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Table 3 Inter-rater agreement for three observers

From: Validation of pharyngeal findings on sleep nasopharyngoscopy in children with snoring/sleep disordered breathing

  Rater 1 & 2 Rater 2 & 3 Rater 1 & 3
Unweighted K    
Observed 0.85 0.53 0.53
Maximum Possible 0.95 0.69 0.69
Standard Error 0.057 0.08 0.08
95% CI 0.74-0.96 0.37-0.68 0.38-0.68
Linear Weighted K    
Observed 0.83 0.68 0.64
Standard Error 0.07 0.06 0.07
Maximum Possible 0.90 0.74 0.72
95% CI 0.69-0.98 0.56-0.79 0.49-0.78
Proportions of Agreement    
Observed 0.90 0.66 0.66
Maximum Possible 0.97 0.77 0.77
Chance expected 0.35 0.27 0.27
95% CI 0.79-0.96 0.52-0.77 0.52-0.77
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