Table 5 Multiple linear regression analysis based on demographic information and health-related factors

Demographic information factors

Constant term

38.693

4.706

8.222

< 0.001

Age (years)

0.093

0.035

2.673

0.008

Educational level

Primary school

Ref

Junior high school level

-1.890

0.957

-1.975

0.049

Occupation

Farming

Ref

Government/Institution/Enterprise

-8.160

2.288

-3.567

< 0.001

Retired

2.264

1.337

1.693

0.091

Marital status

Single/Widow/Divorced

Ref

Married/Non-marital union

1.602

0.531

3.019

0.003

Income status

Less than 1000 RMB

Ref

More than 5000 RMB

-5.970

2.390

-2.498

0.013

Health-related factors

Self-rated health score

-0.072

0.032

-2.223

0.026

Duration of chronic disease

Without chronic disease

Ref

Between 2 and 3 years

4.315

2.242

1.924

0.055

More than 3 years

4.759

0.934

5.097

< 0.001

Duration of integrated care service

Less than 1 year

Ref

Between 1 and 2 years

11.311

2.544

4.447

< 0.001

Between 2 and 3 years

13.917

2.790

4.989

< 0.001

More than 3 years

14.017

2.043

6.860

< 0.001

Frequency of health interactions

Scarcely

Ref

Sometimes

7.942

2.064

3.848

< 0.001

Often

13.555

2.012

6.737

< 0.001

Always

19.063

2.106

9.050

< 0.001