Agreement for the five CCSVI criteria between the first and the second operator
| Criterion (N) | Concordant+ | Concordant− | Percentage of agreement | κ | 95% CL |
|---|---|---|---|---|---|
| I (93) | 12 | 55 | 72.0 | 0.29 | 0.08 to 0.50 |
| II (64) | 0 | 61 | 95.3 | −0.02 | −0.05 to 0.01 |
| III (93) | 29 | 28 | 61.3 | 0.23 | 0.03 to 0.43 |
| IV (93) | 0 | 75 | 80.7 | −0.09 | −0.15 to 0.3 |
| V (93) | 3 | 76 | 85.0 | 0.22 | −0.06 to 0.50 |
CCSVI, chronic cerebrospinal venous insufficiency; CL, confidence limit.