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Table 1 Kappa values for agreement between initial and second evaluations

From: Are two readers more reliable than one? A study of upper neck ligament scoring on magnetic resonance images

 

Alar ligament scores 0-3

Transverse ligament scores 0-3

Scored by

Right side

Left side

Any side, scores 2-3

Right side

Left side

Any side, scores 2-3

Reader A

0.59 (0.47, 0.70)

0.62 (0.51, 0.73)

0.63 (0.48, 0.78)

0.50 (0.35, 0.64)

0.51 (0.38, 0.64)

0.59 (0.43, 0.75)

Reader B

0.51 (0.39, 0.63)

0.57 (0.44, 0.70)

0.52 (0.35, 0.68)

0.48 (0.32, 0.64)

0.58 (0.45, 0.72)

0.53 (0.38, 0.68)

A and B combined

0.68 (0.56, 0.79)

0.71 (0.61, 0.81)

0.74 (0.61, 0.88)

0.66 (0.53, 0.79)

0.65 (0.54, 0.77)

0.69 (0.54, 0.84)

  1. Values represent linearly weighted kappa values for scores 0, 1, 2, or 3 on each side of the spine, and unweighted kappa values for scores 2–3 vs. scores 0–1 per subject on any side (right and/or left), with 95% confidence intervals in parenthesis, based on magnetic resonance imaging in 102 subjects.