Basic clinical data: factors not necessarily apparent at scene of injury
| Intervention (n=169) | Control (n=124) | Difference (95% CI) | |
| Time from leaving scene to hospital (min), median (IQR) | 145* 19 (12 to 25.5) | 102* 16 (8 to 25.3) | 1.37 (−1.13 to 3.87) |
| ISS, median (IQR) | 162* 1 (1 to 9) | 114* 1 (1 to 16) | −2.29 (−4.51 to −0.08) |
| Significant extracranial injury (%; 95% CI) | 162* 3.7% (1.7% to 7.8%) | 114* 4.4% (1.9% to 9.9%) | −0.7% (−5.4% to 4.1%) |
| TBI (%; 95% CI) | 162* 21.6% (15.8% to 28.4%) | 114* 30.7% (22.8% to 39.6%) | −9.1% (−19.7% to 1.5%) |
| % of those with TBI who had neurosurgery (%; 95% CI) | 35* 11.4% (3.7% to 25.3%) | 35* 31.4% (17.8% to 48.1%) | −20.0% (−38.6% to 1.4%) |
| ABC intervention within 6 hours of leaving scene (%; 95% CI) | 162* 13.6% (8.9% to 19.5%) | 113* 17.7% (11.5% to 25.6%) | −4.1% (−12.9% to 4.7%) |
| Transferred for further care (%; 95% CI) | 162* 4.9% (2.5% to 9.4%) | 114* 15.8% (10.2% to 23.6%) | −10.9% (−18.3% to −3.4%) |
| 30-day mortality (%; 95% CI) | 159* 9.4% (5.6% to 14.8%) | 113* 8.8% (4.6% to 15.2%) | 0.6% (−6.3% to 7.5%) |
↵*Number with data available.
ABC, airway, breathing and circulation; ISS, Injury Severity Score; TBI, traumatic brain injury.