Table 3.

Cox survival model for out-of-hospital survival and overall survival.

	Out-of-hospital survival		Overall survival
	HR	95% CI	HR	95% CI
Female (ref: male)	1.059	0.964–1.164	1.046	0.974–1.124
Age (yrs) (ref: <40)
40–59	1.886	0.774–4.596	1.613	0.883–2.948
60–75	4.720	1.955–11.395	3.697	2.038–6.706
76–90	11.068	4.589–26.694	8.249	4.552–14.950
>90	21.413	8.812–52.030	13.552	7.431–24.716
Comorbidity
Atrial fibrillation	1.204	1.077–1.345	1.115	1.023–1.215
Anemia	1.165	1.026–1.322	0.948	0.855–1.052
Diabetes mellitus	1.201	1.082–1.333	1.011	0.931–1.098
Chronic kidney disease	1.393	1.230–1.576	1.228	1.115–1.353
Heart failure	2.190	1.984–2.418	2.002	1.856–2.160
Rehab (ref: no)	0.748	0.700–0.801	0.554	0.516–0.595
Live in urban area	0.966	0.879–1.061	0.866	0.806–0.931

Abbreviation: CI, confidence interval; HR, hazard ratio.

If a CI does not contain 1, then the HR is significant.