The sensitivity and specificity of each clinical measure of sport concussion individually and as a battery using predictive discriminant analysis and clinical interpretation guidelines
| PDA (N=80) | Clinical interpretation guidelines (n=40) Sensitivity (%) | ||||||
|---|---|---|---|---|---|---|---|
| Clinical measure | Sensitivity (%) | Specificity (%) | Overall classification Rate (%) | I score (%) | Positive likelihood ratio | Negative likelihood ratio | |
| Symptoms (HIS-r) | 77.5 | 100.0 | 88.8 | 60.0‡ | 32.0 | 0.21 | 97.5 |
| ImPACT | 55.0 | 97.5 | 76.3 | 10.0‡ | 22.0 | 0.46 | 95.0 |
| ImPACT without TSS | 52.5 | 52.5 | 52.5 | 5.0 | 1.11 | 0.90 | 75.5 |
| SOT | 72.5 | 85.0 | 78.8 | 45.0‡ | 4.83 | 0.32 | 55.0 |
| Test battery | 80.0 | 97.5 | 88.8 | 55.0‡ | 0.86 | 2.25 | 100.0 |
‡p≤0.05.
ImPACT, Immediate Postconcussion Assessment and Cognitive Test; PDA, predictive discriminant analysis; TSS, Total Symptom Score.