Table 3.

HR derived from Cox regression

Variable	HR	5% CI	95% CI	P value
Cohort≥75 years	1.98	1.51	2.60	<0.001
Being in nursing home	1.42	1.07	1.89	0.014
Respiratory rate	1.02	1.01	1.04	<0.001
Systolic blood pressure	0.99	0.98	0.99	0.017
Lactate	1.25	1.20	1.30	<0.001
Non-invasive mechanical ventilation	1.83	1.26	2.65	0.001
Mechanical ventilation	2.53	1.30	4.92	0.006
Cardioversion	2.21	1.22	4.03	0.009
Defibrillation	2.39	1.23	4.64	0.010
Acute heart failure	2.32	1.63	3.31	<0.001
Age-Charlson comorbidity index	1.13	1.09	1.18	<0.001