Performance of mTBI discharge decision rule and BIG criteria
| mTBI Risk Score | |||
| N=961 | Deteriorated | No deterioration | |
| Risk= 0 (discharge ED) | 0 | 34 (3.5%) | Sensitivity 100% (95% CI: 97% to 100%) |
| Risk> 0 (Inpatient admission) | 234 | 693 | Specificity 4.7% (95% CI: 3.3% to 6.5%) |
| BIG Criteria | |||
| N=921 | Deteriorated | No deterioration | |
| BIG 1 (discharge ED) | 12 | 93 | Sensitivity 94% (95% CI: 90.5% to 97%) |
| BIG 2/3 (Inpatient admission) | 210 | 606 | Specificity 13.3% (95% CI: 10.9% to 16.1%) |