Audiogram notches in noise-exposed workers

Peter M. Rabinowitz, Deron Galusha, Martin D. Slade, Christine Dixon-Ernst, Kanta D. Sircar, Robert A. Dobie

Research output: Contribution to journalArticlepeer-review

61 Scopus citations


OBJECTIVES: Diagnostic criteria for noise-induced hearing loss include the audiometric notch, yet no standardized definition exists. This study tested whether objective notch metrics could match the clinical judgments of an expert panel. DESIGN: A panel of occupational physicians, otolaryngologists, and audiologists reviewed audiograms of noise-exposed workers. In a two-sample process, the panel judged whether a notch was present and whether hearing loss had progressed in a notch pattern. Quantitative notch metrics were compared against expert decisions. RESULTS: At least five of six experts agreed about notch identification in 71 and 72% of the cases in the two samples, and agreement about notch progression was 61 and 67%. Notch depth and professional specialty appeared to affect notch judgments. Despite this variability, a notch metric showed excellent agreement with expert notch consensus in each sample (94.7 and 96.6%; kappa = 0.88 and 0.92). CONCLUSIONS: Audiogram notch metrics can agree with expert clinical consensus and assist in the surveillance of noise-exposed workers.

Original languageEnglish (US)
Pages (from-to)742-750
Number of pages9
JournalEar and Hearing
Issue number6
StatePublished - Dec 1 2006

ASJC Scopus subject areas

  • Otorhinolaryngology
  • Speech and Hearing


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