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Impact of hearing loss on tinnitus severity

It is generally accepted that tinnitus severity is influenced by stress and depression (Folmer, Griest, Meikle, & Martin, 1999) while the contribution of hearing loss to tinnitus severity is unclear (Baskill & Coles, 1999). Functional imaging has suggested that the degree of cortical reorganisation following hearing loss contributes to tinnitus severity (Muhlnickel, Elbert, Taub, & Flor, 1998) while more severe tinnitus has also been associated with gently sloping audiograms (Weisz, Voss, Berg, & Elbert, 2004). This study related results for two self-report questionnaires, the Tinnitus Handicap Questionnaire (THQ) (Kuk, Tyler, Russell, & Jordan, 1990) and the Tinnitus Severity Index (TSI) (Meikle, Griest, Stewart, & Press, 1995) to audiometric results from 79 patients attending a tinnitus clinic. The TSI did not show a statistically significant correlation with any variables obtained from the audiogram. The Tinnitus Handicap Questionnaire score was correlated to aspects of the pure tone audiometry — in particular elevated low frequency thresholds were correlated with greater tinnitus handicap. The relationship between hearing loss and measures of tinnitus impact are discussed.