ORs were positive
but not statistically significant for the other
exposures of a priori interest except quinoline.
In sex-stratified models, adjusted ORs for the
highest versus lowest quintile among boys
were positive and statistically significant for
diesel, methylene chloride, all metals except
chromium and arsenic, and the overall metals
score, as well as for the pooled OR for metals.
Corresponding ORs for girls were near
or below 1.0 for every exposure except manganese,
mercury, diesel, methylene chloride,
and quinoline, which had positive but not
statistically significant associations with ASD
(Table 2). We found a statistically significant
linear sex-by-overall-metals-exposure interaction
term (OR = 2.1; 95% CI: 1.8, 2.5), as
well as statistically significant sex-by-pollutant
interactions for nickel and antimony, and
borderline significant interactions (p < 0.10)
for cadmium, lead, and trichloroethylene.