Table 1 Baseline characteristics between patients who achieved and did not achieve MCID

No. of patients

126

94

32

Age (in years)

73.0 ± 5.9

72.6 ± 6.0

74.1 ± 5.4

0.221

Gender

-Female

80

58

22

0.192

-Male

46

36

10

BMI (in kg/m²)

25.0 ± 3.8

24.8 ± 3.9

25.6 ± 3.6

0.301

Hypertension

76

55

21

0.477

Diabetes

47

37

10

0.412

Cardiovascular disease

26

17

9

0.225

Cerebrovascular disease

14

10

4

0.752^a

Charlson comorbidity index (Mean ± SD)

1.0 ± 0.9

1.0 ± 0.9

1.0 ± 0.9

0.776

Surgical invasiveness index (Mean ± SD)

10.5 ± 3.3

10.2 ± 3.4

11.3 ± 2.5

0.112

Comprehensive complication index (Mean ± SD)

8.1 ± 11.4

7.9 ± 11.4

8.6 ± 11.7

0.768

Preoperative ODI

49.0 ± 13.6%

51.5%±11.8%

41.6%±15.8%

< 0.001

Finial followup ODI

18.7 ± 16.5%

12.1%±10.3%

38.0 ± 16.2%

< 0.001

Mean follow-up (in months)

17.9 ± 3.9

18.0 ± 4.1

17.8 ± 3.7

0.828