Table 2

Results of multivariable logistic regression on imputed data set for NTCA survival to hospital admission or survival to receiving hospital discharge outcomes

CovariateSurvival to hospital admissionSurvival to hospital discharge
EffectP valueEffectP value
(Intercept) −0.860 <0.001 −1.20 <0.001
Age0.01050.0900.02040.068
Age2 −0.000144 0.0061 −0.000483 <0.001
Male sex −0.167 0.0025 0.297 0.021
Arrest witnessed 0.752 <0.001 0.79 <0.001
Response time (min) −0.0356 <0.001 −0.108 <0.001
Shockable initial rhythm 1.27 <0.001 2.512 <0.001
Air ambulance 0.676 <0.001 0.527 0.0023
Response time: bystander CPR−0.004450.57 0.04 0.049
Successfully intubated 0.122 0.039 −0.77 <0.001
Epinephrine administered −0.81 <0.001 −2.15 <0.001
  • Models were simplified by sequential elimination of terms and interactions that were not significant for at least one of the two outcomes. Significant covariate estimates are denoted in bold assuming a significance level of 5% and estimates are log odds.

  • CPR, cardiopulmonary resuscitation; NTCA, non-traumatic cardiac arrest.