Table 1

 Baseline parameters of patients admitted for STEMI or NSTEMI

VariableTotal (n = 2320)NSTEMI (n = 398)STEMI (n = 1922)p Value
Data are mean (SD), median (25, 75 centiles), or number (%).
BMI, body mass index; CABG, coronary bypass grafting; CHF, congestive heart failure; MI, myocardial infarction; NS, not significant; NSTEMI, non-ST segment elevation myocardial infarction; PCI, percutaneous coronary intervention; PVD, peripheral vascular disease; STEMI, ST segment elevation myocardial infarction.
Age (years)0.001
    Mean (SD)65 (14)68 (14)65 (15)
    Median (25th, 75th centiles)68 (54, 77)71 (57, 77)67 (53, 76)
Sex (women)628 (27%)107 (27%)521 (27%)NS
BMI ⩾30362 (17.5%)78 (23%)284 (16.5%)0.006
Risk factors:
    Diabetes mellitus487 (21%)91 (23%)396 (21%)NS
    Past smoking579 (25%)119 (30%)460 (24%)0.013
    Current smoking754 (33%)94 (24%)660 (34%)0.001
    Hyperlipidaemia944 (41%)187 (47.5%)757 (40%)0.005
    Hypertension1076 (46%)219 (55%)857 (45%)0.001
History
    Previous MI411 (18%)111(28%)300 (16%)0.001
    CHF149 (6%)38 (9.5%)111 (6%)0.005
    Stroke111 (5%)27 (7%)84 (4%)0.041
    CABG98 (4%)41 (10%)57 (3%)0.001
    PCI216 (9%)63 (16%)153 (8%)0.001
    PVD215 (9%)49 (12%)166 (9%)0.022
    Renal insufficiency108 (5%)24 (6%)84 (4%)NS
Current episode of MI
Time to admission (hours)5.25 (2.75, 14.1)6.5 (2.92, 17.1)5.0 (2.75, 14.0)0.026
    Anterior MI831 (36%)0750 (39%)
    Killip class on admissionNS
        I1802 (78%)312 (78%)1490 (78%)
        II321 (14%)54 (14%)267 (14%)
        III131 (6%)25 (6%)106 (5.5%)
        IV62 (3%)7 (2%)55 (3%)
Admission heart rate (beats/min)79 (20)81 (22)79 (19)0.02
Initial systolic blood pressure (mm Hg)134 (27)140 (27)132 (27)0.001