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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