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NCT00438334 · ClinicalTrials.gov registry record · NA
Real-World Benefit From Directional Hearing Aids
A NA study, sponsored by Vanderbilt University.
- Completed
- Registry status
- NA
- Development phase
- 105
- Enrollment target
NCT00438334: Completed NA study, sponsored by Vanderbilt University.
NCT00438334 is a NA study that has completed, run by Vanderbilt University. The registered enrollment target is 105 participants, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (93% lower). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT00438334, a NA study, has completed, sponsored by Vanderbilt University.
- COMPLETED
- Registry status
- NA
- Development phase
- 105 participants
- Enrollment target
Study Summary
Directional microphone hearing aids have been shown to provide benefit for individuals with hearing loss in a number of laboratory experiments. However, few studies have investigated the real-world, subject-reported benefit from these hearing aids, and even fewer have examined directional hearing aid benefit across varying degrees of hearing loss. This study will summarize data from a three-year, multi-faceted study of directional hearing aid benefit. Ninety four subjects were divided into three hearing loss groups (normal-to-moderate, mild-to-moderately-severe, and moderate-to-profound). These subjects were then fit with experimental hearing aids set to either directional or omnidirectional mode to determine if significant differences were present in hearing aid outcomes (both subjective and objective). Both subject and experimenter were blinded to the hearing aid settings. Following one month of use in each experimental setting, subjects completed: probe microphone measurements, speech understanding in noise testing, use questionnaires, subjective benefit scales, and satisfaction scales. At the conclusion of the study, subjects rated their preferences for the experimental settings in quiet, noise and overall. Both objective measures, as well as subjective data, were analyzed across hearing aid and hearing loss conditions.
Interventions
- DEVICE Programmable directional/omni-directional hearing aid
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 105 participants |
| Start Date | 2001-04 |
| Est. Completion | 2004-03 |
| Phase | NA |
What the finished NCT00438334 record still lists
NCT00438334 is an interventional study that assigns participants to a tested intervention. The registered 105 participants enrollment target is mid-sized for trials with a published cap, below the 1,404-participant average among 58,714 other NA trials with a reported enrollment target (93% lower).
The record links to 0 conditions, and to 1 intervention - of which Programmable directional/omni-directional hearing aid is the first listed.
NCT00438334 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT00438334 about?
NCT00438334 is a clinical study titled "Real-World Benefit From Directional Hearing Aids". Directional microphone hearing aids have been shown to provide benefit for individuals with hearing loss in a number of laboratory experiments. However, few studies have investigated the real-world, subject-reported benefit from these hearing aids, and even fewer have examined directional hearing ai...
What is the current status of trial NCT00438334?
This trial is currently completed. It is a NA study. The enrollment target is 105 participants. The study started on 2001-04. Estimated completion is 2004-03.
What interventions are being tested in trial NCT00438334?
The interventions under investigation include: Programmable directional/omni-directional hearing aid (DEVICE).
Who is sponsoring clinical trial NCT00438334?
This trial is sponsored by Vanderbilt University, which has 430 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT00438334's enrollment target sits among peer trials
105 834th of 2000 higher than 1,165 of 2,000 other NA trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other NA trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
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