The close correlation between the categories of UIC in
women and SAC is shown in Fig. 1, with the proportion showing
a UIC indicative of excessive iodine intake being higher in SAC
than in women in all 3 zones. Overall, a high proportion of
participants showed a UIC indicative of excessive intake. This
was seen in all 3 zones where 43.9%, 62.4%, and 52.1% of
samples from women and 48.5%, 76.3%, and 63.1% of samples
from SAC in the NWZ, NEZ, and SCZ, respectively, were
categorized as having excessive intakes. In both population
groups, the highest proportion of participants with a UIC >300
mg/L was found in the NEZ. In the weighted national estimate,
51.7% of women and 61.6% of SAC had a UIC indicating
excessive intake.