Risk factors of medical expense in China and statistical models

This paper examines the risk factors of medical expense in China and applies statistical models to analyze these factors. Adopting data from social and private health insurance, this paper discusses the application of some multi‐variable statistical models in analyzing the risk factors of medical service utilization and medical expense. This study concludes that while the medical service utilization rate mainly depends on some hazard characteristics of the insured, the main risk factors of medical expense come from doctors and hospitals. The study also shows that an analysis of risk factors is useful for the risk control in health insurance, but the statistical models should be used properly according to the type of data.