Test score change over 18 months follow-up in relation to single and polyparasitic helminth infection decline among school-aged children from Leyte, The Philippines.*

Children were recruited between 2002 and 2004. WRAML = Wide Range Assessment of Memory and Learning; CI = confidence interval; EPG = eggs per gram of stool; STH = soil-transmitted helminth infections; WAZ = weight-for-age z-scores.*Estimates are differences in testscores for declines vs. no change or increase in helminth infections and other covariates shown. Estimated are derived a repeated measures linear mixed model adjusted for: time, child age at enrollment, sex, nutritional status, baseline S. japonicum infection, baseline STH intensity, socioeconomic status, and baseline anemia.**The reference group for baseline S. japonicum intensity consists of low intensity infections. For A. lumbricoides and T. trichiura baseline infections, the reference group consists of children with none/low infections. For hookworm infection only, the reference group consists of uninfected children. For baseline polyparasitic STH infections, the reference group includes children with none/all low infections.