Table 3 Quality of life parameters

 Pre

10.06 ± 1.56

10.33 ± 1.80

0.877

 Post

13.15 ± 1.46

13.20 ± 1.42

0.907

 F/U 2y

13.76 ± 1.18

13.73 ± 1.28

0.823

△JOA(pre vs post)

3.09 ± 1.55

2.87 ± 1.55

0.647

△JOA(pre vs F/U)

3.71 ± 1.59

3.40 ± 2.23

0.912

 Pre vs F/U

< 0.001

< 0.001

RR(pre vs post)

43.65% ± 23.44%

40.45% ± 20.52%

0.390

RR(pre vs F/U)

52.25% ± 19.17%

43.84% ± 35.18%

0.888

 Pre

19.32 ± 4.92

23.33 ± 5.70

0.041

 Post

13.41 ± 3.78

15.53 ± 3.94

0.080

 F/U 2y

11.97 ± 3.56

14.13 ± 4.52

0.078

△NDI(pre vs post)

− 5.91 ± 2.44

− 7.80 ± 2.54

0.018

△NDI(pre vs F/U)

− 7.35 ± 3.05

− 9.20 ± 2.62

0.048

 Pre vs F/U

< 0.001

< 0.001

 Pre

43.76 ± 6.54

42.80 ± 5.56

0.565

 Post

52.12 ± 7.39

52.60 ± 5.83

0.836

 F/U 2y

53.47 ± 7.84

53.13 ± 6.40

0.884

△SF-36(pre vs post)

8.90 ± 4.39

8.41 ± 4.74

0.420

△SF-36(pre vs F/U)

9.88 ± 4.04

8.94 ± 4.56

0.146

 Pre vs F/U

< 0.001

< 0.001