Baseline characteristics of patients hospitalised for the first time with AMI in the period 1995–2002, stratified by age, income, and education
| Age 30–64 years (n = 21391) | Age 65–74 years (n = 16169) | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Income | Education | Income | Education | |||||||||||||
| High | Medium | Low | p | Long | Medium | Short | p | High | Medium | Low | p | Long | Medium | Short | p | |
| High, medium, and low income refer to tertiles of income adjusted for age. Short education is <10 years, medium 10–12 years, and long >12 years. *p<0.05 in test for trend between levels of income or education. | ||||||||||||||||
| Number | 7118 | 7180 | 7093 | 2886 | 9018 | 9487 | * | 5393 | 5400 | 5376 | 1484 | 4719 | 9966 | * | ||
| % | 33.3 | 33.6 | 33.2 | 13.5 | 42.2 | 44.4 | 33.4 | 33.4 | 33.3 | 9.2 | 29.2 | 61.6 | ||||
| % Male | 83.4 | 77.2 | 68.2 | * | 82.3 | 84.0 | 67.2 | * | 72.5 | 63.9 | 54.6 | * | 78.0 | 77.2 | 55.1 | * |
| Mean age in years (SD) | 54.3(7.1) | 54.4(7.3) | 54.6(7.3) | * | 53.9(6.8) | 53.8(7.3) | 55.2(7.3) | * | 69.5(2.9) | 69.7(2.8) | 69.9(2.8) | * | 69.6(2.8) | 69.4(2.9) | 69.9(2.8) | * |
| Living alone (%) | 19.5 | 17.9 | 36.4 | * | 22.0 | 20.6 | 29.0 | * | 30.0 | 37.9 | 28.4 | 25.6 | 26.2 | 35.9 | * | |
| Ontario prediction rule | ||||||||||||||||
| Congestive heart failure (%) | 3.4 | 3.5 | 5.7 | * | 4.0 | 3.8 | 4.6 | * | 8.5 | 10.3 | 11.2 | * | 8.9 | 9.5 | 10.4 | * |
| Cardiac arrhythmias (%) | 3.5 | 3.8 | 4.3 | * | 3.5 | 3.9 | 3.9 | 8.2 | 7.6 | 8.8 | 8.6 | 8.2 | 8.1 | |||
| Cerebrovascular disease (%) | 1.3 | 1.6 | 2.5 | * | 1.6 | 1.6 | 2.1 | * | 3.6 | 4.3 | 4.7 | * | 3.0 | 4.0 | 4.4 | * |
| Pulmonary oedema (%) | 0.2 | 0.3 | 0.6 | * | 0.1 | 0.3 | 0.5 | * | 0.9 | 0.9 | 1.1 | 1.1 | 1.1 | 0.9 | ||
| Diabetes with complication (%) | 1.9 | 2.7 | 5.2 | * | 2.3 | 2.8 | 4.0 | * | 3.1 | 4.2 | 4.7 | * | 2.8 | 3.9 | 4.3 | * |
| Chronic renal failure (%) | 0.3 | 0.5 | 1.0 | * | 0.4 | 0.6 | 0.7 | * | 0.9 | 0.9 | 1.0 | 1.3 | 1.1 | 0.8 | * | |
| Acute renal failure (%) | 0.3 | 0.3 | 1.0 | * | 0.3 | 0.4 | 0.7 | * | 0.6 | 0.8 | 0.8 | 0.5 | 0.9 | 0.7 | ||
| Malignancy (%) | 0.6 | 1.1 | 1.2 | * | 0.9 | 0.9 | 1.1 | 2.9 | 2.7 | 2.8 | 3.3 | 3.1 | 2.6 | * | ||
| Shock (%) | 0.4 | 0.4 | 0.9 | * | 0.4 | 0.5 | 0.7 | 1.1 | 1.3 | 1.3 | 0.7 | 1.4 | 1.2 | |||
| Mean observation period in years (SD) | 4.9 (2.3) | 4.9 (2.3) | 4.9 (2.3) | 4.7 (2.3) | 4.9 (2.4) | 5.1 (2.3) | * | 5.0 (2.4) | 5.1 (2.4) | 5.1 (2.4) | 4.8 (2.4) | 4.9 (2.4) | 5.2 (2.4) | * | ||
| Mortality | ||||||||||||||||
| 0–30 days (%) | 5.1 | 6.5 | 9.5 | * | 5.0 | 6.3 | 8.4 | * | 13.5 | 16.1 | 18.0 | * | 12.7 | 14.6 | 17.0 | * |
| 30 days–end of observation period (%) | 7.2 | 8.5 | 14.4 | * | 6.6 | 8.3 | 12.5 | * | 24.3 | 28.4 | 32.6 | * | 23.3 | 26.4 | 30.0 | * |