Table 1 Intra-observer agreement and agreement between observers and the 'golden standard' given as kappa values.
Agreement | Intra-observer % (N) | Each observer versus golden standard % (N) |
|---|---|---|
Slight (0.00-0.20) | 0% (0) | 0% (0) |
Fair (0.21-0.40) | 2% (1) | 2% (1) |
Moderate (0.41-0.60) | 12% (5) | 30% (13) |
Substantial (0.61-0.80) | 63% (27) | 60% (26) |
Almost perfect (0.81-1.00) | 23% (10) | 7% (3) |