Significance
Landis and Koch (1977) gave the following table for interpreting values. This table is however by no means universally accepted; They supplied no evidence to support it, basing it instead on personal opinion. It has been noted that these guidelines may be more harmful than helpful, as the number of categories and subjects will affect the magnitude of the value. The kappa will be higher when there are fewer categories.
| Interpretation | |
|---|---|
| < 0 | Poor 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 – 1.00 | Almost perfect agreement |
Read more about this topic: Fleiss' Kappa
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