Reader (n) | Cut-off level | Sensitivity % | Specificity % | κ | |
SHS | SENS | ||||
1 (n = 251) | SDC = 4.98 | SDC = 2.28 | 65.4 | 97.3 | 0.66 |
2* | 1* | 88.7 | 81.5 | 0.61 | |
2 (n = 189) | SDC = 4.98 | SDC = 2.28 | 45.0 | 99.4 | 0.57 |
3* | 1* | 82.4 | 85.8 | 0.58 |
SHS, Sharp–van der Heijde Score; SENS, Simplified Erosion Narrowing Score; SDC, smallest detectable change; n, number of patients.
*ROC-based reader specific cut-offs.