Fig. 1.

Classification trees for (A) Ascaris spp. and (B) hookworm infections from recursive partitioning. Each node represents an independent variable by which the model partitions the sample. Nodes are categorised into four colours broadly representing demographic, environmental and water, sanitation and hygiene (WASH) variables as well as the outcome node. The outcome node displays the number and percentage of participants infected and not infected with Ascaris spp. denoted as ‘Asc. spp. +’ and ‘Asc spp. –’, and hookworm denoted as ‘Hook +’ and ‘Hook –’. A green arrow from the left of a parent node indicates that participants in the subsequent node fit the criteria described in the parent node. A red arrow from the right of a parent node indicates that the participants in the subsequent node did not fit the criteria described in the parent node. Normalised difference vegetation index (NDVI) in (A) refers to a vegetation index taking values between −1 and 1 (more vegetation).