Estimating noise-induced permanent threshold shift from audiometric shape: The ISO-1999 model

Robert A. Dobie

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)630-635
Number of pages6
JournalEar and hearing
Volume26
Issue number6
DOIs
StatePublished - Dec 1 2005

ASJC Scopus subject areas

  • Otorhinolaryngology
  • Speech and Hearing

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