Table 1.
Characteristics of Patients with Acute Myocardial Infarction
| Patient Characteristic | All Adult Patients ≥18 Years-Old (N=543,794) | Older Patients ≥65 Years-Old (N=267,763) | Younger Patients 18–64 Years-Old (N=276,031) | P Value for Difference between Older and Younger Patients |
|---|---|---|---|---|
| Mean age (SD) | 64.8 (13.8) | 76.3 (8.1) | 53.6 (7.8) | --- |
| Mean heart rate at presentation in BPM (SD) | 84.5 (24.3) | 85.1 (25.1) | 83.8 (23.4) | <0.001 |
| Mean systolic blood pressure at presentation in mm Hg (SD) | 145.3 (35.0) | 144.5 (35.3) | 146.2 (34.7) | <0.001 |
| Mean serum creatinine at presentation in mg/dL (SD) | 1.3 (1.2) | 1.4 (1.1) | 1.2 (1.2) | <0.001 |
| Troponin ratio at presentation (SD) | 70.7 (926.8) | 66.0 (853.1) | 75.2 (993.4) | <0.001 |
| ST-elevation on ECG at presentation (%) | 39.3 | 31.7 | 46.7 | <0.001 |
| Acute heart failure at presentation (%) | 13.4 | 19.1 | 7.8 | <0.001 |
| Cardiogenic shock at presentation (%) | 4.2 | 4.5 | 3.9 | <0.001 |
| Cardiac arrest at presentation (%) | 3.8 | 3.2 | 4.4 | <0.001 |