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 |