Improvement in Acoustic Voice Characteristics in Functional Dysphonia After Therapy

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

50 participants

Study Classification

OBSERVATIONAL

Study Start Date

2015-04-30

Study Completion Date

2015-12-31

Brief Summary

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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).

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Detailed Description

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Conditions

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Functional Voice Disorder

Study Design

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Observational Model Type

COHORT

Study Time Perspective

RETROSPECTIVE

Eligibility Criteria

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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).