Table 2.
Distribution of the phenotypic characteristics of the subjects (n = 54)
| Parameters | Pre-hydroxyurea | Post-hydroxyurea |
|---|---|---|
| Frequency (percentage) | Frequency (percentage) | |
| Number of VOC | ||
| 0–1 | 0 (0) | 50 (92.6) |
| 2–3 | 42 (77.8) | 4 (7.4) |
| >3 | 12 (22.2) | 0 (0) |
| Number of hospitalizations | ||
| 0–1 | 6 (11.1) | 50 (92.6) |
| 2–3 | 38 (70.3) | 4 (7.4) |
| >3 | 10 (18.6) | 0 (0) |
| Number of blood transfusion | ||
| 0 | 28 (51.8) | 50 (92.6) |
| 1 | 17 (31.5) | 3 (5.5) |
| >1 | 9 (16.7) | 1 (1.9) |
| Acute chest syndrome | ||
| 0 | 48 (88.9) | 54 (100.0) |
| 1 | 5 (9.2) | 0 (0) |
| >1 | 1 (1.9) | 0 (0) |