S3 Guideline: Chronic Tinnitus : German Society for Otorhinolaryngology, Head and Neck Surgery e. V. (DGHNO-KHC).

In this study, the verum-treated group showed an improvement in THI after 6 months compared to the control group, although only just marginally significant, while hearing thresholds did not improve with this treatment [ 219 ].

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The authors reported significant or highly significant changes in perceived loudness (visual analogue scale) and the Tinnitus Handicap Inventory ([ 198 ]; the publication is available in Chinese; only the abstract is available in English).

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