Summary of other key categorical variables and PHCCT attendance (yes/no)
| Variable | Category | PHCCT | Non-PHCCT | ||
| N | % | N | % | ||
| Gender | Male | 565 | 72.8 | 7641 | 56.6 |
| Female | 211 | 27.2 | 5863 | 43.4 | |
| Patient taken to prospective Major Trauma Centre (MTC) | Yes | 595 | 76.7 | 4421 | 32.7 |
| No | 181 | 23.3 | 9083 | 67.3 | |
| Mode of transport to hospital | Land ambulance | 569 | 73.3 | 13 288 | 98.4 |
| Air ambulance | 207 | 26.7 | 216 | 1.6 | |
| Severe head injury | Yes | 194 | 25.0 | 2354 | 17.4 |
| No | 582 | 75.0 | 11 150 | 82.6 | |
| Prehospital intubation | Yes | 212 | 27.3 | 109 | 0.8 |
| No | 564 | 72.7 | 13 395 | 99.2 | |
| Major trauma (Injury Severity Score: ISS >15) | Yes | 444 | 57.2 | 2632 | 19.5 |
| No | 332 | 42.8 | 10 872 | 80.5 | |
| Scottish Index of Multiple Deprivation (SIMD) Quintile | 1 (most deprived) | 164 | 21.1 | 3644 | 27.0 |
| 2 | 128 | 16.5 | 2729 | 20.2 | |
| 3 | 143 | 18.4 | 2153 | 15.9 | |
| 4 | 115 | 14.8 | 1903 | 14.1 | |
| 5 (least deprived) | 102 | 13.1 | 1615 | 12.0 | |
| Unknown | 124 | 16.0 | 1460 | 10.8 | |
PHCCT, prehospital critical care team.