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Table 5 Association of neurophysiological tests with dichotomous variables in the patient group

From: Neurophysiologic evaluation of patients with cervical spondylotic myelopathy

Variables

H-reflex

Cutaneous silent period (ms)

Cortical silent period (ms)

latency, (ms)

H/M AR

Onset

Duration

Onset

Duration

Gender

Male

18.03 ± 2.28

0.38 ± 0.18

82.71 ± 17.06

33.48 ± 8.06

55.47 ± 9.0

53.93 ± 15.21

Female

17.5 ± 2.06

0.2 ± 0.08

83.42 ± 12.45

30.91 ± 5.14

49.97 ± 6.4

53.28 ± 14.35

p-value

0.664

0.046*

0.928

0.484

0.194

0.764

Occupation

Workers

19.1 ± 2.98

0.32 ± 0.11ab

75.1 ± 19.33

34.58 ± 9.87

52.5 ± 10.85

51.17 ± 16.74

Housewives

17.88 ± 2.17

0.15 ± 0.06b

88.1 ± 4.80

30.90 ± 5.75

48.76 ± 6.35

52.1 ± 14.84

Officers

17.43 ± 0.51

0.47 ± 0.40a

93.88 ± 15.32

29.58 ± 6.25

57.68 ± 3.31

62.7 ± 16.23

Others

16.9 ± 1.75

0.38 ± 0.84ab

78.36 ± 14.03

34.8 ± 6.5

57.38 ± 9.24

49.46 ± 9.74

p-value

0.473

0.153

0.212

0.636

0.328

0.558

Nurick grade

1

18.0 ± 2.83

0.30 ± 0.14

81.50 ± 9.90a

33.0 ± 8.48

51.65 ± 7.27

42.55 ± 3.61

2

17.38 ± 1.62

0.36 ± 0.26

89.62 ± 11.62a

33.15 ± 6.5

51.65 ± 11.95

56.67 ± 14.33

3

17.85 ± 2.55

0.28 ± 0.13

70.17 ± 12.94b

33.3 ± 8.83

52.53 ± 9.54

52.69 ± 16.51

4

21.7 ± 0.00

0.30 ± 0.0

108.0 ± 0.0c

23.7 ± 0.00

60.1 ± 0.0

45.0 ± 0.0

p-value

0.339

0.912

0.011*

0.689

0.850

0.603

MRI lesion

C3–C4

18.95 ± 3.08

0.40 ± 0.11

71.02 ± 17.46a

40.2 ± 8.17a

50.6 ± 12.47

56.75 ± 19.38

C4–C5

16.0 ± 0.0

0.23 ± 0.11

75.12 ± 11.84a

27.8 ± 3.31b

56.95 ± 9.62

53.15 ± 13.78

C5–C6

18.09 ± 2.11

0.27 ± 0.12

86.78 ± 11.59ab

33.31 ± 6.13ab

52.07 ± 7.23

48.38 ± 10.33

C6–C7

17.65 ± 0.5

0.5 ± 0.56

97.6 ± 16.39b

27.5 ± 5.73b

59.2 ± 1.56

63.53 ± 19.77

p-value

0.372

0.362

0.069

0.037*

0.475

0.450

  1. Different small letters indicate significant differences, *Statistically significant at ≤ 0.05
  2. AR amplitude ratio