Demographic factors, past medical history and flight history
| Demographic and clinical features | All, N=77 (%) | Seizures, 39 (50.6) | Stroke, 18 (23.4) | Others, 20 (26) |
| Gender | ||||
| Male | 59 (76.6) | 31 (79.5) | 14 (77.8) | 14 (70) |
| Female | 18 (23.4) | 8 (20.5) | 4 (22.2) | 6 (30) |
| Age: mean±SD (range) | 45.9±17.5 (8–89) | 38.8±14.3 (8–89) | 60.7±15.5 (24–83) | 46.4±17.1 (22–79) |
| Past medical history | ||||
| Vascular risk factors | 34 (44.2) | 10 (25.7) | 14 (77.8)* | 10 (50) |
| Past seizures | 19 (24.7) | 16 (41)† | 1 (5.5) | 2 (10) |
| Drugs | 24 (31.2) | 19 (48.7)‡ | 3 (16.7) | 2 (10) |
| Alcohol | 18 (23.4) | 14 (36) | 3 (16.7) | 1 (5) |
| Cocaine | 6 (7.8) | 4 (10.3) | 0 | 2 (10) |
| Cannabis | 2 (2.6) | 2 (5.1) | 0 | 0 |
| Sedatives | 2 (2.6) | 2 (5.1) | 0 | 0 |
| Amphetamines | 1 (1.3) | 1 (2.6) | 0 | 0 |
| Flight duration | ||||
| ≥3 h | 42 (61.8) | 22 (56.4) | 7 (38.9) | 13 (65) |
| <3 h | 26 (38.2) | 11 (28.2) | 8 (44.4) | 7 (35) |
| Unknown | 9 (11.7) | 6 (15.4) | 3 (16.7) | 0 |
| Onset of symptoms | ||||
| During the flight | 31 (41.3) | 15 (38.5) | 5 (27.8) | 11 (55) |
| After landing | 44 (58.7) | 23 (59) | 13 (72.2) | 8 (40) |
| Unknown | 2 (5.1) | 1 (2.6) | 0 | 1 (5) |