Table 3 Univariate analyses: stroke risk after transient monocular blindness.
| Characteristics | Any ischaemic stroke and retinal infarction (n = 42) | |
|---|---|---|
| HR | 95% CI | |
| Demographic characteristics | ||
| Male | 1.4 | 0.7 to 2.8 |
| Age ⩾65 years | 1.8 | 1.0 to 3.3 |
| Risk factors | ||
| History of stroke | 2.8 | 1.3 to 6.3 |
| History of angina pectoris | 1.0 | 0.5 to 2.2 |
| History of myocardial infarction | 1.6 | 0.7 to 3.6 |
| History of hypertension | 1.6 | 0.9 to 2.9 |
| History of intermittent claudication | 2.2 | 1.1 to 4.5 |
| History of hyperlipidaemia | 1.3 | 0.6 to 2.5 |
| Diabetes mellitus | 4.3 | 1.9 to 9.8 |
| Cigarette smoking | 1.7 | 0.9 to 3.0 |
| Status on study entry | ||
| Rankin score ⩾3 | 4.9 | 1.5 to 15.8 |
| Systolic blood pressure ⩾160 mm Hg | 1.1 | 0.6 to 2.1 |
| Diastolic blood pressure ⩾90 mm Hg | 1.1 | 0.6 to 2.1 |
| Previous vascular intervention or operation | 1.8 | 0.9 to 3.6 |
| Presentation | ||
| Duration of attack >24 h | 0.8 | 0.2 to 2.5 |
| Number of attacks >3 | 2.6 | 1.4 to 4.9 |
| Left eye | 1.1 | 0.5 to 2.2 |
| Duplex ultrasonography of ipsilateral internal carotid artery | ||
| Normal | reference | |
| 1–69% stenosis | 8.4 | 2.0 to 35.3 |
| 70–99% stenosis | 7.6 | 2.2 to 26.7 |
| Occlusion | 9.7 | 2.5 to 37.6 |
| Any stenosis | 8.5 | 2.6 to 28.2 |
HR, hazard ratio