Age <65 | 2280 (52%) | 2439 (41%) | <0.0001 | 4719 (46%) |
Women | 1239 (28%) | 2090 (35%) | <0.0001 | 3329 (32%) |
Risk factors
| | | | |
BMI (kg/m2) | | | | |
Not recorded | 472 (11%) | 941 (16%) | | 1413 (14%) |
Normal (<25) | 1294 (30%) | 1502 (25%) | | 2796 (27%) |
Overweight (25–30) | 1807 (41%) | 2322 (39%) | | 4129 (40%) |
Obese (>30) | 788 (18%) | 1127 (19%) | 0.0005* | 1915 (19%) |
Diabetes mellitus | 969 (22%) | 1470 (25%) | 0.001 | 2439 (24%) |
Hypertension | 2215 (51%) | 3710 (63%) | <0.0001 | 5925 (58%) |
Hyperlipidaemia | 1859 (43%) | 2997 (51%) | <0.0001 | 4856 (47%) |
Smoking | | | | |
Not recorded | 423 (10%) | 552 (9%) | | 975 (10%) |
Non-smoker† | 2252 (52%) | 3933 (67%) | | 6185 (60%) |
Current smoker | 1686 (39%) | 1407 (24%) | <0.0001† | 3093 (30%) |
Number of risk factors‡ § | | | | |
0 | 580 (13%) | 699 (12%) | | 1279 (12%) |
1 | 1644 (38%) | 1980 (34%) | | 3624 (35%) |
2 | 1471 (34%) | 2177 (37%) | | 3648 (36%) |
⩾3 | 666 (15%) | 1036 (18%) | <0.0001 | 1702 (17%) |
Prior diseases and medication before admission
| | | |
MI | 962 (22%) | 2142 (36%) | <0.0001 | 3104 (30%) |
Chronic angina | 921 (21%) | 2193 (37%) | <0.0001 | 3114 (30%) |
Revascularisation | 414 (9%) | 1308 (22%) | <0.0001 | 1722 (17%) |
Aspirin | 1320 (30%) | 2978 (51%) | <0.0001 | 4298 (42%) |
β Blocker | 1089 (25%) | 2292 (39%) | <0.0001 | 3381 (33%) |
Statin | 656 (15%) | 1424 (24%) | <0.0001 | 2080 (20%) |