Predictive value of the SICH score
| Score | Retrospective-Derivation Cohort (n = 623) | Prospective-Validation Cohort (n = 222) | All Patients (n = 845) | |||
|---|---|---|---|---|---|---|
| No. (%) | % Positive CTAs | No. (%) | % Positive CTAs | No. (%) | % Positive CTAs | |
| 0 | 37 (5.9) | 0 | 15 (6.8) | 0 | 52 (6.1) | 0 |
| 1 | 145 (23.3) | 1.4 | 67 (30.2) | 1.5 | 212 (25.1) | 1.4 |
| 2 | 209 (33.5) | 5.3 | 68 (30.6) | 4.4 | 277 (32.8) | 5.1 |
| 3 | 138 (22.2) | 18.1 | 40 (18.0) | 20 | 178 (21.1) | 18.5 |
| 4 | 61 (9.8) | 39.3 | 21 (9.5) | 38.1 | 82 (9.7) | 39 |
| 5 | 28 (4.5) | 85.7 | 10 (4.5) | 80 | 38 (4.5) | 84.2 |
| 6 | 5 (0.8) | 100 | 1 (0.4) | 100 | 6 (0.7) | 100 |
| AUC (95% CI) | 0.86 (0.83–0.89) | 0.87 (0.82–0.91) | 0.87 (0.84–0.89) | |||
| MOP | >2 | >2 | >2 | |||
| Sensitivity | 85.7 | 86.2 | 85.8 | |||
| Specificity | 71.1 | 75.6 | 72.3 | |||
| P value | <.0001 | <.0001 | <.0001 | |||