Table 7.
Classification table for the CAN-BLEED score: no-CT model
| Score cut-off | No. of patients | Sensitivity (95% CI) | Specificity (95% CI) | Positive predictive value (95% CI) | Negative predictive value (95% CI) | Predicted probability at score, % |
|---|---|---|---|---|---|---|
| 0 | 890 | 100 (97.3 to 100.0) | 0 (0 to 0) | 14.9 (12.7 to 17.5) | NA | 14.9 |
| 1 | 514 | 95.5 (90.4 to 98.3) | 48.9 (45.3 to 52.5) | 24.7 (21.0 to 28.7) | 98.4 (96.6 to 99.4) | 24.7 |
| 2 | 240 | 82.0 (74.4 to 88.1) | 82.7 (79.8 to 85.3) | 45.4 (39.0 to 52.0) | 96.3 (94.6 to 97.6) | 45.4 |
| 3 | 126 | 63.9 (55.1 to 72.1) | 94.6 (92.7 to 96.1) | 67.5 (58.5 to 75.5) | 93.7 (91.8 to 95.3) | 67.5 |
| 4 | 66 | 39.9 (31.5 to 48.7) | 98.3 (97.1 to 99.1) | 80.3 (68.7 to 89.1) | 90.3 (88.1 to 92.2) | 80.3 |
| 5 | 24 | 18.1 (11.9 to 25.7) | 100 (99.5 to 100.0) | 100 (85.6 to 100.0) | 87.4 (85.0 to 89.6) | 100.0 |
| 6 | 4 | 3.0 (0.8 to 7.5) | 100 (99.5 to 100.0) | 100 (39.8 to 100.0 | 85.4 (82.9 to 87.7) | 100.0 |
| 7 | 0 | 0 (0 to 0) | 100 (99.5 to 100.0) | NA | 85.1 (82.5 to 87.3) | NA |
CI = confidence interval; CT = computed tomography; NA = not applicable.