Table 3.

Adjusted odds ratio for ROSC.

	Odds ratio	95% CI	p-value
Age (per year)	0.994	0.991–0.997	<0.001
Male sex	0.782	0.714–0.856	<0.001
Non-Caucasian race	0.976	0.883–1.078	0.628
Weight (>100 kg)	0.709	0.646–0.778	<0.001
Aetiology of arrest Presumed cardiac Respiratory Drug overdose Other	(reference) 1.686 2.816 1.074	1.478–1.922 2.103–3.769 0.849–1.358	<0.001 <0.001 0.554
Received bystander CPR	1.170	1.066–1.285	<0.001
Initial shockable rhythm	1.790	1.620–1.977	<0.001
Received AED shock prior to EMS arrival	1.658	1.396–1.969	<0.001
Received advanced airway placement	0.969	0.874–1.075	0.555
EMS response time (per minute)	0.970	0.962–0.979	<0.001