Disparity of the Chinese elderly's health-related quality of life between urban and rural areas: a mediation analysis.

OBJECTIVES: This study aimed to examine the urban-rural disparity in health-related quality of life (HRQoL) of the Chinese elderly and to explore the mediating roles of socioeconomic status (SES) and frequency of contact with children in the relationship between urban/rural areas and HRQoL. METHODS: This cross-sectional study used data from China Health and Retirement Longitudinal Study for 2015-2016, involving 12 369 Chinese aged 45 years and over. HRQoL of respondents was measured by three-level EuroQol five dimensions (EQ-5D-3L). SES, based on principal components analysis, was combined by the individual possessions of durable consumer goods and houses. Frequency of contact with children was derived from the responses to whether they live with children and how often they contact with them. Mediation analyses were performed to examine the mediating effects of SES and frequency of contact in the relationship between urban/rural areas and HRQoL. RESULTS: Urban respondents had higher scores of HRQoL than rural respondents (p<0.05). As SES and frequency of contact with children increased, the scores of HRQoL of the elderly went up as well. Mediation analyses proved the possible mediating effects of SES and frequency of contact in the relationship between urban/rural areas and HRQoL (0.0713 and 0.0064). The indirect effects induced by SES and frequency of contact were 65.45% and 5.90%, respectively. CONCLUSIONS: There was a significant difference in HRQoL between urban and rural middle-aged and elderly participants, which was partially mediated by urban-rural disparities in SES and frequency of contact with children. Higher SES and frequency of contact with children contributed to higher health status in the Chinese elderly.