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Analysis of a hearing conservation program data base: factors other than workplace noise
J R Franks1, R R Davis, E F Kreig
1Bioacoustics and Occupational Vibration Section, National Institute for Occupational Safety and Health, Cincinnati, Ohio 45226.
Ear and Hearing
|October 1, 1989
Summary
Standard Threshold Shift (STS) is linked to non-occupational noise exposure and medical history, not workplace noise. This study analyzed hearing conservation records to identify key factors influencing STS in printing company employees.
Area of Science:
- Occupational health
- Audiology
- Industrial hygiene
Background:
- Hearing loss is a significant occupational health concern.
- Standard Threshold Shift (STS) is a key indicator of noise-induced hearing loss.
- Understanding factors contributing to STS is crucial for effective hearing conservation programs.
Purpose of the Study:
- To identify factors associated with Standard Threshold Shift (STS) in a large printing company.
- To determine the relative importance of occupational noise, non-occupational noise, and medical history in STS development.
Main Methods:
- Analysis of hearing conservation records from a multi-facility printing company.
- Inclusion of variables such as hearing levels, age, sex, occupational and non-occupational noise exposure, and medical history.
- Statistical analysis to identify significant predictors of STS.
Main Results:
- Non-occupational noise exposure history was a statistically significant factor associated with STS.
- Medical history also showed a statistically significant association with STS.
- Occupational noise exposure was not found to be a statistically significant factor for STS in this cohort.
Conclusions:
- Hearing conservation efforts should consider non-occupational noise exposures and individual medical histories.
- Relying solely on occupational noise exposure data may underestimate the risk of STS.
- Further research is needed to elucidate the complex interplay of factors contributing to STS.