To visualize the spatial distribution of UICs, the values for
each cluster are shown in Supplemental Fig. 1. For both
population samples, areas of relatively high concentrationwere observed. Statistical analysis of spatial hot spots (Supplemental
Fig. 2) confirmed areas of particularly high iodine intakes
in the central part of the NWZ and the southern part of the
NEZ, whereas an area of relatively low intake was identified in
the far west of the NWZ and in the Lower Shabelle region.