Table 1.

Strength of agreement according to Kappa values

Kappa value	Strength of agreement
<0.00	Poor
0.00 to 0.20	Slight
0.21 to 0.40	Fair
0.41.0.60	Moderate
0.61 to 0.80	Substantial
0.81 to 1.00	Almost perfect

Interpretation of the strength of agreement with the calculated kappa values according to the criteria for assessing the extent of agreement of Landis and Koch