Association between rural-to-urban migrants’ social medical insurance, social integration and their medical return in China: a nationally representative cross-sectional data analysis

BACKGROUND: Without social medical insurance in the destination areas and with low social integration, rural-to-urban migrants had barriers to health service in the destination areas, some of the migrants had to seek health service in hometown, namely medical return. This study aimed at exploring the association between rural-to-urban migrants’ medical return and social medical insurance type or social integration. METHODS: We analysed a secondary cross-sectional data of the 2014 National Internal Migrant Dynamic Monitoring Survey collected in May of 2014 from all provinces or regions in mainland China. The medical return was measured by the location of hospitalisation, and the social integration included economic integration and permanent settlement intention. RESULTS: Four thousand eighteen rural-to-urban migrants living in current residence at least one year and used inpatient service within the last 12 months were analysed. The rate of medical return for inpatient service was 15.3%. Having medical insurance of hometown (new rural cooperative medical scheme (NRCMS)) (OR = 2.44, 95%CIs 1.80–3.30) was positively related to the medical return. The permanent settlement intention was negatively associated with the medical return (OR = 0.66, 95%CIs 0.48–0.90). CONCLUSIONS: Social medical insurance of hometown (NRCMS) was positively associated with the medical return, while the permanent settlement intention was negatively associated with it. Promoting the transfer of migrants’ social medical insurance across different regions might be helpful to improve rural-to-urban migrants’ health access.