Patient characteristics
| . | n (%) . |
|---|---|
| Age, y (mean ± SD) | 29.7 ± 10.2 |
| Female | 54 (56) |
| Hypertension | 3 (3) |
| Diabetes mellitus | 1 (1) |
| Current smoking | 1 (2) |
| Dyslipidemia | 0 (0) |
| Epileptic seizures | 8 (8) |
| Headaches | 22 (23) |
| Previously suspected TIA | 4 (4) |
| Previously known stroke | 41 (42)∗ |
| Ischemic | 38 (40) |
| Hemorrhagic | 4 (4) |
| Previously suspected or known intracranial vasculopathy | 60 (61) |
| Genotype | |
| SS | 91 (95) |
| Sβ | 2 (2) |
| SC | 3 (3) |
| Treatment | |
| Blood exchange transfusion (±hydroxyurea) | 61 (63) |
| Hydroxyurea only | 25 (26) |
| Cerebral revascularization | 6 (6) |
| None | 10 (10) |
| EL | |
| Grade 1 (education stopped before the ninth grade) | 10 (10) |
| Grade 2 (education stopped before the 12th grade) | 34 (35) |
| Grade 3 (education “after high school”) | 52 (54) |
| CE | |
| France (since preschool, 3) | 66 (69) |
| France (since primary school, 2) | 6 (6) |
| Other (1) | 22 (23) |
| Unknown | 2 (2) |
| Cognitive complaint | |
| Absent | 43 (45) |
| Present | 51 (53) |
| Unknown | 2 (2) |
| . | n (%) . |
|---|---|
| Age, y (mean ± SD) | 29.7 ± 10.2 |
| Female | 54 (56) |
| Hypertension | 3 (3) |
| Diabetes mellitus | 1 (1) |
| Current smoking | 1 (2) |
| Dyslipidemia | 0 (0) |
| Epileptic seizures | 8 (8) |
| Headaches | 22 (23) |
| Previously suspected TIA | 4 (4) |
| Previously known stroke | 41 (42)∗ |
| Ischemic | 38 (40) |
| Hemorrhagic | 4 (4) |
| Previously suspected or known intracranial vasculopathy | 60 (61) |
| Genotype | |
| SS | 91 (95) |
| Sβ | 2 (2) |
| SC | 3 (3) |
| Treatment | |
| Blood exchange transfusion (±hydroxyurea) | 61 (63) |
| Hydroxyurea only | 25 (26) |
| Cerebral revascularization | 6 (6) |
| None | 10 (10) |
| EL | |
| Grade 1 (education stopped before the ninth grade) | 10 (10) |
| Grade 2 (education stopped before the 12th grade) | 34 (35) |
| Grade 3 (education “after high school”) | 52 (54) |
| CE | |
| France (since preschool, 3) | 66 (69) |
| France (since primary school, 2) | 6 (6) |
| Other (1) | 22 (23) |
| Unknown | 2 (2) |
| Cognitive complaint | |
| Absent | 43 (45) |
| Present | 51 (53) |
| Unknown | 2 (2) |
N = 96 patients.
SD, standard deviation; TIA, transient ischemic attack.
One patient had both an ischemic and an hemorrhagic stroke history.