History characteristics of 178 patients with transient loss of vision in one eye related with the presence of 1%–69% stenosis, 70%–99% stenosis, or occlusion of the ipsilateral ICA
| Characteristic | n | Ipsilateral ICA | |||||||
|---|---|---|---|---|---|---|---|---|---|
| 1%–69% stenosis only (n=33) | 70%–99% stenosis only (n=100) | Occlusion only (n=45) | |||||||
| OR2-150 | 95% CI | OR2-150 | 95% CI | OR2-150 | 95% CI | ||||
| Altitudinal onset | 57 | 7.0 | 2.5–19.5 | 3.7 | 1.6–8.3 | 3.5 | 1.3–9.6 | ||
| Altitudinal disappearance | 54 | 4.8 | 1.8–12.9 | 2.3 | 1.0–5.0 | 2.4 | 0.9–6.4 | ||
| Speed of onset in seconds | 94 | 1.2 | 0.5–3.1 | 1.8 | 1.0–3.2 | 1.3 | 0.6–3.0 | ||
| Duration of 1–10 minutes | 171 | 0.6 | 0.2–1.3 | 1.7 | 1.0–2.9 | 1.1 | 0.6–2.3 | ||
| More than 10 attacks | 91 | 0.6 | 0.2–1.8 | 1.7 | 0.9–3.1 | 2.1 | 1.0–4.5 | ||
| Retinal claudication | 13 | 1.2 | 0–12.8 | 1.2 | 0.2–7.2 | 4.8 | 1.0–25.3 | ||
| Unknown mode of onset | 41 | 0.3 | 0–1.3 | 0.5 | 0.2–1.1 | 0.2 | 0–1.0 | ||
ICA=internal carotid artery.
↵2-150 Odds ratio(OR) for the presence of 1%–69% stenosis, ⩾70% stenosis, or occlusion versus normal ICA.