Table 2.
Baseline Characteristics by Use of Angiography and Countries
| United States | South Korea | |||
|---|---|---|---|---|
| Angiography | No Angiography | Angiography | No Angiography | |
| Proportion of patients, % (n) | 79.6 (106 539) | 20.4 (27 202) | 91.3 (7262) | 8.7 (695) |
| Demographics | ||||
| Median age, y (1Q, 3Q) | 64 (54, 74) | 81 (70, 88) | 66 (56, 74) | 76 (68, 82) |
| Female sex, % | 35.3 | 51.1 | 31.7 | 47.4 |
| Median BMI, kg/m2 (1Q, 3Q) | 28.8 (25.3, 33.2) | 26.1 (22.5, 30.6) | 23.9 (22.0, 26.0) | 22.3 (20.1, 24.4) |
| Risk factors (%) | ||||
| Current smoker | 33.9 | 15.5 | 41.8 | 31.1 |
| HTN | 74.3 | 84.1 | 54.7 | 58.9 |
| DM | 33.1 | 43.0 | 31.1 | 37.2 |
| Dyslipidemia | 63.3 | 59.0 | 14.2 (18.8) | 11.8 (16.2) |
| Prior CVD/procedures, % | ||||
| Prior MI | 26.5 | 38.0 | 6.8 | 14.8 |
| Prior CHF | 11.4 | 37.5 | 2.5 | 11.8 |
| Prior PCI | 26.3 | 21.6 | 7.2 | 7.3 |
| Prior CABG | 17.5 | 25.1 | 1.1 | 3.6 |
| Cerebrovascular disease | 11.9 | 26.7 | 8.4 | 15.9 |
| PAD | 10.6 | 19.5 | 1.0 | 1.7 |
| Initial vital signs | ||||
| Median SBP, mm Hg (1Q, 3Q) | 147 (128, 168) | 137 (115, 160) | 130 (111, 150) | 130 (110, 150) |
| Median heart rate, bpm (1Q, 3Q) | 81 (70, 96) | 90 (76, 107) | 76 (67, 88) | 87 (73, 105) |
| ECG at presentation, % | ||||
| ST depression or transient elevation | 26.9 | 24.2 | 21.1 | 20.3 |
| T‐wave changes | 14.7 | 11.8 | 16.1 | 12.9 |
| No ST or T‐wave changes | 57.7 | 63.0 | 52.9 | 43.6 |
| Symptom/signs of CHF | 14.6 | 42.0 | 24.6 | 60.2 |
| Cardiogenic shock | 1.4 | 3.3 | 2.5 | 5.5 |
| Laboratory findings | ||||
| Median Cr, mg/dL (1Q, 3Q) | 1.0 (0.9, 1.3) | 1.4 (1.0, 2.0) | 1.0 (0.8, 1.2) | 1.2 (0.9, 1.8) |
| In‐hospital mortality, % | 2.1 | 11.3 | 3.2 | 18.1 |
Abbreviations: 1Q, first quartile; 3Q, third quartile; BMI, body mass index; CABG, coronary artery bypass grafting; CHF, congestive heart failure; Cr, creatinine; CVD, cardiovascular disease; DM, diabetes mellitus; ECG, electrocardiogram; HTN, hypertension; MI, myocardial infarction; PAD, peripheral arterial disease; PCI, percutaneous coronary intervention; SBP, systolic blood pressure.