CompletedNot Applicable

Use of Frequency Compression in Severe-profound Hearing Loss Adults

27 participantsStarted 2015-04

Plain-language summary

The purpose of this study is to investigate the functional benefits of frequency compression vs no frequency compression or fitted to hearing loss in severe-profound hearing impaired adults with high frequency hearing losses. Thus, assessing whether hearing aids for this patient population can be adapted to improve speech perception.

Who can participate

Age range

18 Years

Sex

ALL

See this in plain English?

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

Inclusion criteria

. Participants must be over 18 years of age- This study is looking at the use of frequency compression \& its effects of speech perception in adults.
. No ear surgery that would make it impossible to fit a hearing aid- To ensure limited confounding variables.
. No history of ear surgery within the last 12 months- To ensure limited confounding variables.
. No history of ear infection(s) within the last 6 months- To ensure no contraindications and limited confounding variables to testing.
. No otoscopic abnormality making it impossible to fit a hearing aid- To ensure no contraindications to testing.
. Bilateral severe-profound hearing impairment with air conduction thresholds \>71dBHL within the frequency range of 250Hz to 4 kHz- To analyse the effects of frequency compression on speech perception within this patient population.
. Post lingual deafness, with good spoken English- To ensure reliability of speech testing.
. Previous bilateral digital hearing aid experience (6+ months)- To ensure limited confounding variables.

Exclusion criteria

. Participants under the age of 18 years.

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

CHEAR Auditory Perception Test

Timeframe: 4 weeks post hearing aid fitting with adapted hearing aid feature

Adaptive Bamford-Kowal-Bench Test

Timeframe: 4 weeks post hearing aid fitting with adapted hearing aid feature

Trial details

NCT IDNCT04623112

SponsorUniversity College, London

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2015-06

View on ClinicalTrials.gov More Frequency Compression trials