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Table 4 Cox regression analysis of T-RTS development, patient characteristics and baseline assessments as determinants of mortality within 18 months

From: Triage Revised Trauma Score change between first assessment and arrival at the hospital to predict mortality

  Hazard ratios (95% CI)
  Univariate Multivariate model 1 Multivariate model 2
T-RTS category    
 No change Reference Reference Reference
 Improving 0.8 (0.3–1.9) 0.8 (0.3–1.9) 1.1 (0.5–2.6)
 Deteriorating 3.1 (1.5–6.3) 2.8 (1.4–5.8) 3.6 (1.7–7.6)
 Initially good plus intubated 2.9 (1.3–6.5) 2.5 (1.1–5.7) 3.4 (1.3–9.0)
 Initially poor plus intubated 5.7 (3.6–9.0) 5.2 (3.3–8.3) 7.3 (3.9–13.6)
Age (years) 1.02 (1.01–1.03) 1.02 (1.01–1.03) 1.02 (1.00–1.03)
Sex (male) 1.1 (0.7–1.8) 1.2 (0.8–2.0) 1.3 (0.8–2.3)
Intravenous therapy (yes/no) 1.2 (0.6–2.2)   0.7 (0.3–1.5)
Oxygen (yes/no) 1.1 (0.8–1.7)   1.1 (0.7–1.8)
Physician in attendance at scene (yes/no) 1.8 (1.2–2.8)   0.7 (0.4–1.4)
Time between accident and arrival at hospital (min) 1.00 (0.99–1.01)   0.98 (0.99–1.01)
  1. 95% CI confidence interval. Model 1: includes an indicator variable for change in T-RTS, age and sex. Model 2: like model 1, plus fluid replacement, oxygen, presence of physician at scene of accident and total time elapsed between accident and arrival at hospital. Values printed in bold indicate statistical significance