|Net benefit of inpatient care||the absolute amount of reimbursement received(yuan RMB)||Subtract individual payment from the total hospitalization expense|
|Gender||=1 if male; =2 if female.|
|Age||=1 if≤45; =2 if 45–59; =3 if ≥60.|
=1 if married;|
=2 if divorced/single/separated/other.
|Question: What is your present marital status?|
=1 if under primary school;|
=2 if junior;
=3 if high school or above.
|The highest degree of education received or a degree equivalent to an existing cultural level|
=1 if no chronic;|
=2 if one or multiple chronic.
|Question: Have you been diagnosed with any chronic diseases by a doctor? Chronic diseases listed subsequently.|
|Distance to the medical institution||=1 if < 1 km; =2 if≥1 km.||Question: How many kilometers is the nearest medical institution from your home?|
|Willingness to seek medical services||
=1 if primary hospital(village/private clinics/community health service station/township hospital/community health service center);|
=2 if general hospital or TCM hospital (traditional Chinese medicine)
|Question: For general diseases, what kind of medical institutions do you and your family members go to?|
|Health status (EQ-VAS: self-reported)||=1 if very poor(0–20); =2 if poor(21–40); =3 if medium(41–60); =4 if good(41–80); =0 if excellent(81–100).||Health status on a 20 cm vertical scale with end points of 0 and 100 was asked on the day of the interview.|
|Employment status||=1 if employment; =2 if retirement; =3 if student or unemployment.||Question: What is your present employment situation? [conditions listed below, read one by one]|
|Per capita income||Household per capita income over the last year(yuan RMB)|