流动人口健康移民现象再检验：基于2006-2011年CHNS数据的分析

摘要

This paper aims to test the healthy migrant phenomenon,that whether migrants are healthier than the urban resi-dents. Three waves in China Health and Nutrition Survey (CHNS) dataset is employed to test this hypothesis,including the wave of 2006,2009 and 2011. Logistic regression model is established to examine hypothesis by controlling other variables such as gender,age,education,occupation,income and smoking history. Analysis result indicates that migrants are indeed healthier than urban residents in the aspect of historical (long-term)healthy indicators,but the differences between these two groups are not significantly evident in current (recent)healthy indicators. Cox model is established further to better make use of the longitudinal property of CHNS dataset, and Cox regression result also certifies that migrants are healthier than urban people in the aspect of long-term healthy indicators after controlling other variables.%基于中国健康与营养调查2006年、2009年和2011年的数据，检验我国是否存在流动人口健康状况普遍优于城市居民的健康移民现象。建立Logistic回归模型横向分析三个年度的数据得出，流动人口在长期健康指标上的表现优于城市居民，这种差异在控制了年龄、性别、学历、职业、收入和吸烟史等变量后依然保持显著，而两组人群在近期健康指标上的差异总体上不显著。建立Cox回归模型纵向分析三个年度的数据得出，两组人群在近期健康上患病概率并无明显差异，而城市居民患有长期疾病的概率显著高于流动人口，这种差异在控制变量后仍然保持显著。