Statistical metrics describing the accuracy of the Pitch Side Concussion Assessment (PSCA) tool
| Accuracy metric for the PSCA tool | Point estimate | 95% CI |
|---|---|---|
| Concussion prevalence | 39.0% | 32.0 to 47.3 |
| Sensitivity | 84.6% | 73.5 to 92.4 |
| Specificity | 74.0% | 64.3 to 82.3 |
| Likelihood ratio (+) | 3.3 | 2.3 to 4.6 |
| Likelihood ratio (−) | 0.2 | 0.1 to 0.4 |
| Diagnostic OR | 15.7 | 7.0 to 34.8 |
| Positive predictive value | 67.9% | 56.6 to 77.8 |
| Negative predictive value | 88.1% | 79.2 to 94.1 |