Cohort demographics and risk-factor differences between main study groupsa
| Asymptomatic (n = 52) | Symptomatic (n = 20) | P Value | |
|---|---|---|---|
| Demographic | |||
| Age (yr) | 74.1 ± 9.8 | 74.2 ± 11.6 | .9786 |
| Male | 52% (27) | 70% (14) | .1653 |
| CT | |||
| Stenosis | 59.0 ± 3.4% | 56.6 ± 6.1% | .1780 |
| Cardiovascular risk factors | |||
| Smoking history | 62% (32) | 45% (9) | .2043 |
| Hypertension | 90% (47) | 80% (16) | .2327 |
| Hyperlipidemia | 73% (38) | 65% (13) | .4994 |
| Diabetes | 25% (13) | 20% (4) | .7640 |
| Coronary artery disease | 54% (28) | 35% (7) | .1518 |
| Atrial fibrillation | 23% (12) | 40% (8) | .1518 |
| CTA imaging markers | |||
| Max hard-plaque thickness (mm) | 2.69 ± 1.04 | 1.19 ± 0.92 | <.0001 |
| Max soft-plaque thickness (mm) | 1.41 ± 0.97 | 3.45 ± 1.54 | <.0001 |
| Ratio soft-/hard-plaque thickness | 0.62 ± .57 | 2.73 ± 1.95 | <.0001 |
Note:—Max indicates maximum.
↵a Mean values are shown with number of subjects shown in parentheses and SDs shown after ± signs.