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| Year : 2006
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: 8 | Issue : 30 | Page
: 61 |
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| Estimating noise-induced permanent threshold shift from audiometric shape: The ISO-1999 model |
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RA Dobie
,
Click here for correspondence address
and email
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How to cite this article:
Dobie R A. Estimating noise-induced permanent threshold shift from audiometric shape: The ISO-1999 model. Noise Health 2006;8:61 |
OBJECTIVE: To describe the relation between audiometric shape and noise-induced permanent threshold shift averaged across the speech frequencies (N5123). DESIGN: Using an international standard (ISO-1999), 270 audiograms were created, representing both sexes and a variety of ages, exposure levels, and percentiles. Bulge depth (BD) was defined as the difference between pure-tone average for 2, 3, and 4 kHz and PTA for 1 and 6 kHz. RESULTS: N5123 was well-predicted by quadratic functions of BD, which accounted for 72 to 95% of the variance in N5123. CONCLUSIONS: Estimates of N5123, based on BD, can be helpful in medical-legal diagnosis and allocation of hearing loss.
Correspondence Address:
R A Dobie
,
 Source of Support: None, Conflict of Interest: None  | Check |
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