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Table 2 Cox regression analyses of parameters potentially associated with risk of death within 30-days of trauma

From: Traumatic brain injury—the effects of patient age on treatment intensity and mortality

  Univariate Multivariate
  OR 95% CI p-value OR 95% CI p-value
Age 1.03 1.02 to 1.04  < 0.001 1.00 1.00 to 1.00  < 0.001
Sex
 Female   
 Male 0.85 0.62 to 1.19 0.35 1.02 0.99 to 1.05 0.20
Preinjury ASA
 Healthy   
 Moderate disease 1.58 1.02 to 2.43 0.038 0.99 0.96 to 1.03 0.75
 Severe disease 3.57 2.45 to 5.27  < 0.001 1.06 1.02 to 1.10 0.004
 Life-threatening 3.82 0.84 to 12.8 0.045 1.09 0.95 to 1.25 0.20
Management intensity
 0   
 1 8.82 5.93 to 13.3  < 0.001 1.06 1.02 to 1.10 0.005
 2 2.79 1.71 to 4.50  < 0.001 0.91 0.87 to 0.95  < 0.001
 3 4.60 2.74 to 7.62  < 0.001 0.82 0.77 to 0.87  < 0.001
TBI severity
 Mild   
 Moderate 3.77 1.57 to 11.2 0.007 1.03 0.99 to 1.06 0.11
 Severe 30.4 13.7 to 86.4  < 0.001 1.23 1.17 to 1.28  < 0.001
Rotterdam CT score
 1,2   
 3 2.00 1.17 to 3.53 0.013 1.00 0.97 to 1.03 0.85
 4 9.16 5.05 to 17.1  < 0.001 1.19 1.13 to 1.26  < 0.001
 5 28.0 15.5 to 52.5  < 0.001 1.48 1.39 to 1.57  < 0.001
 6 111 50.1 to 268  < 0.001 1.86 1.71 to 2.02  < 0.001
  1. OR Odds ratio, CI Confidence interval, ASA American Society of Anesthesiologists