BACKGROUND: Fairness in health funding has always been a priority in China. This article aims to study the trends in total health expenditure (THE), government health expenditure (GHE), social health expenditure (SHE), and out-of-pocket health expenditure (OOPHE) among China, the world, and upper-middle-income countries from 2000 to 2019. The goal is to provide a theoretical basis for the Chinese government to adjust and formulate health-related policies. METHODS: Aggregate time-series data were collected from the World Health Organization (WHO) and the World Bank (WB) Open Data sources from 2...