Figure 1.

Risk factors associated with the four focal infections in school-aged children in Zanzibar. Generalized linear mixed modelling (GLMM) predicted prevalence (equating to risk of infection) of (a) Trichuris trichiura, (b) Ascaris lumbricoides, (c) hookworm and (d) self-reported fever, with the significant risk factors from each model. Section (i) of each graph presents the significant non-infection terms, with predictions made at a value of faecal egg counts (FECs) = 0 and no self-reported fever for model (a). Section (ii) of each graph presents the significant infection terms. Predictions for the infection terms were made with village set to Bandamaji for models (a) and (b), sex set to male for model (c) and no soil consumption for model (d). Error bars show the 95% confidence limits of the predictions.