| HbAA (n = 1238) | HbAS (n = 314) | OR [95% CI] | P_value |
---|---|---|---|---|
Gender, n (%) | ||||
 Male | 612 (49.43) | 180 (57.32) | 1.37 [1.07–1.76] | 0.012* |
 Female | 626 (50.57) | 134 (42.68) |  |  |
Median age [range] | 9 [1–16] | 8 [1–15] |  |  |
Age groups (years), n (%) | ||||
 ≤ 5 | 239 (19.31) | 64 (20.38) | 1.07 [0.79–1.45] | 0.667 |
 6–10 | 567 (45.80) | 157 (50) | 1.18 [0.92–1.52] | 0.183 |
 > 10 | 432 (34.89) | 93 (29.62) | 0.785 [0.60–1.02] | 0.078 |