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

Table 5 Stratification according to nodule size, sex, and age in order to assess heterogeneity

Strata	Observed Agreement	Expected Agreement	Kappa	Standard Error	IC 95%
Nodule Size
<4 cm	85.63%	65.15%	0.5876	0.067	0.46-0.72
≥4 cm	89.67%	66.26%	0.6938	0.083	0.53-0.86
Sex
Men	89.74%	58.32%	0.7539	0.117	0.53-0.98
Women	86.52%	59.30%	0.6689	0.059	0.55-0.78
Age
<50 years old	82.49%	59.91%	0.5632	0.092	0.38-0.74
≥50 years old	89.53%	59.18%	0.7435	0.064	0.62-0.87

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