CompletedNot Applicable

Improvement in Acoustic Voice Characteristics in Functional Dysphonia After Therapy

Switzerland50 participantsStarted 2015-04

Plain-language summary

In a retrospective analysis of already existing clinical assessment data from patients with functional voice disorders the following aspects will be sampled, encoded and analysed: Outcomes pre and post treatment of 1. subjective voice symptoms measured by Voice Handicap Index (VHI-9i), 2. perceptual voice symptoms according to Grading-Roughness-Breathiness-Asthenia-Strain Scale (GRBAS Scale), 3. instrumental acoustic analysis parameters Jitter (%), speaking voice profile: mean and range of speaking pitch and intensity, max. intensity and mean pitch of calling voice, singing voice: min./max. and range of pitch and intensity, maximum phonation time, Dysphonia Severity Index (DSI).

Who can participate

Age range20 Years – 70 Years

SexALL

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AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * informed consent; patients 20 to 70 years with functional voice disorder; -diagnostics and voice therapy at University Hospital Zurich; * full pre- and post treatment voice assessment (videostroboscopy, subjective self- assessment, instrumental acoustic and perceptual analysis). Exclusion Criteria: * known neurologic and psychiatric disease, * hearing disorder, * surgery of the head and neck area or intubation (for any reason) in last 18 months.

What they're measuring

Instrumental acoustic voice parameters

Timeframe: Before (initial diagnosis) and after voice therapy, expected average of 11-20 weeks after initial diagnosis)

Trial details

NCT IDNCT02518425

SponsorUniversity of Zurich

Sponsor typeOTHER

Study typeOBSERVATIONAL

Primary completion2015-12

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