residential area. Specifically, greater BMI baseline led to greater BMI growth rate and earlier BMI decline. In the past 20 years, the BMI growth rate has been greater in the urban females than in the rural females. The relationship between SES and obesity is complex in China, and a substantial sex-related difference exists. We argue that this large sex-related difference is due to the rapid economic and social changes that have affected national health and increased the gender inequality and social role restrictions in females. We provide insights for further research and policy recommendations.
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