Table IV.

Multivariate analysis of factors influencing in-hospital mortality

Factor	RR (95% CI)	P-value
Invasive treatment	0.31 (0.29–0.33)	< 0.0001
Hypercholesterolaemia	0.73 (0.69–0.77)	< 0.0001
Hypertension	0.73 (0.69–0.78)	< 0.0001
Previous PCI	0.80 (0.73–0.88)	< 0.0001
Previous CABG	0.80 (0.71–0.91)	0.0006
Current smokers	1.02 (0.94–1.10)	0.6776
Female (vs. male)	1.02 (0.97–1.08)	0.4485
Previous MI	1.07 (1.01–1.14)	0.0255
Diabetes	1.09 (1.03–1.15)	0.0021
Time to admission > 12 h	1.09 (1.03–1.16)	0.0030
EF = 35–50%	1.10 (1.01–1.20)	0.0240
ST-T abnormalities on ECG	1.16 (1.07–1.27)	0.0007
Obesity	1.18 (1.10–1.26)	< 0.0001
Other than sinus rhythm on ECG	1.19 (1.12–1.27)	< 0.0001
Age (on each decade)	1.63 (1.59–1.68)	< 0.0001
EF < 35%	2.31 (2.11–2.53)	< 0.0001
Prehospital cardiac arrest	2.37 (2.09–2.69)	< 0.0001
Killip 3 class	3.67 (3.41–3.94)	< 0.0001
IABP	3.89 (3.23–4.69)	< 0.0001
Killip 4 class	13.2 (12.0–14.4)	< 0.0001

EF – ejection fraction, ECG – electrocardiogram, IABP – intra aortic balloon pomp. Other abbreviations as in Table I.