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Table 5 Intra- and interobserver reliability analysis and 95% confidence interval

From: Upright, prone, and supine spinal morphology and alignment in adolescent idiopathic scoliosis

  X-ray CT scan MRI scan
Intra Inter Intra Inter Intra Inter
Thoracic Cobb 0.993 (0.971–0.998) 0.972 (0.888–0.993) 0.997 (0.988–0.999) 0.995 (0.980–0.999) 0.995 (0.982–0.999) 0.974 (0.896–0.994)
Lumbar Cobb 0.999 (0.996–1.00) 0.995 (0.980–0.999) 0.999 (0.996–1.00) 0.995 (0.981–0.999) 0.997 (0.990–0.999) 0.986 (0.945–0.997)
Thoracic kyphosis 0.989 (0.954–0.997) 0.922 (0.610–0.984) 0.931 (0.722–0.983) 0.864 (0.454–0.966) 0.992 (0.967–0.998) 0.940 (0.759–0.985)
Lumbar lordosis 0.986 (0.944–0.997) 0.989 (0.956–0.997) 0.995 (0.980–0.999) 0.973 (0.890–0.993) 0.995 (0.981–0.999) 0.971 (0.884–0.993)
Thoracic rotation 0.979 (0.915–0.995) 0.977 (0.906–0.994) a a 0.939 (0.756–0.985) 0.744 (0.409–0.964)
Lumbar rotation 0.975 (0.899–0.994) 0.996 (0.985–0.999) a a 0.906 (0.620–0.977) 0.885 (0.539–0.972)
  1. aIntra- and interobserver reliability for the rotation on 3-D scans; this method was tested previously (ICC 0.92 and 0.89) [9]