Table 1.
Baseline characteristics
| Variable | No SHD/IPAS N = 60 | SHD N = 20 | IPAS N = 14 | P value |
|---|---|---|---|---|
| Demographics | ||||
| Age (years), mean ± SD | 44 ± 17 | 47 ± 21 | 47 ± 11 | 0.73 |
| Female gender, n (%) | 36 (60) | 10 (50) | 8 (57) | 0.74 |
| Symptoms | ||||
| (Near) syncope, n (%) | 47 (78) | 14 (70) | 10 (71) | 0.71 |
| Palpitations, n (%) | 40 (67) | 10 (50) | 6 (43) | 0.17 |
| Asymptomatic, n (%) | – | 1 (5) | 1 (7) | 0.15 |
| Co-morbidity | ||||
| Hypertension, n (%) | 6 (10) | 4 (20) | 3 (21) | 0.37 |
| Hypercholesterolemia, n (%) | 8 (13) | 2 (10) | 1 (7) | 0.79 |
| Diabetes mellitus, n (%) | 5 (8) | 1 (5) | – | 0.51 |
| Transient ischemic attack, n (%) | 4 (7) | 1 (5) | – | 0.61 |
| Stroke, n (%) | 2 (3) | 2 (10) | – | 0.11 |
| Epilepsy, n (%) | 2 (3) | – | 2 (14) | 0.11 |
| Renal disease, n (%) | – | 1 (5) | – | 0.16 |
| Prior PCI, n (%) | – | 3 (15) | – | < 0.01 |
| Prior CABG, n (%) | – | 1 (5) | – | 0.16 |
CABG, coronary artery bypass graft; PCI, percutaneous coronary intervention