Figure 2

Association between α⁺-thalassaemia and malaria rates, overall and by age class. Episodes as predefined (see text). Line bars and values between brackets indicate 95% CIs. Estimates adjusted for baseline Plasmodium infection status, distance between homestead and clinic (continuous variable), height-for-age z-score (continuous variable), mosquito net use and experimental intervention.; corresponding p-values for the difference in hazard ratios between children < 18 months and ≥ 18 months: 0.006 and 0.18, for hetero-and homozygotes respectively.