OSHA Standard Threshold Shift With Age Correction (29 CFR 1910.95(g), App. F)
OSHA standard threshold shift: an average change of 10 dB or more at 2000, 3000 and 4000 Hz in either ear.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Right ear, baseline, 2000 Hz
- 0
- Right ear, baseline, 3000 Hz
- 0
- Right ear, baseline, 4000 Hz
- 5
- Right ear, recent, 2000 Hz
- 10
- Right ear, recent, 3000 Hz
- 10
- Right ear, recent, 4000 Hz
- 25
- Apply the Appendix F age correction
- Yes
- Sex
- Male
- Age at the baseline audiogram
- 27
- Age at the recent audiogram
- 32
Result: Standard threshold shift after age correction: an average of 10 dB or more at 2000, 3000 and 4000 Hz in the right ear.
The tool opens with these values already filled in. Replace them with your own.
What you enter
- Right ear, baseline, 2000 Hz (dB)
- Right ear, baseline, 3000 Hz (dB)
- Right ear, baseline, 4000 Hz (dB)
- Right ear, recent, 2000 Hz (dB)
- Right ear, recent, 3000 Hz (dB)
- Right ear, recent, 4000 Hz (dB)
- Left ear, baseline, 2000 Hz (dB)
- Left ear, baseline, 3000 Hz (dB)
- Left ear, baseline, 4000 Hz (dB)
- Left ear, recent, 2000 Hz (dB)
The other 6 fields
- Left ear, recent, 3000 Hz (dB)
- Left ear, recent, 4000 Hz (dB)
- Apply the Appendix F age correction
- Sex (selects Table F-1 or F-2)
- Age at the baseline audiogram (years)
- Age at the recent audiogram (years)
How this is calculated
Citation
Occupational Safety and Health Administration. Occupational noise exposure, 29 CFR 1910.95: paragraph (g)(10) (standard threshold shift), paragraphs (g)(7) to (g)(9) (retest, follow-up and revised baseline), and Appendix F with Tables F-1 and F-2 (age correction). Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.