
50 Environmental Health: Indoor Exposures, Assessments and Interventions
ing, time of day, season in which blood samples were collected from participants, and
alcohol intake (number of drinks per week) were also considered but did not act as
confounders and were not retained in the final models. To improve interpretability, the
regression coefficients were exponentiated and expressed as a percent change in the
dependent variable (i.e., change in hormone levels or semen quality parameter relative
to the study population median) for an interquartile range (IQR) increase in dust OP
concentration.
RESULTS
Of the 50 dust samples collected, we detected ...