Analysis of maximum likelihood estimates
Parameter	df	Parameter estimate	SE	χ2	Pr>χ2	HR	95% CI
After hour	1	0.07764	0.19810	0.1536	0.6951	1.08	0.73 to 1.59
Age	1	0.72647	0.21061	11.8978	0.0006	2.07	1.37 to 3.12
Sex	1	−0.49431	0.20938	5.5735	0.0182	0.61	0.41 to 0.92
COPD	1	−0.40181	0.34744	1.3375	0.2475	0.67	0.34 to 1.32
CEVD	1	0.61525	0.31582	3.7951	0.0514	1.85	1.00 to 3.44
Creat	1	1.32714	0.31433	17.8261	<0.0001	3.77	2.04 to 6.98
Diabetes	1	0.81857	0.21788	14.1147	0.0002	2.27	1.48 to 3.48
Dialysis	1	−0.49067	0.61541	0.6357	0.4253	0.61	0.18 to 2.05
HTN	1	−0.50147	0.21114	5.6409	0.0175	0.61	0.40 to 0.92
Lipid	1	−0.67676	0.22209	9.2852	0.0023	0.51	0.33 to 0.79
Liver/GI	1	0.28563	0.49074	0.3388	0.5605	1.33	0.51 to 3.48
Malignancy	1	0.43663	0.44218	0.9750	0.3234	1.55	0.65 to 3.68
Old MI	1	0.05295	0.28561	0.0344	0.8529	1.05	0.60 to 1.85
Lytic	1	−0.10150	0.59082	0.0295	0.8636	0.90	0.28 to 2.89
PVD	1	0.82531	0.31353	6.9289	0.0085	2.28	1.24 to 4.22
Ef 35	1	−0.58321	0.24534	5.6509	0.0174	0.56	0.35 to 0.90
Ef 20	1	0.08877	0.33432	0.0705	0.7906	1.09	0.57 to 2.10
Ef under20	1	0.37509	1.05195	0.1271	0.7214	1.46	0.19 to 11.44
d1	1	0.78256	0.21761	12.9322	0.0003	2.19	1.43 to 3.35
d2	1	1.44161	0.32632	19.5168	<0.0001	4.23	2.23 to 8.01

COPD – chronic pulmonary disease

CEVD – cerebrovascular disease

HTN – hypertension

MI – myocardial infarction

Lytic – thrombolytic therapy

PVD – peripheral vascular disease

Ef – Ejection Fraction