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. 2017 Dec 6;17:159. doi: 10.1186/s12911-017-0568-4

Table 4.

Kappa interpretation rules by Landis and Koch (1977)

Kappa Statistic Strength of agreement
0.00 Poor
0.00-0.20 Slight
0.21-0.40 Fair
0.41-0.60 Moderate
0.61-0.80 Substantial
0.81-1.00 Almost Perfect