Table 1. Baseline characteristics of the patients (n=198).
PCI, percutaneous coronary intervention; CABG, coronary artery bypass grafting; COPD, chronic obstructive pulmonary disease.
| Characteristic | Total (n=198) | Positive MPI (n=19) | Negative MPI (n=179) | P value |
|---|---|---|---|---|
| Troponin T (ng/l) | 6.2 (3.0–10.0) | 11.1 (5.2–14.9) | 5.4 (3.0–9.2) | 0.007 |
| Troponin T <3 ng/l (n) | 53 (27%) | 4 (21%) | 49 (27%) | 0.79 |
| Troponin T ≥14 ng/l (n) | 27 (14%) | 7 (37%) | 20 (11%) | 0.002 |
| Demographics | ||||
| Female | 100 (51%) | 3 (16%) | 97 (54%) | 0.001 |
| Age (years) | 60±11 | 63±12 | 59±11 | 0.12 |
| Risk factors | ||||
| BMI (kg/m2) | 27±4 | 28±3 | 27±4 | 0.13 |
| Hypertension (n) | 73 (37%) | 11 (58%) | 62 (35%) | 0.052 |
| Diabetes mellitus (n) | 25 (13%) | 4 (21%) | 22 (12%) | 0.29 |
| Current smoking (n) | 55 (28%) | 4 (21%) | 51 (29%) | 0.60 |
| Systolic BP (mmHg) | 127±22 | 128±26 | 127±21 | 0.78 |
| Diastolic BP (mmHg) | 85±16 | 84±15 | 86±16 | 0.69 |
| eGFR (ml/min) | 97 (81–119) | 97 (76–142) | 99 (82–121) | 0.69 |
| LVEF | 60 (54–69) | 58 (51–64) | 61 (55–69) | 0.047 |
| Pre-test probability (%) | 60 (38–70) | 60 (60–80) | 50 (30–60) | 0.008 |
| Previous CAD (n) | ||||
| History of CAD | 77 (39%) | 16 (84%) | 61 (34%) | <0.001 |
| Documented MI | 43 (22%) | 10 (53%) | 33 (19%) | 0.001 |
| Positive angiography | 68 (34%) | 16 (84%) | 52 (30%) | <0.001 |
| History of PCI | 55 (30%) | 12 (63%) | 43 (24%) | <0.001 |
| History of CABG | 20 (10%) | 5 (26%) | 15 (9%) | 0.031 |
| History of COPD/asthma | 25 (13%) | 1 (5%) | 24 (13%) | 0.48 |
| Medication (n) | ||||
| Platelet aggregation inhibitor | 118 (60%) | 17 (89%) | 101 (57%) | 0.006 |
| Lipid-lowering drug | 111 (56%) | 18 (95%) | 93 (52%) | <0.001 |
| β-Blocker | 92 (47%) | 14 (74%) | 78 (44%) | 0.013 |
| Diuretics | 39 (20%) | 8 (42%) | 31 (17%) | 0.010 |