Demographics and clinical characteristics of trauma patients
| % (n) | Mean | Range | SD | |
| Age (years) | 40.8 | 18–91 | 17.6 | |
| Gender (male) | 73.3% (210) | |||
| GCS | 11.7 | 3–15 | 5.1 | |
| LOS (days) | 7.8 | 1–56 | 8.6 | |
| ISS | 14.8 | 1–75 | 11.9 | |
| Total blunt trauma | 91.6% (264) | |||
| Total penetrating trauma | 8.3% (24) | |||
| Mortality | 7.64% (22) | |||
| Total dispatch to scene time (min) | 19 | 0–207 | 12 | |
| Total scene time (min) | 43 | 0–61 | 29 | |
| Total transport to hospital time (min) | 58 | 1–180 | 40 |
*There was a strong positive linear correlation between HEMS on-scene time and mortality (R=0.962, p=0.038) (table 2 and figure 1). Additionally, a trend of higher mortality rates was also seen with longer dispatch times, however was not found to be statistically significant (table 3 and figure 2). Trauma patients with on-scene time lasting between 0 and 10 min had a lower mortality rate (3.9%) than patients with longer on-scene times. Patients with on-scene times lasting 31–59 min (9.8%) had the highest mortality. Overall, trauma patients with dispatch and on-scene times >10 min had higher mortality.
GCS, Glasgow Coma Scale; ISS, Injury Severity Score; LOS, hospital length of stay.