| Parameters | Hemoglobin S haplotypes (n) | p-value | |||
| Benin/Atypical | Benin/Senegal | Senegal/Senegal | |||
| Increased hemoglobin bF | Yes | 18 | 8 | 1 | 0.1748 |
| No | 7 | 5 | 0 | ||
| Death of participants | Yes | 3 | 1 | 0 | 0.4958 |
| No | 22 | 12 | 1 | ||
| Out of the classroom | Yes | 13 | 9 | 1 | 0.0251 |
| No | 12 | 4 | 0 | ||
| Increased hemoglobin levels | Yes | 18 | 9 | 1 | 0.1964 |
| No | 7 | 4 | 0 | ||
| Decreased white blood cell count | Yes | 14 | 4 | 0 | 0.0357 |
| No | 11 | 9 | 1 | ||
| Total |
| 25 | 13 | 1 | - |