Baseline characteristics of 5983 myocardial infarction survivors according to age group
| Age group (years) | |||||
|---|---|---|---|---|---|
| All (n=5983) | <56 (n=1120) | 56–65 (n=1531) | 66–75 (n=2001) | ≥76 (n=1331) | |
| *p<0.001, **p<0.0001 for no difference between the four age groups. Continuous variables are medians with 5th and 95th centiles. Discrete variables were compared by χ2 tests and continuous variables by rank sum tests. | |||||
| Men* (%) | 69 | 84 | 75 | 68 | 52 |
| Wall motion index** | 1.4 (0.8–2.0) | 1.6 (0.9–2.0) | 1.5 (0.8–2.0) | 1.4 (0.7–2.0) | 1.3 (0.7–2.0) |
| Congestive heart failure* (%) | 49 | 24 | 42 | 56 | 69 |
| Smokers* (%) | 53 | 76 | 64 | 47 | 29 |
| Hypertension* (%) | 22 | 16 | 22 | 26 | 23 |
| Diabetes* (%) | 10 | 7 | 9 | 12 | 13 |
| Previous myocardial infarction* (%) | 23 | 15 | 22 | 27 | 25 |
| Body mass index** | 25 (20–33) | 26 (20–34) | 26 (20–33) | 25 (20–32) | 24 (19–32) |
| Thrombolysis* (%) | 43 | 54 | 52 | 42 | 23 |
| Ventricular fibrillation* (%) | 5 | 6 | 6 | 5 | 3 |
| Atrial fibrillation* (%) | 19 | 6 | 13 | 23 | 32 |