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Frequency of visual aura among all headache attacks in participants with migraine and probable migraine.
| Frequency of visual aura in all headache attacks | Migraine, N (%) | Probable migraine, N (%) |
|---|---|---|
| < 10% | 7 (14.0) | 19 (23.2) |
| 10–24% | 18 (36.0) | 29 (35.4) |
| 25–50% | 12 (24.0) | 19 (23.2) |
| 51–75% | 8 (16.0) | 11 (13.4) |
| 76–99% | 3 (6.0) | 3 (3.7) |
| 100% | 2 (4.0) | 1 (1.2) |
| Total | 50 (100.0) | 82 (100.0) |
