Multivariate logistic regression statistical modelling variables
| NEW admissions | RECENT patients (≤1 hour) | EXIST patients (>1 hour) | FACILITY factors |
| Age | Age ≥65 | Age ≥65 | Day/night shift |
| Prehospital GCS score | Admission GCS <8 | Admission GCS <8 | Weekday/weekend |
| Prehospital SI (HR/SBP) | Admission SI ≥0.9 | Admission SI ≥0.9 | TRU occupancy ≥12 |
| Prehospital HR | # of RECENT patients | # of EXIST patients | TRU occupancy ≥14 |
| Prehospital SBP | TRU occupancy ≥16 |
EXIST, existing patients; GCS, Glasgow Coma Scale score; HR, heart rate; NEW, new trauma admissions; RECENT, recent admissions; SBP, systolic blood pressure; SI, Shock Index; TRU, Trauma Resuscitation Unit.