Table 4.
Comparison of variables by basilar artery plaque location
| None | Anterior | Posterior | Lateral | P | |
|---|---|---|---|---|---|
| Age (yr) | 65±11 | 70±9 | 72±9 | 72±11 | 0.02 |
| Male sex | 13 (44.8) | 7 (53.8) | 18 (54.5) | 9 (42.9) | 0.79 |
| Hypertension | 23 (71.9) | 11 (84.6) | 20 (66.7) | 17 (81.0) | 0.58 |
| Diabetes | 14 (43.8) | 4 (30.8) | 13 (43.3) | 7 (33.3) | 0.73 |
| Hyperlipidemia | 21 (65.6) | 7 (53.8) | 22 (73.3) | 15 (71.4) | 0.44 |
| Smoking | 11 (34.4) | 6 (46.2) | 11 (36.7) | 5 (23.8) | 0.59 |
| Angles of vertebrobasilar arteries | |||||
| BA-VA angle (º) | 23±13 | 32±14 | 38±14 | 31±11 | 0.004 |
| Mid-BA angle (º) | 23±19 | 23±13 | 19±16 | 34±18 | 0.03 |
| Plaque length (mm) | NA | 3.2±1.7 | 2.6±1.1 | 2.5±1.6 | 0.26* |
Values are presented as mean±standard deviation or number (%)
BA, basilar artery; VA, vertebral artery; NA, not available.
*
Plaque length was compared among those with a plaque.