Table 1 Research Indicators and data sources
Variable | Symbol | Description | Source |
|---|---|---|---|
Explained variable | ICHE | Incidence of catastrophic health expenditure | CHARLS |
Core explanatory variable | AQI | Air Quality Index | China National Environmental Monitoring Centre, CNEMC |
Socio-demographic factor | SR | Sex Ratio | CHARLS |
AG | Ageing, proportion of families with older adaults (> = 65) | CHARLS | |
Economic factor | GDP | Gross domestic product (hundred million CNY) | China City Statistical Yearbook-2019 |
UR | Urbanisation rate | China City Statistical Yearbook-2019 | |
Insurance factor | ICR | Insurance coverage Rate | CHARLS |
Health service factor | OOP | Out-of-pocket payment (CNY) | CHARLS |
IOEXP | Inpatient and outpatient medical expenses (CNY) | CHARLS | |
UROS | Utilisation rate of outpatient service | CHARLS | |
URH | Utilisation rate of hospitalisation | CHARLS | |
NHB | Number of hospital beds per ten thousand people | China City Statistical Yearbook-2019 | |
ND | Number of doctors per thousand people | China City Statistical Yearbook-2019 | |
NH | Number of hospitals | China City Statistical Yearbook-2019 | |
NCDs | Prevalence of non-communicable diseases | CHARLS | |
DA | Prevalence of disability | CHARLS |