Baseline characteristics of patients
| All patients | CAD | No CAD | p Value | |
| n=1170 | n=433 (37%) | n=737 (63%) | ||
| Age (years) | <0.001 | |||
| Median | 64 | 72 | 59 | |
| IQR | 51–76 | 59–79 | 49–72 | |
| Male gender, n (%) | 781 (67) | 327 (76) | 454 (62) | <0.001 |
| Risk factors, n (%) | ||||
| Hypertension | 744 (64) | 360 (83) | 384 (52) | <0.001 |
| Hypercholesterolaemia | 523 (45) | 305 (70) | 218 (30) | <0.001 |
| Diabetes | 225 (19) | 130 (30) | 95 (13) | <0.001 |
| Current smoking | 281 (24) | 82 (19) | 199 (27) | 0.002 |
| History of smoking | 410 (35) | 206 (48) | 204 (28) | <0.001 |
| History, n (%) | ||||
| Chronic obstructive pulmonary disease | 121 (10) | 71 (16) | 50 (7) | <0.001 |
| Renal insufficiency | 123 (11) | 92 (21) | 31 (4) | <0.001 |
| Peripheral artery disease | 80 (7) | 59 (14) | 21 (3) | <0.001 |
| Previous stroke | 69 (6) | 34 (8) | 35 (5) | 0.04 |
| Vital status | ||||
| Heart rate (bpm) | ||||
| Median (IQR) | 76 (66–89) | 71 (62–82) | 78 (68–92) | <0.001 |
| Systolic blood pressure (mm Hg) | ||||
| Median (IQR) | 142 (127–160) | 139 (124–157) | 145 (129–161) | <0.001 |
| Diastolic blood pressure (mm Hg) | ||||
| Median (IQR) | 84 (74–93) | 80 (70–89) | 86 (77–96) | <0.001 |
| Body mass index | ||||
| Median (IQR) | 26 (24–30) | 27 (24–30) | 26 (24–29) | 0.08 |
| ECG findings, n (%) | ||||
| Left bundle branch block | 42 (4) | 25 (6) | 17 (2) | 0.003 |
| ST segment elevation | 62 (5) | 19 (4) | 43 (6) | 0.35 |
| ST segment depression | 118 (10) | 51 (12) | 67 (9) | 0.16 |
| T wave inversion | 89 (8) | 46 (11) | 43 (6) | 0.004 |
| No significant ECG abnormalities | 859 (73) | 292 (68) | 567 (77) | <0.001 |
| Glomerular filtration rate, ml/min/1.73 m2 | ||||
| Median (IQR) | 89 (71–107) | 80 (61–99) | 94 (75–109) | <0.001 |
| Adjudicated final diagnosis, n (%) | <0.001 | |||
| Acute myocardial infarction | 184 (16) | 78 (18) | 106 (14) | 0.59 |
| Unstable angina | 164 (14) | 118 (27) | 46 (6) | 0.006 |
| Cardiac symptoms from causes other than CAD | 154 (13) | 42 (10) | 112 (15) | 0.59 |
| Non-cardiac causes | 565 (48) | 149 (34) | 416 (56) | <0.001 |
| Symptoms of unknown origin | 103 (9) | 46 (11) | 57 (8) | 0.85 |
CAD, coronary artery disease.