Voice DisordersNCT05220982
Improving Efficacy of Voice Therapy Concepts Via Telepractice and Mobile App Technology
A study testing Conversation Training Therapy, Global Voice Prevention and Therapy Model and Modified Conversation Training Therapy in people with Voice Disorders, run by West Chester University of Pennsylvania at 1 site in United States.
Trial summary
Due to the COVID-19 pandemic, telepractice has grown rapidly. To date, synchronous telepractice (i.e., in real-time videoconferencing) has been the focus of most research with asynchronous telepractice (i.e. information stored and accessed later) being used minimally only to record synchronous encounters. Read more about this study
- Who is it for?
- Ages 18 years and olderHealthy volunteers can take part
- Conditions the study is for
- Voice Disorders
- What is being tested?
- Conversation Training Therapy, Global Voice Prevention and Therapy Model and Modified Conversation Training Therapy
- Type of treatment
- Pill or oral medicine, Lifestyle or therapy programme
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 32 participants
- Where
- 1 siteUnited States
- Study dates
- 31 Aug 2022to 31 Aug 2025
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Vocally healthy student in a bachelor of education program with student teaching planned for spring
- Professional teacher who is currently working as a teacher with voice complaints, but has not sought help for the complaints
- Owner of either an android or iOS smartphone or tablet.
Who cannot join
- Not a student teacher
- Not a professional teacher.
- Does not own a smartphone.
Trial locations and contacts
1 site in 1 country.
United States1 site, 1 recruiting
- Recruiting
Elizabeth Grillo
West Chester, Pennsylvania, 19383
Elizabeth U Grillo, Ph.D., 610-436-2132, egrillo@wcupa.edu
About this study
Due to the COVID-19 pandemic, telepractice has grown rapidly. To date, synchronous telepractice (i.e., in real-time videoconferencing) has been the focus of most research with asynchronous telepractice (i.e. information stored and accessed later) being used minimally only to record synchronous encounters. Descriptions of voice therapy concepts are minimally available in the literature with no standard reporting framework and no clinical efficacy or effectiveness data. Thus, the proposed study will address these barriers. First, an asynchronous method will be developed that will impact both in-person and telepractice services by offering repeated learning opportunities in the client's environment. The method includes ecological momentary intervention (EMI) through a daily voice therapy practice app, server, and web portal that is flexible in its programming to meet the needs of the client, offers performance feedback, and charts results over time. Second, voice therapy concepts will be tested improving our knowledge about such concepts that facilitate successful client-centered outcomes for both prevention and treatment of voice problems. The participants in the study will be teachers who have a high prevalence of voice problems, impact the healthcare system when treatment is needed, and negatively affect students' learning abilities in the classroom when communicating with a voice problem. Third, the Rehabilitation Treatment Specification System (RTSS) framework will be used to describe the voice therapy concepts. The concepts include: training multiple voices to meet all the clients' vocal needs, defining voice qualities by the anatomy and physiology of the voice production system, generalizing voice targets into hierarchical speech tasks, and using "new" vs "other/old" voice to help the client become their own clinician. Vocally healthy student teachers and professional teachers with voice complaints will be randomized into one of four voice therapy conditions delivered via telepractice. Both groups of teachers are needed to assess the concepts for prevention and treatment. Condition 2, which fully represents the proposed voice therapy concepts, will be superior to the other three conditions, which do not fully represent the concepts, by demonstrating a greater decrease in client-reported primary outcome measures of the Voice Handicap Index-10 and factor 1 and 2 of the Vocal Fatigue Index. Secondary outcomes of acoustic measures, Borg Category Ratio-10 scales for vocal and mental effort, and voice therapy satisfaction surveys will also be investigated. The results will be useful at a practical level by advancing asynchronous telepractice and by improving efficacy of voice therapy concepts. In addition, the results will lay the groundwork for future studies involving development of EMI platforms in other areas of speech-language pathology and testing additional voice therapy concepts that facilitate successful client-centered outcomes.
- Conditions
- Voice Disorders
- Being tested
- Conversation Training Therapy, Global Voice Prevention and Therapy Model, Modified Conversation Training Therapy, Modified Global Voice Prevention and Therapy Model
- Medical subject headings
- Voice Disorders
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Conversation Training TherapyBehavioural
Training clear speech in conversation with new vs old voice. Training will occur over four weekly synchronous telepractice sessions. Each session lasts 45-60 minutes. The ecological momentary intervention (EMI) platform (app, server, web portal) will reflect the goals of the intervention. Participants will use the EMI platform to practice voice targets three times a day.
Global Voice Prevention and Therapy ModelBehavioural
Training of four new voices (i.e., resonant voice in connected speech, falsetto for quiet talking, oral twang for talking over noise, and belt for healthy yelling) defined and trained by the anatomy and physiology of the system (i.e., Estill Voice Training's Figures). Training occurs in a bottom-up speech hierarchy with new vs other or old voice at each step. Additional methods are used in asynchronous telepractice to support the new voices during week 1 (e.g., vocal hygiene and education). Training will occur over three weekly synchronous telepractice sessions. Each session lasts 45-60 minutes. The ecological momentary intervention (EMI) platform (app, server, web portal) will reflect the goals of the intervention. Participants will use the EMI platform to practice voice targets three times a day.
Modified Conversation Training TherapyBehavioural
Training clear speech in conversation with no use of new vs old voice. Training will occur over four weekly synchronous telepractice sessions. Each session lasts 45-60 minutes. The ecological momentary intervention (EMI) platform (app, server, web portal) will reflect the goals of the intervention. Participants will use the EMI platform to practice voice targets three times a day.
Modified Global Voice Prevention and Therapy ModelBehavioural
Training of a new resonant voice in connected speech defined and trained by the anatomy and physiology of the system (i.e., Estill Voice Training's Figures). Training occurs in a bottom-up speech hierarchy with no use of new vs old voice. Additional methods are used in asynchronous telepractice to support the new voices during week 1 (e.g., vocal hygiene and education). Training will occur over three weekly synchronous telepractice sessions. Each session lasts 45-60 minutes. The ecological momentary intervention (EMI) platform (app, server, web portal) will reflect the goals of the intervention. Participants will use the EMI platform to practice voice targets three times a day.
| Study group | Role | What they receive |
|---|---|---|
| Conversation Training Therapy | Experimental | Not described Receives: Behavioral: Conversation Training Therapy |
| Global Voice Prevention and Therapy Model | Experimental | Not described Receives: Behavioral: Global Voice Prevention and Therapy Model |
| Modified Conversation Training Therapy | Experimental | Not described Receives: Behavioral: Modified Conversation Training Therapy |
| Modified Global Voice Prevention and Therapy Model | Experimental | Not described Receives: Behavioral: Modified Global Voice Prevention and Therapy Model |
What is being measured
The primary outcome is the main question the study is designed to answer.
Change in Voice Handicap Index 10
The VHI-10 is a client reported outcome measure related to voice impact on quality of life across 10 questions. Each question is rated on a scale from 0-4 with 0 as never, 1 as almost never, 2 as sometimes, 3 as almost always, and 4 as always.
Measured: One time at pre & one time at post condition in fall (4 weeks between pre and post) and once weekly for 15 weeks in spring. Captured on day 4 in the PM for a 5 day period via the VoiceEvalU8 app.
Change in Vocal Fatigue Index (VFI) factor 1 and 2
The VFI is a client reported outcome measure related to tiredness and avoidance of voice in factor 1 and physical voice discomfort in factor 2. Factor 1 has 11 questions and factor 2 has 5 questions. Each question is rated on a scale from 0-4 with 0 as never, 1 as almost never, 2 as sometimes, 3 as almost always, and 4 as always.
Measured: One time at pre & one time at post condition in fall (4 weeks between pre and post) and once weekly for 15 weeks in spring. Captured on day 5 in the PM for a 5 day period via the VoiceEvalU8 app.
Secondary outcomes (10)
Change in Fundamental Frequency
Fundamental frequency will be measured during 3 trials of 5-sec sustained /a/s, the phrase, "we were away a year ago," and a 15-sec connected speech sample.
Measured: One time at pre & one time at post condition in fall (4 weeks between pre and post) and weekly for 15 weeks in spring. Captured twice a day in AM and PM sessions during a 5 day period via the VoiceEvalU8 app.
Change in Jitter%
Jitter% will be measured during 3 trials of 5-sec sustained /a/s, the phrase, "we were away a year ago," and a 15-sec connected speech sample.
Measured: One time at pre & one time at post condition in fall (4 weeks between pre and post) and weekly for 15 weeks in spring. Captured twice a day in AM and PM sessions during a 5 day period via the VoiceEvalU8 app.
Change in noise-to-harmonic ratio
Noise-to-harmonic ratio will be measured during 3 trials of 5-sec sustained /a/s, the phrase, "we were away a year ago," and a 15-sec connected speech sample.
Measured: One time at pre & one time at post condition in fall (4 weeks between pre and post) and weekly for 15 weeks in spring. Captured twice a day in AM and PM sessions during a 5 day period via the VoiceEvalU8 app.
Change in cepstral peak prominence
Cepstral peak prominence will be measured during 3 trials of 5-sec sustained /a/s, the phrase, "we were away a year ago," and a 15-sec connected speech sample.
Measured: One time at pre & one time at post condition in fall (4 weeks between pre and post) and weekly for 15 weeks in spring. Captured twice a day in AM and PM sessions during a 5 day period via the VoiceEvalU8 app.
Change in smoothed cepstral peak prominence
Smoothed cepstral peak prominence will be measured during 3 trials of 5-sec sustained /a/s, the phrase, "we were away a year ago," and a 15-sec connected speech sample.
Measured: One time at pre & one time at post condition in fall (4 weeks between pre and post) and weekly for 15 weeks in spring. Captured twice a day in AM and PM sessions during a 5 day period via the VoiceEvalU8 app.
Change in acoustic voice quality index
Acoustic voice quality index will be measured during 1 trial of the 5-sec sustained /a/ and the phrase, "we were away a year ago,"
Measured: One time at pre & one time at post condition in fall (4 weeks between pre and post) and weekly for 15 weeks in spring. Captured twice a day in AM and PM sessions during a 5 day period via the VoiceEvalU8 app.
Change in Borg Category Ratio (CR)10 scale for vocal effort
The Borg CR10 scale rates vocal effort on a scale from 0-10 with 0 as no effort and 10 as maximum effort.
Measured: One time at pre & one time at post condition in fall (4 weeks between pre and post) and weekly for 15 weeks in spring. Captured once a day in PM sessions during a 5 day period via the VoiceEvalU8 app.
Change in Borg Category Ratio (CR)10 scale for mental effort
The Borg CR10 scale rates mental effort on a scale from 0-10 with 0 as no effort and 10 as maximum effort.
Measured: One time at pre & one time at post condition in fall (4 weeks between pre and post) and weekly for 15 weeks in spring. Captured once a day in PM sessions during a 5 day period via the VoiceEvalU8 app.
Student researcher (SR) voice therapy satisfaction surveys
The voice therapy satisfaction survey will rate the student researchers' (SR) perceptions after completing the voice therapy conditions. The questions are rated on a scale from 1-5 with 1 as strongly disagree and 5 as strongly agree.
There are also some open ended responses. The SR survey has 17 questions.
Measured: Collected immediately after intervention in the fall via Qualtrics online software.
Participant voice therapy satisfaction surveys
The voice therapy satisfaction surveys will rate the participants' perceptions after completing the voice therapy conditions. The questions are rated on a scale from 1-5 with1 as strongly disagree and 5 as strongly agree.
There are also some open ended responses. The participant survey has 12 questions.
Measured: Collected immediately after intervention in the fall via Qualtrics online software.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted2 Feb 2022
- Study start31 Aug 2022
- Primary completion31 Aug 2025 (estimated)
- Study completion31 Aug 2025 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Voice DisordersStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Participant
- Enrolment
- 32 participants (estimated)
Sponsor and investigators
- Lead sponsor
- West Chester University of Pennsylvania
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Elizabeth U Grillo, Ph.D., Principal investigator, West Chester University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05220982
- Sponsor's protocol ID
- R15DC019954
- Status last verified
- Aug 2024
- First submitted
- 6 Jan 2022
- Last updated
- 28 Aug 2024
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 28 Aug 2024. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Improving Efficacy of Voice Therapy Concepts Via Telepractice and Mobile App Technology
- ClinicalTrials.gov ID
- NCT05220982
- Acronym / sponsor ID
- R15DC019954
- Conditions
- Voice Disorders
- Study type
- Interventional
- Recruitment status
- Unknown status
- Enrolment
- 32 participants (estimated)
- Lead sponsor
- West Chester University of PennsylvaniaUniversity, hospital or other
- Study start
- 31 Aug 2022 (actual)
- Primary completion
- 31 Aug 2025 (estimated)
- Study completion
- 31 Aug 2025 (estimated)
- First posted
- 2 Feb 2022 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Due to the COVID-19 pandemic, telepractice has grown rapidly. To date, synchronous telepractice (i.e., in real-time videoconferencing) has been the focus of most research with asynchronous telepractice (i.e. information stored and accessed later) being used minimally only to record synchronous encounters. Descriptions of voice therapy concepts are minimally available in the literature with no standard reporting framework and no clinical efficacy or effectiveness data. Thus, the proposed study will address these barriers. First, an asynchronous method will be developed that will impact both in-person and telepractice services by offering repeated learning opportunities in the client's environment. The method includes ecological momentary intervention (EMI) through a daily voice therapy practice app, server, and web portal that is flexible in its programming to meet the needs of the client, offers performance feedback, and charts results over time. Second, voice therapy concepts will be tested improving our knowledge about such concepts that facilitate successful client-centered outcomes for both prevention and treatment of voice problems. The participants in the study will be teachers who have a high prevalence of voice problems, impact the healthcare system when treatment is needed, and negatively affect students' learning abilities in the classroom when communicating with a voice problem. Third, the Rehabilitation Treatment Specification System (RTSS) framework will be used to describe the voice therapy concepts. The concepts include: training multiple voices to meet all the clients' vocal needs, defining voice qualities by the anatomy and physiology of the voice production system, generalizing voice targets into hierarchical speech tasks, and using "new" vs "other/old" voice to help the client become their own clinician. Vocally healthy student teachers and professional teachers with voice complaints will be randomized into one of four voice therapy conditions delivered via telepractice. Both groups of teachers are needed to assess the concepts for prevention and treatment. Condition 2, which fully represents the proposed voice therapy concepts, will be superior to the other three conditions, which do not fully represent the concepts, by demonstrating a greater decrease in client-reported primary outcome measures of the Voice Handicap Index-10 and factor 1 and 2 of the Vocal Fatigue Index. Secondary outcomes of acoustic measures, Borg Category Ratio-10 scales for vocal and mental effort, and voice therapy satisfaction surveys will also be investigated. The results will be useful at a practical level by advancing asynchronous telepractice and by improving efficacy of voice therapy concepts. In addition, the results will lay the groundwork for future studies involving development of EMI platforms in other areas of speech-language pathology and testing additional voice therapy concepts that facilitate successful client-centered outcomes.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (participant)
- Number of arms
- 4
| Arm | Type | Receives |
|---|---|---|
| Conversation Training Therapy | Experimental | Behavioral: Conversation Training Therapy |
| Global Voice Prevention and Therapy Model | Experimental | Behavioral: Global Voice Prevention and Therapy Model |
| Modified Conversation Training Therapy | Experimental | Behavioral: Modified Conversation Training Therapy |
| Modified Global Voice Prevention and Therapy Model | Experimental | Behavioral: Modified Global Voice Prevention and Therapy Model |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (3 listed)
- Vocally healthy student in a bachelor of education program with student teaching planned for spring
- Professional teacher who is currently working as a teacher with voice complaints, but has not sought help for the complaints
- Owner of either an android or iOS smartphone or tablet.
Key exclusion criteria (3 listed)
- Not a student teacher
- Not a professional teacher.
- Does not own a smartphone.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Conversation Training TherapyTraining clear speech in conversation with new vs old voice. Training will occur over four weekly synchronous telepractice sessions. Each session lasts 45-60 minutes. The ecological momentary intervention (EMI) platform (app, server, web portal) will reflect the goals of the intervention. Participants will use the EMI platform to practice voice targets three times a day. | Behavioural | Conversation Training Therapy |
| Global Voice Prevention and Therapy ModelTraining of four new voices (i.e., resonant voice in connected speech, falsetto for quiet talking, oral twang for talking over noise, and belt for healthy yelling) defined and trained by the anatomy and physiology of the system (i.e., Estill Voice Training's Figures). Training occurs in a bottom-up speech hierarchy with new vs other or old voice at each step. Additional methods are used in asynchronous telepractice to support the new voices during week 1 (e.g., vocal hygiene and education). Training will occur over three weekly synchronous telepractice sessions. Each session lasts 45-60 minutes. The ecological momentary intervention (EMI) platform (app, server, web portal) will reflect the goals of the intervention. Participants will use the EMI platform to practice voice targets three times a day. | Behavioural | Global Voice Prevention and Therapy Model |
| Modified Conversation Training TherapyTraining clear speech in conversation with no use of new vs old voice. Training will occur over four weekly synchronous telepractice sessions. Each session lasts 45-60 minutes. The ecological momentary intervention (EMI) platform (app, server, web portal) will reflect the goals of the intervention. Participants will use the EMI platform to practice voice targets three times a day. | Behavioural | Modified Conversation Training Therapy |
| Modified Global Voice Prevention and Therapy ModelTraining of a new resonant voice in connected speech defined and trained by the anatomy and physiology of the system (i.e., Estill Voice Training's Figures). Training occurs in a bottom-up speech hierarchy with no use of new vs old voice. Additional methods are used in asynchronous telepractice to support the new voices during week 1 (e.g., vocal hygiene and education). Training will occur over three weekly synchronous telepractice sessions. Each session lasts 45-60 minutes. The ecological momentary intervention (EMI) platform (app, server, web portal) will reflect the goals of the intervention. Participants will use the EMI platform to practice voice targets three times a day. | Behavioural | Modified Global Voice Prevention and Therapy Model |
Primary outcome
Change in Voice Handicap Index 10
Time frame: One time at pre & one time at post condition in fall (4 weeks between pre and post) and once weekly for 15 weeks in spring. Captured on day 4 in the PM for a 5 day period via the VoiceEvalU8 app.
The VHI-10 is a client reported outcome measure related to voice impact on quality of life across 10 questions. Each question is rated on a scale from 0-4 with 0 as never, 1 as almost never, 2 as sometimes, 3 as almost always, and 4 as always.
Change in Vocal Fatigue Index (VFI) factor 1 and 2
Time frame: One time at pre & one time at post condition in fall (4 weeks between pre and post) and once weekly for 15 weeks in spring. Captured on day 5 in the PM for a 5 day period via the VoiceEvalU8 app.
The VFI is a client reported outcome measure related to tiredness and avoidance of voice in factor 1 and physical voice discomfort in factor 2. Factor 1 has 11 questions and factor 2 has 5 questions. Each question is rated on a scale from 0-4 with 0 as never, 1 as almost never, 2 as sometimes, 3 as almost always, and 4 as always.
10 secondary outcomes
Change in Fundamental Frequency
Time frame: One time at pre & one time at post condition in fall (4 weeks between pre and post) and weekly for 15 weeks in spring. Captured twice a day in AM and PM sessions during a 5 day period via the VoiceEvalU8 app.
Change in Jitter%
Time frame: One time at pre & one time at post condition in fall (4 weeks between pre and post) and weekly for 15 weeks in spring. Captured twice a day in AM and PM sessions during a 5 day period via the VoiceEvalU8 app.
Change in noise-to-harmonic ratio
Time frame: One time at pre & one time at post condition in fall (4 weeks between pre and post) and weekly for 15 weeks in spring. Captured twice a day in AM and PM sessions during a 5 day period via the VoiceEvalU8 app.
Change in cepstral peak prominence
Time frame: One time at pre & one time at post condition in fall (4 weeks between pre and post) and weekly for 15 weeks in spring. Captured twice a day in AM and PM sessions during a 5 day period via the VoiceEvalU8 app.
Change in smoothed cepstral peak prominence
Time frame: One time at pre & one time at post condition in fall (4 weeks between pre and post) and weekly for 15 weeks in spring. Captured twice a day in AM and PM sessions during a 5 day period via the VoiceEvalU8 app.
Change in acoustic voice quality index
Time frame: One time at pre & one time at post condition in fall (4 weeks between pre and post) and weekly for 15 weeks in spring. Captured twice a day in AM and PM sessions during a 5 day period via the VoiceEvalU8 app.
Change in Borg Category Ratio (CR)10 scale for vocal effort
Time frame: One time at pre & one time at post condition in fall (4 weeks between pre and post) and weekly for 15 weeks in spring. Captured once a day in PM sessions during a 5 day period via the VoiceEvalU8 app.
Change in Borg Category Ratio (CR)10 scale for mental effort
Time frame: One time at pre & one time at post condition in fall (4 weeks between pre and post) and weekly for 15 weeks in spring. Captured once a day in PM sessions during a 5 day period via the VoiceEvalU8 app.
Student researcher (SR) voice therapy satisfaction surveys
Time frame: Collected immediately after intervention in the fall via Qualtrics online software.
Participant voice therapy satisfaction surveys
Time frame: Collected immediately after intervention in the fall via Qualtrics online software.
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 28 Aug 2024.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Elizabeth U Grillo, Ph.D. principal investigator
West Chester University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Conversation Training Therapy, Global Voice Prevention and Therapy Model and Modified Conversation Training Therapy in people with Voice Disorders, run by West Chester University of Pennsylvania at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: status not confirmed, as of the sponsor's last update on 28 Aug 2024. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact Elizabeth U Grillo, Ph.D. (6104362132, egrillo@wcupa.edu), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Change in Voice Handicap Index 10 (time frame: One time at pre & one time at post condition in fall (4 weeks between pre and post) and once weekly for 15 weeks in spring. Captured on day 4 in the PM for a 5 day period via the VoiceEvalU8 app.). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 28 Aug 2024.