Table 1.
Selected Baseline Characteristics
| Usual Care | POC‐Troponin | P Value | |
|---|---|---|---|
| n | 296 | 305 | |
| Age, y | 68 (53, 79) | 64 (53, 76) | 0.138 |
| >75 y, n (%) | 98 (33.1) | 80 (26.2) | 0.065 |
| Female, n (%) | 136 (45.9) | 125 (41.0) | 0.220 |
| Vital signs in ambulance | |||
| Estimated weight, kg | 80 (70, 100) | 80 (70, 98) | 0.688 |
| Heart rate, beats per minute | 80 (72, 94) | 82 (70, 98) | 0.466 |
| Systolic blood pressure, mm Hg | 153 (137, 172) | 147 (131, 169) | 0.054 |
| Respiratory rate, breaths per minute | 18 (16, 20) | 18 (16, 20) | 0.589 |
| Past medical history, n (%) | |||
| Myocardial infarction | 82 (27.7) | 96 (31.5) | 0.311 |
| Previous percutaneous intervention | 48 (16.2) | 31 (10.2) | 0.028 |
| Previous coronary artery bypass graft | 23 (7.8) | 29 (9.5) | 0.449 |
| Angina | 40 (13.5) | 41 (13.4) | 0.980 |
| Heart failure | 29 (9.8) | 21 (6.9) | 0.196 |
| Atrial fibrillation | 29 (9.8) | 45 (14.8) | 0.065 |
| Diabetes | 72 (24.3) | 80 (26.2) | 0.591 |
| Hypertension | 181 (61.1) | 177 (58.0) | 0.437 |
| Hypercholesterolemia | 81 (27.4) | 77 (25.2) | 0.555 |
| Family history of CAD | 35 (11.8) | 29 (9.5) | 0.357 |
| Stoke or transient ischemic attack | 35 (11.8) | 31 (10.2) | 0.515 |
| COPD | 35 (11.8) | 39 (12.8) | 0.720 |
| POC‐troponin I, ng/mL, n (%) | |||
| ≤0.01 | — | 196 (64.3) | |
| >0.01 | — | 53 (17.4) | |
| ≤0.03 | — | 219 (71.8) | |
| >0.03 | — | 30 (9.8) | |
| Not done/missing | 56 (18.4) | ||
Values are median (25th–75th percentiles), unless otherwise stated. COPD indicates chronic obstructive pulmonary disease; POC, point‐of‐care.