Table 3 Variable definition for related factors and demand of the medical-nursing combined service

Gender

X1

Male =1,Female = 2

Marital status

X2

Married = 1, Unmarried = 2, Divorced or widowed = 3

Education

X3

Elementary school and below = 1, Junior high school = 2, Senior high school or technical secondary school = 3, Junior college = 4, Bachelor degree or above = 5

Pre-retirement occupation

X4

State functionary = 1, Public institution personnel = 2, Enterprise staffs = 3, Other

Number of children

X5

0 = 1, 1 = 2, 2 = 3,  ≥ 3 = 4

Income per month(RMB)

X6

<2000 = 1, 2000 ~ 4000 = 2, 4000 ~ 6000 = 3, >6000 = 4

Self-rated health

X7

Good = 1, Fair = 2, Poor = 3

Type of endowment insurance

X8

Endowment insurance for urban workers = 1, Endowment insurance for urban and rural residents = 2, Enterprise annuity = 3, Commercial insurance = 4, Not have = 5

Type of medical insurance

X9

Medical insurance for urban workers = 1, Medical insurance for urban and rural residents = 2,Commercial insurance = 3, Not have = 4

The current way of old-age care

X10

Family endowment = 1, Community endowment = 2,Institution endowment = 3,

Other = 4

Demand of the elderly

X11

Medical care = 1, Assisted living = 2, Mental care = 3, Leisure and entertainment = 4

Self-care ability

X12

Have self-care ability = 1, Need help from others = 2, No self-care ability = 3

Knowledge of the combination with medical care

X13

Never heard = 1, Heard but not understood = 2, Have gained some understanding = 3, Know well = 4

Willingness to pay in combination with medical care per month(RMB)

X15

<1000 = 1, 1000 ~ 2000 = 2, 2000 ~ 3000 = 3, >3000 = 4

Demand in combination of medical care

Y

Yes = 1, No = 2