Table 1. Baseline characteristics.
| Cohort 1 (n=50), 2nd generation scanner, HR ≥65 bpm | Cohort 2 (n=50), 1st generation scanner, HR ≥65 bpm | Cohort 3 (n=50), 2nd generation scanner, HR <65 bpm | Cohort 4 (n=50), 1st generation scanner, HR <65 bpm | P value | |
|---|---|---|---|---|---|
| Mean age ± SD | 58.1±1.8 | 58.3±1.8 | 60.5±1.6 | 60.5±1.6 | 0.61 |
| Male | 20 (40%) | 22 (44%) | 25 (50%) | 25 (50%) | 0.57 |
| BMI ± SD | 28.5±1.1 | 29.6±1.0 | 28.3±0.8 | 28.6±1.0 | 0.8 |
| Hypertension | 29 (58%) | 22 (44%) | 30 (60%) | 27 (54%) | 0.34 |
| Hypercholesterolemia | 28 (56%) | 20 (40%) | 22 (44%) | 30 (60%) | 0.31 |
| Diabetes mellitus | 13 (26%) | 5 (10%) | 7 (14%) | 12 (24%) | 0.27 |
| Smoking | 22 (44%) | 12 (24%) | 19 (38%) | 16 (32%) | 0.31 |
| Family history of ischaemic heart disease | 33 (66%) | 14 (28%) | 25 (50%) | 24 (48%) | 0.004 |
| Coronary stent | 1 (2%) | 0 (0%) | 1 (2%) | 0 (0%) | 0.57 |
| Previous coronary artery bypass surgery | 0 (0%) | 0 (0%) | 2 (4%) | 0 (0%) | 0.11 |
| Oral metoprolol | 32 (64%) | 40 (80%) | 22 (44%) | 21 (42%) | 0.04 |
| Intravenous metoprolol | 5 (10%) | 15 (30%) | 1 (2%) | 2 (4%) | <0.001 |
| Oral Ivabradine | 11 (22%) | 10 (20%) | 4 (8%) | 3 (6%) | 0.046 |
| Number of segments with >50% stenosis | 0.9±1.5 | 0.5±1.1 | 0.8±1.2 | 0.7±1.0 | 0.452 |