Comparison of baseline characteristics of patients with acute myocardial infarction in 1992 in Nottingham enrolled into a clinical trial (group A), given standard thrombolysis (group B), or deemed ineligible for lytic treatment (group C)
| Group A (n = 140) | Group B (n = 329) | Group C (n = 431) | p value | |
|---|---|---|---|---|
| Mean (SD) age (years) | 61.5 (11.0) | 64.9 (11.0) | 70.1 (11.3) | < 0.001 |
| Male | 96 (68.6) | 220 (66.9) | 245 (56.8) | 0.005 |
| Previous myocardial infarction | 18 (12.9) | 54 (16.4) | 109 (25.3) | 0.001 |
| Previous coronary revascularisation | 3 (2.1) | 2 (0.6) | 7 (1.6) | – |
| Killip class 1 | 85 (60.7) | 202 (61.4) | 220 (51.0) | 0.009 |
| Killip class 2 | 45 (32.1) | 109 (33.1) | 138 (32.0) | 0.946 |
| Killip class 3/4 | 9 (6.4) | 18 (5.5) | 70 (16.2) | < 0.001 |
| Q wave infarction | 125 (89.3) | 265 (80.5) | 255 (59.2) | < 0.01 |
| Anterior infarct | 63 (45.0) | 131 (39.8) | 192 (44.5) | 0.367 |
| Management on a coronary care unit | 140 (100) | 329 (100) | 246 (57.0) | < 0.001 |
| Initial management by cardiologist | 38 (27.1) | 70 (21.3) | 120 (27.8) | 0.103 |
| Inhospital mortality | 12 (8.6) | 43 (13.1) | 150 (34.8) | < 0.001 |
Values are numbers (%).