Multivariate analysis was used to establish the associations of sex,
age and arsenic exposure status based on arsenic concentration in
ingested water, their interactions with arsenic concentrations in hair
and urine, and the metabolic capacity of arsenic (Table 2). Concentrations
of hair arsenic and urinary arsenic and IMD, and compositions of
AB and MMA in urine, were significantly associated only with arsenic
exposure status. As we explained earlier, these values, except for AB%,
were significantly higher in the high exposure group than in the lowexposure
group. For AB%, a higher value was found for the low exposure