Table 2.

Factors associated with in-hospital mortality in patients aged ≥80 years.

	Unadjusted			Adjusted
	OR	95% CI	P	OR	95% CI	P
Male sex	0.77	0.66–0.89	0.0005	1.23	0.91–1.66	0.18
STEMI	1.51	1.20–1.91	0.0004	1.81	1.20–2.72	0.005
Killip classification
1	1.00			1.00
2–4	6.83	5.59–8.34	<0.0001	4.99	3.63–6.85	<0.0001
Coronary risk factors
Hypertension	0.99	0.83–1.18	0.91	1.08	0.78–1.50	0.65
Diabetes mellitus	1.01	0.85–1.21	0.89	1.03	0.75–1.42	0.84
Dyslipidemia	0.56	0.47–0.67	<0.0001	0.52	0.37–0.74	0.0002
Active smoking	0.75	0.58–0.97	0.026	0.94	0.60–1.47	0.78
Transportation
Ambulance	1.60	1.26–2.04	0.0001	1.73	1.00–3.01	0.052
Self	1.00			1.00
In-hospital onset	1.65	1.04–2.63	0.033	2.17	0.92–5.07	0.075
Anterior MI	1.71	1.43–2.06	<0.0001	1.68	1.25–2.26	0.0006
No emergency PCI	4.71	3.96–5.60	<0.0001	2.49	1.62–3.82	<0.0001

MI, myocardial infarction; PCI, percutaneous coronary intervention; STEMI, ST-elevation myocardial infarction.