Attitudes toward use of hearing protection devices and effects of an intervention on fit-testing results.

This study assessed attitudes toward the use of hearing protection devices (HPDs) and the effect of an educational intervention on fit-testing results by comparing personal attenuation ratings (PAR50) before and after the intervention. Employees (n = 327) from a large metal container manufacturer at four geographic locations were tested with a field attenuation estimation system (FAES) to identify workers (n = 91) requiring intervention. PAR50 values significantly increased from baseline to post-intervention (p < .001, 15.1 to 26.9) and at the 6-month follow-up (p < .001, 95% confidence interval = -11.2, -6.3). Perceived self-efficacy scores for using HPDs significantly declined from baseline to post-intervention (p = .006, 95% confidence interval = 0.3, 1.9), but were not significantly related to PAR50. Therefore, a FAES can assist the occupational health nurse to identify workers at high risk (low PAR50), teach proper fit and use of HPDs, and improve hearing protector selection. Copyright 2014, SLACK Incorporated.