| Group | Contralateral asymptomatic | Truly asymptomatic | p Value* |
| No of patients | 20 | 20 | |
| Age (y) (median (range)) | 72 (53–84) | 76 (62–83) | |
| Male (%) | 11 (55) | 14 (70) | 0.5145 |
| Per cent luminal stenosis (mean (SD)) | 46 (6) | 63 (11) | <0.0001 |
| Normalised wall index (mean (SD)) | 0.789 (0.09) | 0.827 (0.07) | 0.1587 |
| Hypertension (%) | 18 (90) | 15 (75) | 0.4075 |
| Diabetes (%) | 6 (30) | 5 (25) | 1.0000 |
| PTCA/CABG (%) | 5 (25) | 3 (15) | 0.6948 |
| Peripheral vascular operations (%) | 3 (15) | 2 (10) | 1.0000 |
| Current or ex-smoker (%) | 18 (90) | 12 (60) | 0.0648 |
| Hypercholesterolaemia (%) | 15 (75) | 9 (45) | 0.1053 |
| Cholesterol (mmol/l) (mean (SD)) | 4.3 (1.6) | 4.5 (2.1) | 0.7368 |
| HDL cholesterol (mmol/l) (mean (SD)) | 1.2 (0.45) | 1.3 (0.34) | 0.3707 |
| Statin use (%) | 19 (95) | 16 (80) | 0.3416 |
| Antiplatelet agent (%) | 18 (90) | 15 (75) | 0.4075 |
CABG, coronary artery bypass graft; PTCA, percutaneous coronary angioplasty.
*p Values are presented to provide an indication as to the degree of difference between the two groups. p values greater than 0.05 should not be interpreted as evidence of “no difference”.