| Reason for consultation/Reference | Type of hemoglobin | Total | ||
| Sβ˚ thalassemia | SC | SS | ||
| Anemia | 0 | 0 | 3 | 3 |
| CVO | 1 | 1 | 21 | 23 |
| Pulmonary complications | 1 | 1 | 17 | 19 |
| Total | 2 | 2 | 41 | 45 |