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Table 3 Reliability of sciatic nerve cross-sectional area / echo intensity in the controls (dominant and nondominant sides) and patients with sciatica (affected and unaffected sides)

From: Test-retest reliability of nerve and muscle morphometric characteristics utilizing ultrasound imaging in individuals with unilateral sciatica and controls

 

Cross-Sectional Area (mm2)

Echogenicity (a.u.)

Trace method

Ellipse method

Mean

SD

ICC

SEM

MDC

Mean

SD

ICC

SEM

MDC

Mean

SD

ICC

SEM

MDC

Dominant

47.76

12.77

0.94

3.10

8.59

47.54

12.59

0.82

5.34

14.76

75.5

26.40

0.74

13.44

37.14

Nondominant

48.01

12.3

0.97

2.14

5.94

47.98

12.51

0.88

4.33

11.96

74.98

21.07

0.71

11.24

31.07

Affected

51.81

10.0

0.91

3.0

8.31

50.97

9.73

0.83

4.01

11.08

70.64

26.48

0.75

13.24

36.59

Unaffected

45.54

9.11

0.90

2.88

7.97

45.11

8.98

0.81

3.91

10.81

71.67

37.28

0.82

15.81

43.70

  1. ICC Intraclass Correlation Coefficient, SEM Standard Error of Measurement, MDC Minimal Detectable Change, a.u. arbitrary units