Effect of the IST intervention at 9- and 24-months follow-up on sustained attention outcomes for younger (class 1) and older (class 5) 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 N, number of children eligible for follow-up (not withdrawn or deceased).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.aMean difference (intervention-control) are obtained from GEE analysis accounting for school-level clustering.bMean score and SD at follow-up.cPencil tap test was conducted at baseline and single digit code transmission task was conducted at 9- and 24-months follow-ups.dDouble digit code transmission was conducted at baseline and both follow-ups.