Table 1 Covariate measurement and attributes
Variable | Mean (SD) or frequency (%) |
|---|---|
Gender (Female) | 51.09 |
Age | 66.16 (4.02) |
Marital status | |
 Married and live with a spouse | 80.68 |
 Married but not living with spouse temporarily for reasons such as work | 4.17 |
 Separated, no longer live together as a couple anymore | 0.26 |
 Divorced | 0.85 |
 Widowed | 13.45 |
 Never married | 0.56 |
 Cohabitation | 0.04 |
Education background | |
 No formal education (illiterate) | 26.80 |
 Did not finish primary school | 24.63 |
 Sishu/Home school/Elementary school | 21.43 |
 Middle school | 17.29 |
 High school | 6.60 |
 Vocational school | 2.09 |
 Two−/Three-Year College/Associate degree | 0.77 |
 Four-Year College/Bachelor’s degree /Master’s degree/Doctoral degree/Ph.D. | 0.39 |
Smoking (Yes) | 47.58 |
Drinking | |
 No | 69.98 |
 Drink but less than once a month | 7.38 |
 Drink more than once a month | 22.64 |
Sleep duration per day | 6.19 (2.04) |
Residential area | |
 Central of City/Town | 19.55 |
 Urban-Rural Integration Zone | 7.25 |
 Rural | 72.83 |
 Special Zone | 0.37 |
Insurance (Yes) | 96.81 |