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Characteristics of Participants.
| Characteristic | Median (mean; min – max) or Number (%) |
|---|---|
| Age | |
| Start of hydroxyurea (months) | 11.8 (40.2; 6.4 – 234.6) |
| Last follow-up (years) | 6.0 (7.2; 2.3 – 21.9) |
| Sex | |
| Male | 27 (56) |
| Female | 21 (44) |
| β-globin genotype | |
| βS/βS | 46 (96) |
| βS/β0 | 2 (4) |
| α-globin genotype | |
| αα/αα | 30 (63) |
| αα/–α | 12 (25) |
| −α/–α | 4 (8) |
| αα/ααα | 2 (4) |
