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Table 2 Summary of the patient demographic data

From: Classification of three-level hybrid surgery for the treatment of cervical degenerative disc disease: a retrospective study of 108 patients

 

Type I

Type II

ACDF

p value

p value

I vs. II

I vs. ACDF

II vs. ACDF

N

50

34

24

    

Gender, na

 Male

 Female

26

24

17

17

13

11

0.952

0.857

0.861

0.755

Age, yearb

51.83 ± 6.86

48.94 ± 8.93

56.67 ± 7.93

0.001

0.098

0.013

0.000

BMIb

24.27 ± 2.92

23.29 ± 2.64

23.61 ± 3.29

0.318

0.142

0.373

0.681

Levels, na

       

 C3–6

12

12

10

0.569

0.471

0.297

0.839

 C4–7

35

21

13

    

 Skip

3

1

1

    

Operation time, minb

165.65 ± 23.25

178.82 ± 23.06

154.58 ± 25.70

0.001

0.016

0.067

0.000

Blood loss, mlb

67.83 ± 28.04

75.00 ± 22.05

61.67 ± 23.53

0.138

0.211

0.334

0.050

FU, monthsb

29.13 ± 14.40

34.03 ± 19.74

29.13 ± 14.19

0.359

0.187

0.999

0.262

  1. ACDF anterior cervical discectomy and fusion, BMI body mass index, FU follow-up
  2. aChi-square test for the three groups
  3. bANOVA test for the three groups and SNK test for each two groups