Table 4.
Coordinates for the ROC curve of the Y-BOCS-II using all participants.
| Y-BOCS-II cut-off score | Sensitivity (%) | Specificity (%) |
|---|---|---|
| 0.50 | 96.2 | 72.6 |
| 1.50 | 94.2 | 76.3 |
| 2.50 | 94.2 | 78.5 |
| 3.50 | 94.2 | 81.5 |
| 4.50 | 92.3 | 84.4 |
| 5.50 | 90.4 | 88.9 |
| 6.50 | 90.4 | 91.1 |
| 7.50 | 90.4 | 91.9 |
| 8.50 | 90.4 | 92.6 |
| 9.50 | 88.5 | 93.3 |
| 10.50 | 86.5 | 93.3 |
| 11.50 | 84.6 | 96.3 |
| 13.00 | 84.6 | 97.0 |
| 14.50 | 76.9 | 97.8 |
| 15.50 | 76.9 | 98.5 |
| 16.50 | 76.9 | 99.3 |
| 17.50 | 75.0 | 99.3 |
| 18.50 | 73.1 | 99.3 |
| 19.50 | 67.3 | 99.3 |
| 20.50 | 63.5 | 99.3 |
| 21.50 | 59.6 | 99.3 |
| 22.50 | 55.8 | 99.3 |
| 23.50 | 50.0 | 99.3 |
| 24.50 | 44.2 | 99.3 |
| 25.50 | 40.4 | 100.0 |
For each coordinate (Y-BOCS-II total score), its sensitivity and specificity in identifying OCD are shown. The total score with the best sensitivity and specificity for diagnosis of OCD is shown in bold. ROC, Receiver operating characteristic; Y-BOCS-II, Yale-Brown Obsessive-Compulsive Scale-II; OCD, Obsessive-compulsive disorder.