RESUMO
In the past decade, the government of China has implemented healthcare reforms to provide universal access to healthcare by 2020. We aimed to systematically analyse the dynamic changes in health services and equity during the past 10 years to understand the correlation between health services and social-economic status. We performed a longitudinal study in which we extracted aggregated data mainly from a project (2009, 2011, 2012, 2015, 2019). A multi-stage stratified cluster randomized design was used to obtain a representative sample in each county. Concentration indexes were used to analyse the equity of the changes in utilization. We built multivariate random-effects generalized least squares regression models with the panel data to test whether the rate of receiving a medical consultation in the last 2 weeks or the rate of hospital admission or the prevalence of chronic illness was associated with social-economic status including education level and rural disposable income per capita. We found declines in both the rate of not receiving a medical consultation during the last 2 weeks (P < 0.05 intervention group) and the rate of hospital avoidance (P < 0.05) from 2009 to 2019. The equity in residents' health service utilization has improved constantly. We additionally found that rural disposable income per capita is a protective factor for the rate of a receiving a medical consultation during the last 2 weeks and the rate of hospital admission. China's 2009 healthcare reform have positively influenced utilization rates and equity in health service utilization in the past decade, a range of health service-targeted strategies are needed including strengthen the prevention and treatment of chronic diseases, focus attention on the health status of elderly residents and improve social-economic status, especially the level of education.