Table 2 Statistical analyses for the reduction in SMoS in spine patients compared to expected population values, separated by age group and gender

Total

74.3 ± 3.63

58.7 ± 1.68

182

− 15.6 (− 18.90 to − 12.30)

< .001

 Male

77.2 ± 9.75

60.0 ± 2.42

90

− 17.2 (− 21.95 to − 12.45)

< .001

 Female

69.7 ± 8.73

57.0 ± 2.40

92

− 12.7 (− 17.40 to − 8.00)

< .001

30–39

75.9 ± 3.90

66.4 ± 4.03

32

− 9.5 (− 17.40 to − 1.60)

< .001

 Male

78.6 ± 9.59

64.1 ± 5.39

20

− 14.5 (− 25.06 to − 3.94)

< .001

 Female

71.2 ± 9.20

70.2 ± 6.03

12

− 1.1 (− 12.83 to 10.83)

0.689

40–49

75.1 ± 3.31

63.4 ± 3.84

41

− 11.7 (− 19.23 to − 4.17)

< .001

 Male

77.5 ± 9.77

59.2 ± 5.39

24

− 18.3 (− 28.86 to − 7.74)

< .001

 Female

70.9 ± 8.20

68.7 ± 5.09

17

− 2.2 (− 12.18 to 7.78)

0.258

50–59

73.7 ± 4.39

68.8 ± 4.35

30

− 4.8 (− 13.42 to 3.62)

0.348

 Male

76.5 ± 9.56

75.2 ± 6.09

14

− 1.3 (− 13.24 to 10.64)

0.465

 Female

68.6 ± 9.30

63.3 ± 5.9

16

− 5.3 (− 16.84 to 6.26)

0.023

60–69

68.5 ± 3.49

57.0 ± 3.2

36

− 11.5 (− 17.77 to − 5.23)

< .001

 Male

74.2 ± 9.71

54.6 ± 4.41

17

− 19.6 (− 28.25 to − 10.95)

< .001

 Female

64.0 ± 8.50

49.7 ± 4.66

19

− 14.3 (− 23.43 to − 5.17)

< .001

70+

60.4 ± 3.53

46.7 ± 2.42

43

− 13.7 (− 18.45 to − 8.95)

< .001

 Male

65.0 ± 10.1

49.9 ± 3.25

16

− 15.1 (− 21.47 to − 8.73)

< .001

 Female

55.5 ± 8.3

44.9 ± 3.33

27

− 10.6 (− 17.13 to − 4.07)

< .001