Diagnostic Test Characteristics of Having a History of No or Low-Impact Trauma for Identifying Cases of Definite Abuse*
| Patient Group | Sensitivity (95% CI) | Specificity (95% CI) | PPV (95% CI) | Negative Predictive Value (95% CI) |
|---|---|---|---|---|
| Normal neurologic status (n = 101) | 1 (0.78–1.0) | 0.59 (0.48–0.70) | 0.30 (0.18–0.45) | 1 (0.93–1.0) |
| Initial abnormal neurologic status (n = 60) | 1 (0.89–1.0) | 0.71 (0.51–0.87) | 0.80 (0.64–0.91) | 1 (0.83–1.0) |
| Persistent abnormal neurologic status (n = 33) | 1 (0.86–1.0) | 1 (0.63–1.0) | 1 (0.86–1.0) | 1 (0.63–1.0) |
| All cases (n = 161) | 1 (0.92–1.0) | 0.62 (0.52–0.71) | 0.53 (0.41–0.63) | 1 (0.95–1.0) |
↵* Two cases of witnessed abuse with history of high-impact trauma were excluded from analysis.