Effect of the IST intervention at 12- and 24-months follow-up on health outcomes anaemia and P. falciparum prevalence for study children.

Results presented (i) for all children with outcome data (unadjusted) and (ii) for those with baseline measurements of each outcome and accounting for age, sex, and stratification effects (adjusted) as the primary pre-specified analysis. N, number of children eligible for follow-up (not withdrawn or deceased). Adjusted: for baseline age, sex, school mean exam score and literacy group (to account for stratification), and baseline measure of the outcome, where available; unadjusted: all children with outcome measures, not adjusted for any baseline or study design characteristics.aRisk ratios (intervention/control) presented for binary outcomes (anaemia and P. falciparum prevalence) and are obtained from GEE analysis accounting for school-level clustering.bNumber and percentage with outcome.cAge-sex specific anaemia was defined using age and sex corrected WHO thresholds of Hb: dNot including baseline P. falciparum infection.