Fleiss' κ values were interpreted according to the criteria defined by Landis and Koch 23: −1.00, total disagreement; 0.00, no agreement; 0.01 0.20, slight agreement; 0.21 0.40, fair agreement; 0.41 0.60 moderate agreement; 0.61 0.80 substantial agreement; 0.81 0.99 almost perfect agreement and 1.00, perfect agreement.
When a three-zone risk system was taken into account, at risk agreement and perfect agreement showed 39%and58%8%, respectively.
The κ-statistics were interpreted as < 0.00, poor agreement; 0.00 0.20, slight agreement; 0.21 0.40, fair agreement; 0.41 0.60, moderate agreement; 0.61 0.80, substantial agreement; 0.81 1.00, almost perfect agreement.
The kappa values were interpreted as follows: <0, no agreement; 0 0.19, poor agreement; 0.20 0.39, fair agreement; 0.40 0.59, moderate agreement; 0.60 0.79, substantial agreement; 0.80 1.00, almost perfect agreement [ 13].
Values of κ <0 indicate no agreement, 0 0.20 slight agreement, 0.21 0.40 fair agreement, 0.41 0.60 moderate agreement, 0.61 0.80 substantial agreement and 0.81 1 almost perfect agreement.
Kappa statistics less than 0.00 were considered poor agreement; 0.00 – 0.20 slight agreement; 0.21 – 0.40 fair agreement; 0.41 – 0.60 moderate agreement; 0.61 – 0.80 substantial agreement; and 0.81 – 1.00 almost perfect agreement.
The ICC ranges from = (no agreement) to 1 (perfect agreement), and a value greater than 0.75 is considered excellent agreement.
A k ≤ 0.20 was interpreted as slight agreement; 0.21 0.40, fair agreement; 0.41 0.60, moderate agreement; 0.61 0.80, substantial agreement; and ≥0.81, almost perfect agreement [ 18].
A kappa value of <0.20 indicates slight agreement, 0.21 0.40 fair agreement, 0.41 0.60 moderate agreement, 0.61 0.80 substantial agreement, and >0.81 almost perfect agreement [ 32].
Kappa of 0 0.2 indicates slight agreement; 0.21 0.4, fair agreement; 0.41 0.6, moderate agreement; 0.61 0.8, substantial agreement; and 0.81 0.99 almost perfect agreement [ 11].
