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Table 6 Correlation between COPD severity and nerve affection

From: Neurophysiological biomarkers of peripheral nervous system affection in patients with stable chronic obstructive pulmonary disease (COPD)

 

I

II

III

IV

Statistics

No.

%

No.

%

No.

%

No.

%

Test

P value

Motor

Median

Normal

3

100

23

92

2

25

0

0

24.09

 < 0.001*

Abnormal

0

0

2

8

6

75

4

100

Ulnar

Normal

3

100

22

88

4

50

2

50

7.65

0.056 (N)

Abnormal

0

0

3

12

4

50

2

50

Radial

Normal

2

66.7

24

96

4

50

3

75

9.68

0.021

Abnormal

1

33.3

1

4

4

50

1

25

Common peroneal

Normal

3

100

23

92

0

0

0

0

31.91

 < 0.001*

Abnormal

0

0

2

8

8

100

4

100

Posterior tibial

Normal

3

100

25

100

5

62.5

0

0

27.01

 < 0.001*

Abnormal

0

0

0

0

3

37.5

4

100

Sensory

Median

Normal

3

100

21

84

1

12.5

0

0

21.93

 < 0.001*

Abnormal

0

0

4

16

7

87.5

4

100

Ulnar

Normal

3

100

23

92

3

37.5

0

0

21.36

 < 0.001*

Abnormal

0

0

2

8

5

62.5

4

100

Radial

Normal

3

100

24

96

4

50

0

0

23.02

 < 0.001*

Abnormal

0

0

1

4

4

50

4

100

Sural

Normal

3

100

20

80

0

0

0

0

23.63

 < 0.001*

Abnormal

0

0

5

20

8

100

4

100