with crude and adjusted ORs for breast cancer in relation to the
presence of a-ZAL residues.
In the unadjusted conditional regression
model, breast cancer showed a statistically significant association
with urinary concentrations of a-ZAL (OR = 1.56; 95%
CI = 1.15–2.59).
When the model was further adjusted for age,
number of children, social class, type of water consumed and
vegetable consumption, urinary concentration of a-ZAL remained
significantly associated with breast cancer risk (adjusted
OR = 1.54; 95% CI = 1.10–2.78).