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Table 4 Kappa comparison according to the estimation method

From: Concordance between the TIRADS ultrasound criteria and the BETHESDA cytology criteria on the nontoxic thyroid nodule

Kappa Observed Agreement Expected agreement Kappa Standard error IC 95% Z Value p
Global 65.56% 25.27% 0.5391 0.0425 0.46–0.62 12.68 <0.001
Weighted (linear weights) 87.22% 58.76% 0.6901 0.0528 0.59–0.79 13.07 <0.001
Estimated (quadratic weights 94.63% 72.86% 0.8021 0.0731 0.66–0.94 10.97 <0.001
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Thyroid Research

ISSN: 1756-6614