Table 1.

Thresholds for the strength of agreement that have been constructed for Kappa in literature.

Landis and Koch Benchmark Scale for the Kappa Index		Fleiss’s Benchmark Scale for the Kappa Index		Altman’s Benchmark Scale for the Kappa Index
<0.40 0.40 to 0.75 More than 0.75	Poor Intermediate to good Excellent	<0.0	Poor	<0.20	Poor
		0.21 to 0.40	Fair	0.21 to 0.40	Fair
		0.41 to 0.60	Moderate	0.41 to 0.60	Moderate
		0.61 to 0.80	Substantial	0.61 to 0.80	Good
		0.81 to 1.00	Almost perfect	0.81 to 1.00	Very good