PedsQL SF15 scores for study participants stratified according to <i>S. haematobium</i> egg-positive <i>vs.</i> egg-negative status.

aSh egg-positive were those children initially found to have S. haematobium eggs on urine filtration during parasitological surveys. Sh egg –negative were children who had been egg-negative. N.B. The PedsQL SF15 was administered after testing and treatment for infection. (n = 802 for child self-report and 765 for parent proxy report). bEffect size = (difference between cases and controls)/SD of controls. Effect sizes are typically designated as small (0.20–0.49), medium (0.50–0.79), or large (≥0.80). cP<0.05 (independent sample t-test).