Table 1 Baseline characteristics
Patients | Overall Group (n = 187) |
|---|---|
Disease type | |
Hgb SS | 174 (93%) |
Hgb Sβo | 13 (7%) |
Age, mean (sd) | 13.5 (4.5) |
Age group | |
4–11 years | 74 (40%) |
12–21 years | 113 (60%) |
Sex | |
Female | 94 (50%) |
Treated with hydroxyurea within 3 months prior to randomization | 114 (61%) |
History of acute chest syndrome | 143 (76%) |
Hospitalizations for a pain crisis in past 3 years | |
0 | 16 (9%) |
1 | 23 (12%) |
2 | 25 (13%) |
3 | 29 (16%) |
4 | 17 (9%) |
5 | 13 (7%) |
≥ 6 | 63 (34%) |