摘要
本文将"脆弱性"的概念引入肥胖研究领域,提出了"肥胖脆弱性"的概念,解释了其内涵和测度原则,并重点介绍了肥胖脆弱性的测度方法及其注意事项。"期望肥胖概率"测度方法不依赖于福利函数形态的特点使其更适用于测算肥胖脆弱性,但是,贫困领域常用的"50%"脆弱线则并不适用于肥胖脆弱群体的识别。本文采用"中国健康与营养调查"数据测度了中国居民的肥胖脆弱性,说明了致胖风险的结构和不同类型肥胖脆弱群体的差异。中国居民体质指数的预测均值和预测方差存在"正U型"关系,个体异质性风险在致胖风险中占主导地位,也是肥胖脆弱性水平的关键影响因素,省域协同风险的占比较社区协同风险更高。协同风险占比存在下降趋势,而且北方地区协同风险的占比大幅高于南方地区。"暂时脆弱"群体和"持久脆弱"群体的脆弱原因存在差异,相应地,前者应以缓解随机风险为预防目标,后者则应以提高长期体质管控能力为预防目标。
This article offers an introduction and explanation on the concept of“vulnerability to obesity”,and particular attention is paid to the measurement procedure of vulnerability.The“expected obesity”approach does not depend on welfare function,which makes it more suitable for measuring obesity vulnerability.However,the“50%”vulnerability line commonly used in other fields is not suitable for identifying obesity vulnerable groups.Using the data from China Nutrition and Health Survey,the study measures the obesity vulnerability of Chinese residents.There is a positive U-shaped relationship between the predicted mean and the predicted variance of BMI.Individual specific idiosyncratic shock is dominant in the risk of obesity,and it is also a key influencing factor of vulnerability.The proportion of provincial covariate shocks is higher than that of community covariate shocks.The proportion of covariate shocks has a downward trend,and the proportion in the north is significantly higher than that in the south.There are differences in mechanisms between transitory obesity and structural obesity.The former should aim at alleviating random shock,while the latter should aim at improving the long-term ability of physical control.
出处
《中国农村观察》
CSSCI
北大核心
2021年第6期2-25,共24页
China Rural Survey
基金
国家社会科学基金青年项目“我国城乡居民的食品可持续消费行为研究”(项目号:18CJY014)
国家自然科学基金重点项目“食品安全消费者行为与风险交流策略研究”(项目号:71633005)的阶段性研究成果。
