Table 1 Summary of the patient demographic data (Displayed as a number or mean ± standard deviation)

No. of patients, n

64

62

–

No. of arthroplasty levels, n

66

66

–

Age (range), years^a

46.11 ± 7.87 (26–62)

43.81.58 ± 7.99 (28–63)

0.106

Sex (M/F)^c

32/32

21/41

0.067

BMI^a

23.67 ± 2.87

23.17 ± 3.11

0.354

T-value^a

0.48 ± 1.16

0.45 ± 1.26

0.925

Cause^b

0.051

 Disc herniation

43

53

 Spondylosis

23

13

Surgery type^b

0.996

 1-level CDA

31

30

 2-level CDA

14

13

 2-level HS

20

19

Levels^b

0.008

 C4/5

12

24

 C5/6

38

37

 C6/7

16

5

Operative time (range), min^a

131.83 ± 36.95 (60–225)

135.29 ± 38.53 (60–300)

0.608

Blood loss (range), ml^a

56.11 ± 33.47 (5–150)

66.69 ± 58.94 (10–350)

0.216

Follow-up (range), months^a

35.95 ± 23.26 (18–120)

38.27 ± 23.13 (13–109)

0.587