Table 4.

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

Covariate	Survival to hospital admission		Survival to hospital discharge
	Effect	P value	Effect	P value
(Intercept)	−0.970	0.0014	−2.89	<0.001
Arrest witnessed	−0.76	0.035	−0.784	0.26
Response time (min)	−0.072	0.057	−0.00944	0.89
Shockable initial rhythm	0.777	0.22	2.49	0.0030
Air ambulance	0.952	0.012	0.180	0.83

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.

TCA, traumatic cardiac arrest.