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Status unknownNCT03070808Updated Mar 6, 2017

The Influence of Significant Weight Lost on the Quality of Voice

An observational study in Obesity, Morbid and Voice Alteration, sponsored by Kaplan Medical Center. Status unknown. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2017-03-06.

Sponsored by Kaplan Medical Center · Observational

The sponsor has not verified this record recently (last verified Feb 2017), so the status shown — last known as Not yet recruiting — may be out of date.
Study type
Observational
Model
Other
Time perspective
Prospective
Enrollment
50
Ages
18 Years and older
Sex
All
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Study summary

The rate of obesity and bariatric surgery is rising steadily. Though Bariatric Surgery Influences on aspects such as endocrin analysis, finance, etc are well tested, quantitative and quality voice impacts have not been evaluated. The aim of the study is to recruit 50 patients who underwent bariatric surgery and compare voice quality in each of these patients before and after surgery.

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Conditions studied

  • Obesity, Morbid
  • Voice Alteration

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Keywords

  • obesity
  • voice
03

In context

Obesity, Morbid

922 studies on the registry are indexed under Obesity, Morbid; 172 are open to participants now.

This study's planned enrollment of 50 is below the median of 78 across 306 observational studies indexed under Obesity, Morbid.

Browse Obesity, Morbid studies →

Lead sponsor

Kaplan Medical Center is the lead sponsor of 37 studies on the registry; 3 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Adults, 18 years and over, entended for Bariatric Surgery at Kaplan Medicle Center.

Inclusion criteria

  • Morbid obese
  • Candidates for bariatric Surgery

Exclusion criteria

Exclusion Criteria:

  • History of benign \ malignant disease of the larynx.
  • History of head and neck tumors
  • History of radiation therapy of the neck
  • BMI under 30 pre-surgery
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Study design

Observational model
Other
Time perspective
Prospective
Enrollment
50 participants (estimated)
Patient registry
No
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What researchers measure

Primary outcomes

  1. Stroboscopic evaluation of the larynx

    A visual examination of the larynx

    Time frame: 2/16-2/20

Secondary outcomes

  1. Dysphagia handicap Index

    Validitated questioners for dysphagia which result in a score

    Time frame: 2/16-2/20

  2. EAT 10

    Validitated questioners for dysphagia which result in a score

    Time frame: 2/16-2/20

  3. Voice Handicap Index

    Validitated questioners for dysphagia which result in a score

    Time frame: 2/16-2/20

  4. Average Fundamental frequency

    part of voice assessment, in Hertz

    Time frame: 2/16-2/20

  5. Mean Fundamental frequency

    part of voice assessment, in Hertz

    Time frame: 2/16-2/20

  6. Highest Fundamental frequency

    part of voice assessment, in Hertz

    Time frame: 2/16-2/20

  7. Lowest Fundamental frequency

    part of voice assessment, in Hertz

    Time frame: 2/16-2/20

  8. Standard deviation of Fundamental frequency

    part of voice assessment, in numbers

    Time frame: 2/16-2/20

  9. Noise to harmonic ratio

    part of voice assessment, a descripitive measure of voice quality

    Time frame: 2/16-2/20

  10. Voice turbulence Index

    part of voice assessment

    Time frame: 2/16-2/20

  11. Absolute gitter

    Variability of frequency

    Time frame: 2/16-2/20

  12. Jitter percent

    assessment of voice variability

    Time frame: 2/16-2/20

  13. Shimmer percent

    assessment of voice variability

    Time frame: 2/16-2/20

  14. Shimmer in dB

    variability of voice volume

    Time frame: 2/16-2/20

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Study locations

No study locations are listed for this record.

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References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 6, 2017, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT03070808
Lead sponsor
Kaplan Medical Center
Responsible party
Dr Oded Cohen (Doctor, Kaplan Medical Center) — Principal investigator
First posted
Mar 6, 2017
Start date
Mar 15, 2017 (estimated)
Primary completion
Mar 15, 2018 (estimated)
Completion
Sep 15, 2018 (estimated)
Last update
Mar 6, 2017

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Feb 2017. You cannot join it, but the record below documents what was studied.

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Discussion

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