Table 3.
HbF (geometric means) and HbA2 (means, SD) in beta thalassaemia trait compared with cohort HbAA phenotypes with significance of differences
| Phenotype | n | HbF (95% CI) | p value deviation from HbAA | n | HbA2 mean (SD) | p value deviation from HbAA |
|---|---|---|---|---|---|---|
| Males | ||||||
| HbAA | 87 | 0.27 (0.24, 0.31) | - | 71 | 2.82 (0.43) | - |
| Mild β+ thalassaemia | 41 | 2.34 (1.71, 3.21) | <0.001 | 53 | 5.67 (0.44) | 0.001 |
| IVSII-781 C>G | 1 | 0.90 | 0.104 | 2 | 3.5 (0) | 0.047 |
| IVSII-849 A>G | 6 | 0.64 (0.48, 0.86) | 0.006 | 8 | 5.43 (0.92) | 0.001 |
| Females | ||||||
| HbAA | 94 | 0.31 (0.27, 0.35) | - | 80 | 2.84 (0.30) | - |
| Mild β+ thalassaemia | 42 | 2.94 (2.25, 3.85) | <0.001 | 55 | 5.27 (0.64) | 0.001 |
| IVSII-781 C>G | 1 | 0.90 | 0.146 | 3 | 3.57 (0.06) | 0.009 |
| IVSII-849 A>G | 2 | 1.94 (0.73, 5.18) | 0.001 | 2 | 5.45 (0.21) | 0.001 |