# Exploring the association between occupational noise exposures and injuries

> **NIH ALLCDC R21** · UNIVERSITY OF MICHIGAN AT ANN ARBOR · 2022 · $208,669

## Abstract

ABSTRACT
Occupational injuries represent a tremendous burden to US workers and employers; each year, thousands of
workers are killed, and millions injured, with total costs approaching $200 billion annually. Many factors may
contribute to occupational injury risk, but several – noise exposure, hearing loss (HL), and use of hearing
protection devices (HPDs) – have not been adequately explored. Tens of millions of workers are exposed to
noise high enough to warrant use of hearing protectors, and more than 10 million workers have HL. We propose
to combine noise exposure estimates we have previously developed in our online Job Exposure Matrix (JEM)
for occupational noise in the US and Canada with national occupational injury surveillance data from both
countries. This 2-year study will evaluate the relationship between occupational injuries and noise, and to assess
the potential contributions of hearing loss and use of HPDs on this relationship. We propose two specific aims:
 • We will assess the risk of nonfatal and fatal occupational injuries associated with occupational noise
 exposure over a 20-year period (1998-2018). We will estimate risks of injuries associated with full-shift
 Time-Weighted Average (TWA) noise exposures over the study period, adjusting for job title and industry.
 We will also calculate the attributable risk of injury due to noise exposure and evaluate whether a
 threshold exposure level exists above which injury risk is substantially elevated. This aim has one
 subaim: to explore different noise metrics for evaluation of injury risk, including mean, maximum, and
 standard deviation of TWA level and percent of workshifts >85 dBA and >90 dBA, measured using both
 US and Canadian measurement criteria. We will add the results of these analyses to our noise JEM.
 • We will use published estimates of HPD use and HL to evaluate the contributions of these factors to risk
 of nonfatal and fatal occupational injuries. HPD use and HL prevalence estimates will be gathered from
 literature and available data for each job title and industry. We will then modify our Aim 1 models to
 include these characteristics and assess their individual and joint impacts on estimated injury risk, as well
 potential interactions. As with Aim 1, we will add the estimated risks to our noise JEM.
This R2P study addresses a number of priorities of the National Occupational Research Agenda, including the
Cross-Sector agenda for Traumatic Injury Prevention, as well as hearing loss prevention goals of the
Construction, Manufacturing, and Services sector agendas. This proposal also addresses NIOSH strategic goal
6, improve workplace safety to reduce traumatic injuries. The outputs of the study will be publications and noise-
related injury risk estimates that we will add to our existing noise JEM website to allow practitioners access to
actionable information. The intermediate outcomes of the study will be changes in how noise exposure, HL, and
HPD use are addre...

## Key facts

- **NIH application ID:** 10493045
- **Project number:** 5R21OH011896-02
- **Recipient organization:** UNIVERSITY OF MICHIGAN AT ANN ARBOR
- **Principal Investigator:** Richard L Neitzel
- **Activity code:** R21 (R01, R21, SBIR, etc.)
- **Funding institute:** ALLCDC
- **Fiscal year:** 2022
- **Award amount:** $208,669
- **Award type:** 5
- **Project period:** 2021-09-30 → 2023-09-29

## Primary source

NIH RePORTER: https://reporter.nih.gov/project-details/10493045

## Citation

> US National Institutes of Health, RePORTER application 10493045, Exploring the association between occupational noise exposures and injuries (5R21OH011896-02). Retrieved via AI Analytics 2026-05-23 from https://api.ai-analytics.org/grant/nih/10493045. Licensed CC0.

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