乡城流动与我国城乡居民的自评健康——使用锚点情境法评估回答异质性的影响

Rural-urban Migration and Self-rated Health Among Chinese Population:Using Anchoring Vignette Method to Examine the Effects of Response Heterogeneity

已有研究常通过比较不同迁移群体的自评健康水平来检验迁移与健康的关系。然而,基于主观指标得出的乡城人口流动与健康的关系可能同时反映了实质性健康差异,以及不同迁移群体进行主观健康评价时的回答异质性。文章使用2014年中国劳动力动态调查(CLDS2014)数据,借助锚点情境法测量及纠正了不同迁移群体在自评健康上的回答异质性。结果显示,返乡移民相对于乡城流动人口更低的自评健康主要是因为该群体在评价健康时相对更加"悲观",因而倾向于低估其实际健康状况。

Previous researches usually investigate the relationship between migration and health through comparing the average levels of self-rated health of different migration groups.However,the association between self-rated health and internal migration may reflect both substantive health difference and response heterogeneity of various migration groups.Exploring the related anchoring vignettes in CLDS2014 survey,this paper measures and purges out the confounding impacts driven by response heterogeneity in evaluating general health.Main findings suggest that the significantly lower self-rated health level of returning migrants comparing to rural-urban migrants may mainly due to their pessimism in rating their health.