Table 1

 Baseline characteristics by British Cardiac Society category of acute coronary syndrome (ACS)

ACS with unstable angina (n = 268)ACS with myocyte necrosis (n = 530)ACS with clinical MI (n = 1686)p Value
Data are mean (SD) or number (%).
BP, blood pressure; CABG, coronary artery bypass grafting; MI, myocardial infarction; NS, not significant; PCI, percutaneous coronary intervention.
Age (years)69.1 (12.8)71.8 (12.6)69.7 (13.3)0.03
Women89 (33%)241 (46 %)601 (36%)<0.001
Current smoker51 (19%)114 (22%)509 (30%)<0.001
Systolic BP (mm Hg)142.1 (27.2)144.2 (30.5)141.4(30.4)NS
Heart rate (beats/min)79.9 (23.0)87.9 (25.4)83.3 (23.4)<0.001
Medical history
    Acute MI97 (36%)155 (29%)373 (22%)<0.001
    Hypertension133 (50%)233 (44%)696 (41%)NS
    Diabetes mellitus52 (19%)94 (18%)280 (17%)NS
    Hypercholesterolaemia125 (47%)197 (37%)514 (31%)<0.001
    Peripheral vascular disease25 (9%)51 (10%)32 (8%)NS
Same admission
    Angiogram55 (21%)146 (28%)403 (24%)NS
    PCI13 (5%)56 (11%)187 (11%)0.008
    CABG6 (2%)14 (3%)44 (3%)NS
Planned
    Angiogram16 (6%)29 (6%)123 (7%)NS
    PCI/CABG7 (3%)23 (4%)67 (4%)NS
All cause mortality
    30 day4.5%10.4%12.9%<0.001
    6 month8.6%18.7%19.2%<0.001
    Increase 30 day to 6 month4.1%8.3%6.3%<0.001