Table 2. Additional characteristics of study participants.
All variables are reported as n (%) unless otherwise stated.
HU: hydroxyurea; VOC: vaso-occlusive crisis; ACS: acute chest syndrome
| Demographic Variables | n=54 |
| ER visits | |
| No | 4 (7.4) |
| Yes | 50 (92.6) |
| Admission | |
| No | 5 (9.3) |
| Yes | 49 (90.7) |
| Therapeutic intervention | |
| Hydroxyurea | |
| Used at least once | |
| No | 6 (11.1) |
| Yes | 48 (88.9) |
| Age at starting HU (years), mean (SD) (n=47) | 7.49 (3.30) |
| Transfusion | |
| Received blood transfusion | |
| No | 11 (20.4) |
| Yes | 43 (79.6) |
| Type of transfusion (n=42) | |
| Intermittent Transfusion | 34 (81.0) |
| Chronic Transfusion | 4 (9.5) |
| Temporizing | 4 (9.5) |
| Iron Chelation | |
| No | 49 (90.7) |
| Yes | 5 (9.3) |
| Bone Marrow Transplantation | |
| No | 52 (96.3) |
| Yes | 2 (3.7) |
| SCD crises | |
| Ever had SCD crises | |
| No | 5 (9.3) |
| Yes | 49 (90.7) |
| VOC (≥ 3 episodes) | |
| No | 10 (18.5) |
| Yes | 44 (81.5) |
| ACS (> 2 episodes) | |
| No | 42 (77.8) |
| Yes | 12 (22.8) |
| Splenic sequestration | |
| No | 41 (75.9) |
| Yes | 13 (24.1) |
| Pain crisis | |
| No | 33 (61.1) |
| Yes | 21 (38.9) |
| Aplastic crisis | |
| No | 47 (87.0) |
| Yes | 7 (13.0) |
| Hemolytic crisis | |
| No | 42 (77.8) |
| Yes | 12 (22.2) |
| Cerebral vasculopathy | |
| No | 49 (90.7) |
| Yes | 12 (22.8) |