Table 2 OLS regression analysis of informal caregivers’ burden related factors

Gender of caregivers: Female (ref: Male)

-0.54

2.07

-0.26

0.795

(-4.60, 3.52)

Age of caregivers: 66 and above (ref: 65 and below)

-6.05

2.36

-2.57

0.011

(-10.68, -1.42)

Education of caregivers: Secondary and above (ref: Primary schools and below)

3.61

1.59

2.27

0.023

(0.49, 6.73)

Self-rated health of caregivers: Poor (ref: Good)

-1.33

1.87

-0.71

0.477

(-5.01, 2.34)

Employment status: Unemployment (ref: Employment)

-0.66

1.55

-0.42

0.672

(-3.71, 2.39)

Caregiver: other relatives (ref: Spouse)

4.12

1.88

2.19

0.029

(0.42, 7.81)

Caregiving Time (ref: ≤4 )

5-8

-0.22

2.30

-0.10

0.923

(-4.75, 4.30)

9-12

4.41

2.15

2.05

0.041

(0.18, 8.63)

>13

5.02

1.83

2.75

0.006

(1.44, 8.61)

Gender of patients: Female (ref: Male)

-2.56

2.03

-1.26

0.207

(-6.55, 1.42)

Age of patients: 66 and above (ref: 65 and below)

5.52

2.34

2.36

0.018

(0.93, 10.11)

Education of patients: Educated (ref: Illiterate)

2.99

1.98

1.51

0.131

(-0.90, 6.88)

Self-rated health of patient: Poor (ref: Good)

10.61

1.58

6.72

0.000

(7.51, 13.71)

Patients suffered from chronic diseases: No (ref: Yes)

-5.31

2.49

-2.13

0.033

(-10.19, -0.42)

Savings: No (ref: Yes)

-1.52

1.58

-0.96

0.336

(-4.61, 1.58)

Debt: No (ref: Yes)

-6.88

1.63

-4.22

0.000

(-10.08, -3.68)

Total annual per capita income (ref: Q1)^a

Q2

-5.10

2.08

-2.45

0.015

(-9.20, -1.01)

Q3

-7.20

2.07

-3.47

0.001

(-11.26, -3.13)

Q4

-11.13

2.16

-5.16

0.000

(-15.37, -6.90)

Log OOP

1.28

0.69

1.87

0.062

(-0.06, 2.63)

Covered by medical aid system: Yes (ref: No)

-7.31

3.01

-2.43

0.016

(-13.23, -1.40)

Area (ref: Yantai)

Weifang

-3.70

1.76

-2.10

0.036

(-7.15, -0.24)

Heze

-0.22

2.09

-0.10

0.918

(-4.31, 3.88)