Table 1 Variable definitions
Variables | Definition and Description |
|---|---|
Health Expenditures | |
 Outpatient care expenditures | Outpatient care expenditures during the past 1 month (yuan) |
 Inpatient care expenditures | Inpatient care expenditures during the past 1 year (yuan) |
 Self-treatment expenditures | Self-Treatment expenditures during the past 1 month (yuan) |
Demographics | |
 Age | 1 = 45–54 years, 2 = 55–64 years, 3 = 65–74 years, 4 =  ≥ 75 years |
 Gender | 1 = male, 0 = female |
Circumstances | |
 Urban/rural residence | 1 = rural, 0 = urban |
 Basic medical insurance | 1 = yes, 0 = no |
 Outpatient OOP ratio | Percentage of OOP expenses in total outpatient expenses during the past 1 month (%) |
 Inpatient OOP ratio | Percentage of OOP expenses in total inpatient expenses during the past 1 year (%) |
 Self-treatment OOP ratio | Percentage of OOP expenses in total self-treatment expenses during the past 1 month (%) |
 Distance | Distance from home to the medical facility for the most recent visit (km) |
 Education | 1 = primary education (primary school and below), 2 = secondary education (middle school/high school/vocational school), 3 = higher education (college degree, bachelor’s degree and above) |
 Work status | 0 = no work or retirement, 1 = agricultural work, 2 = other work |
 Income | Personal annual income (yuan) |
Efforts | |
 Self-reported health status | 1 = very good, 2 = good, 3 = fair, 4 = poor, 5 = very poor |
 Chronic disease | Number of chronic diseases |
 Supplemental medical insurance | 1 = yes, 0 = no |
 Physical examination | 1 = yes, 0 = no |