Abstract
Objective—This study aimed to examine the associations between acute workplace injury risk,
ambient noise exposure, and hearing acuity, adjusting for reported hearing protection use.
Methods—In a cohort of 9220 aluminum manufacturing workers studied over six years (33 300
person-years, 13 323 person-jobs), multivariate mixed effects models were used to estimate
relative risk (RR) of all injuries as well as serious injuries by noise exposure category and hearing
threshold level (HTL) adjusting for recognized and potential confounders.
Results—Compared to noise