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. 2020 Nov 2;14(11):e0008771. doi: 10.1371/journal.pntd.0008771

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© 2020 The DeWorm3 Trials Team

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Fig 3 — Age- and cluster-weighted (A) prevalence estimates of infection and (B) prevalence of moderate- or heavy-intensity of infection. Weighted estimates account for the stratified sampling approach by age (stage 1) and cluster (stage 2). Cluster-specific age-weighted prevalences (Pr_cw) were calculated by taking sum of the age-specific prevalences (Pr_PSAC, Pr_SAC or Pr_adult) multiplied by the proportion (Prop) of that age group for each cluster among those 1+ years old (Pr_cw = Pr_PSAC*Prop_PSAC+Pr_SAC*Prop_SAC+Pr_Adult*Prop_Adult). The final age- and cluster-weighted prevalences (Pr_w) were calculated by taking the sum of the cluster-specific age-weighted prevalences multiplied by the proportion of the census population living in each cluster (Pr_w = Pr_c1w*Prop_c1+ Pr_c2w*Prop_c2 … Pr_c40w*Prop_c40)_. Error bars represent weighted Wilson 95% confidence intervals with design effect adjustment.