“…Based on these four categories of social determinants of health and demographic background information, we collected data of the total population (demographic category), local economic status (prefecture GDP per capita, portion of the secondary industry in GDP, portion of the tertiary industry in GDP, local financial income per capita, local financial expenditure per capita, socioeconomic category), health care system status (the number of hospitals per 10,000 individuals, the number of doctors per 10,000 individuals, the number of hospital beds per 10,000 individuals, health system category), and infrastructure status (the density of roads, and the average road network travel time to the nearest high-speed rail station, infrastructure category). All data are collected from the 2019 China's statistical yearbook or calculated based on the 2019 open street map road network ( openstreetmap.org ) and high-speed rail information, the most recent such data ( Yu, Murakami, et al, 2020 ; Yu, Zhang, Wu, Li, & Li, 2021 ).…”