Table 1 Summary of the patient demographic data

N

47

26

33

Gender, n

 Male

20

13

17

0.692^a

 Female

27

13

16

Age, year

50.87 ± 8.20

47.12 ± 7.39

56.70 ± 12.59

0.002^b

BMI

24.33 ± 3.47

24.80 ± 3.87

24.48 ± 3.28

0.862^b

Levels, n

 C3–6

14

10

10

0.724^a

 C4–7

33

16

23

Operation time, min

164.83 ± 20.78

174.39 ± 23.72

156.24 ± 28.38

0.035^b

Blood loss, ml

70.64 ± 21.00

70.77 ± 18.96

67.27 ± 17.19

0.704^b

FU, mouths

22.15 ± 13.61

21.50 ± 12.44

29.13 ± 9.3

0.378^b