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Table 4 Reliability of muscle echo-intensity measures for the maximum rectangular region of interest 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

  Transverse scan (a.u.) Longitudinal scan (a.u.)
Mean SD ICC SEM MDC Mean SD ICC SEM MDC
Dominant
 Multifidus 90.53 18.27 0.81 7.95 21.99 91.83 23.20 0.83 9.56 26.42
 Biceps Femoris 67.89 21.26 0.76 10.40 28.74 59.08 16.86 0.80 7.54 20.84
 Medial Gastrocnemius 79.98 14 0.78 6.57 18.67 84.82 20 0.82 8.48 23.39
 Soleus 104.39 47.16 0.79 21.60 59.70 100.74 45.58 0.81 19.83 54.80
Nondominant
 Multifidus 98.13 20.1 0.75 10.05 27.79 89.75 17.31 0.80 7.74 21.39
 Biceps Femoris 81.90 23.23 0.77 11.13 30.75 78.74 21.48 0.82 9.11 25.17
 Medial Gastrocnemius 79.89 18.67 0.76 9.13 25.23 80.85 14.24 0.83 5.87 16.23
 Soleus 104.03 46.29 0.78 16.85 46.57 100.46 48.82 0.82 20.70 57.21
Affected
 Multifidus 99.41 41.53 0.82 17.61 48.69 98.89 41.1 0.84 16.44 45.43
 Biceps Femoris 73.71 37.82 0.85 14.64 40.45 80.21 42.72 0.80 19.10 52.79
 Medial Gastrocnemius 89.87 45.89 0.83 18.98 52.47 90.55 47.92 0.84 19.17 52.98
 Soleus 99.76 31.22 0.87 11.24 31.08 96.63 32.23 0.89 10.67 29.5
Unaffected
 Multifidus 98.74 42.28 0.82 17.93 49.57 99.76 43.87 0.84 17.55 48.50
 Biceps Femoris 72.11 39.23 0.80 17.54 48.49 74.10 38.03 0.83 15.67 43.32
 Medial Gastrocnemius 80.21 47.97 0.87 17.27 47.72 79.27 48.79 0.86 18.25 50.46
 Soleus 95.89 31.52 0.85 12.2 33.51 97.45 35.02 0.84 14.01 38.72
  1. ICC Intraclass correlation coefficient, SEM Standard Error of Measurement, MDC Minimal Detectable Change, arbitrary units (a.u)
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