Table 4 The independent association of social isolation and multiple chronic diseases with the functional disability after stroke in elderly patients by age groups

  No

Ref

  Yes

11.61

(6.22-21.69)

<0.001

11.79

(6.34-21.94)

<0.001

5.48

(2.62-11.5)

<0.001

  0

Ref

  1

1.60

(0.84-3.03)

0.151

3.28

(1.76-6.12)

<0.001

2.73

(1.03-7.2)

0.043

  ≥ 2

1.98

(1.01-3.87)

0.048

5.07

(2.67-9.62)

<0.001

3.94

(1.56-9.94)

0.004

  No

Ref

  Yes

3.81

(2.00-7.28)

<0.001

3.34

(1.73-6.45)

<0.001

1.72

(0.78-3.79)

0.178

  0

Ref

  1

1.37

(0.71-2.67)

0.352

2.21

(1.12-4.37)

0.022

2.18

(0.75-6.37)

0.152

  ≥ 2

1.94

(0.97-3.89)

0.061

3.48

(1.74-6.93)

<0.001

3.03

(1.09-8.41)

0.033

  No

Ref

  Yes

2.31

(1.02-5.25)

0.045

1.23

(0.51-3.00)

0.643

1.01

(0.40-2.55)

0.987

  0

Ref

  1

0.99

(0.44- 2.25)

0.986

2.48

(0.93-6.56)

0.068

1.65

(0.45-6.06)

0.451

  ≥ 2

0.71

(0.29-1.76)

0.457

2.83

(1.06-7.57)

0.039

2.61

(0.77-8.90)

0.125