Table 1. Abnormalities identified by screening MR scans.
| Items | All patients (n = 59) | Group 2 (n = 24) | Group 3 (n = 35) | P value |
|---|---|---|---|---|
| Age, ys | 16-74, median 41 | 21-66(median 40.9) | 17-74 (median 41) | 0.58 |
| Sex, N (%) female) | 35 (59.3) | 17 (70.8) | 18 (51.4) | 0.14 |
| Arteriovenous malformation (AVM) | 0 | 0 | 0 | > 0.99 |
| Arteriovenous fistula | 0 | 0 | 0 | > 0.99 |
| Evidence of prior haemorrhage | 0 | 0 | 1 (2.7%) | 0.41 |
| Aneurysm† | 4 (6.8) | 1 (4.3) | 3 (8.3%) | 0.51 |
| Telangiectasia* | 2 (3.4) | 1 (4.3%) | 1 (2.7%) | > 0.99 |
| Infarcts | 20 (33.9) | 9 (39.1) | 11 (30.6) | 0.63 |
| Posterior circulation infarcts | 15 (25.4) | 6 (26.1) | 9 (25) | 0.95 |
| Anterior circulation infarcts | 9 (15.3) | 5 (21.7) | 4 (11.1) | 0.33 |
| Microangiopathic changes | 9 (15.3) | 3 (13.0) | 6 (16.7) | 0.45 |
| Contusion | 2 (3.4) | 1 (4.3) | 1 (2.7) | > 0.99 |
| Meningioma | 1 (1.7) | 0 | 1 (2.7) | > 0.99 |
†One at right ophthalmic/left middle cerebral artery junction, one at left internal carotid artery. *one had left cerebellum, left parietal, and left frontal telangiectasia, the second, contrast enhancement suggestive of telangiectasia. P-value calculations: age by Mann Whitney, remainder by Fisher exact test.