Table 1 Categorization of different levels of Kappa by strength of agreement
From: Reliability of medical record abstraction by non-physicians for orthopedic research
Kappa | Strength of agreement |
|---|---|
< 0 | Poor |
0 – 0.2 | Slight |
0.2 – 0.4 | Fair |
0.4 – 0.6 | Moderate |
0.6 – 0.8 | Substantial |
0.8 – 1 | Almost perfect |