Table 1 Comparison of the average facet angle between male and female

No.^a

50

70

-

55

65

0.515

Age^b

52.95 ± 12.03

51.66 ± 10.45

0.547

53.27 ± 11.52

54.58 ± 10.64

0.518

(34, 78)

(33, 77)

(35, 79)

(34, 78)

BMI^b

23.56 ± 2.21

23.64 ± 2.56

0.856

22.98 ± 2.35

23.01 ± 2.65

0.958

(19.36, 27.66)

(18.37, 28.52)

(19.61, 27.55)

(18.44, 28.34)

C2-C3^b

50.49 ± 9.32

52.90 ± 7.68

0.035

53.42 ± 7.57

54.81 ± 5.62

0.116

(26.5, 62.3)

(28.6.5, 61.5)

(29.2.5, 62.7)

(30.5, 63.8)

C3-C4^b

49.77 ± 8.20

50.77 ± 8.73

0.265

54.88 ± 8.96

56.16 ± 6.68

0.209

(31.7, 69.2)

(30.2, 70.1)

(32.4, 70.3)

(33.6, 74.6)

C4-C5^b

48.96 ± 6.92

48.76 ± 8.14

0.838

56.87 ± 6.09

56.47 ± 7.13

0.648

(36.4, 69.6)

(34, 69.3)

(38.5, 69.6)

(40.5, 70.1)

C5-C6^b

52.71 ± 7.32

51.12 ± 8.40

0.130

55.68 ± 6.40

57.20 ± 6.38

0.069

(38.6, 72.1)

(36.1, 70.3)

(40.9, 71.5)

(40.2, 72.9)

C6-C7^b

55.74 ± 9.37

56.39 ± 8.55

0.647

61.55 ± 7.40

62.92 ± 7.30

0.151

(40.2, 71.9)

(40.2, 71.9)

(45.2, 74)

(43.8, 75.4)