Apple Hearing Study
← catalyst calendarNCT04172766 · readout in 1,108 d
Sponsored by Apple Inc. (industry) · AAPL — their whole pipeline →. With World Health Organization.
Phase
—
Status
Active, not recruiting
Study type
Observational
Enrollment
300,000estimated
Sites
1
Country
United States
Every value on this page is a field the sponsor filed with ClinicalTrials.gov, reproduced. Dates are their own estimates, revised as a study runs, unless the registry marks them actual. sources →
Source: ClinicalTrials.gov, retrieved 2026-08-19
Dates
each axis at the precision it was filed, with the registry's own basis| Date | Filed | Basis | What it is |
|---|---|---|---|
| Start | 2019-11-14 | actual | When the study began enrolling |
| Primary completion | 2029-08-31 | estimated | The date the last participant is measured for the primary outcome — the readout window |
| Study completion | Dec 2029 | estimated | The whole study's end, after follow-up |
| First posted | 2019-11-21 | actual | When this record first appeared on the registry |
| Results posted | — | When the sponsor posted results to the registry | |
| Record updated | 2026-03-19 | actual | The sponsor's own last edit to this record — every projection above is as current as this date |
What it studies
Conditions
- Hearing Loss, Noise-Induced
- Hearing Loss
- Tinnitus
Primary outcomes
what the primary-completion date above is the date OFHeadphone audio level patterns
measured From enrollment to the end of followup at 10 years
Difference in Headphone Audio Level patterns
measured From enrollment to the end of followup at 10 years
Association between Headphone Audio Level patterns and Pure Tone Audiometry
measured From enrollment to the end of followup at 10 years
Association between Headphone Audio Level patterns and Speech in Noise
measured From enrollment to the end of followup at 10 years
Association between Headphone Audio Level patterns and tinnitus matching
measured From enrollment to the end of followup at 10 years
Association between general health and individual characteristics and sound levels and/or audiometry tasks
measured From enrollment to the end of followup after 10 years
Change from baseline to final audiometry
measured From enrollment to the end of followup after 10 years
Change from baseline in abbreviated Pure Tone Audiometry following high headphone audio level notification
measured From enrollment to the end of followup after 10 years
Headphone Audio Level association with baseline survey questions
measured From enrollment to the end of followup after 10 years
Baseline Audiometry association with baseline survey questions
measured From enrollment to the end of followup after 10 years
Final Audiometry association with end-of-study survey questions
measured At the end of followup after 10 years
Change in survey questions
measured From enrollment to the end of followup after 10 years
Association between hearing ability and changes in hearing health and related health conditions
measured From enrollment to the end of followup after 10 years
Descriptive assessment of participant use and experience
measured From enrollment to the end of followup after 10 years
Publications
- PMID 35364926 — reports results
Linked on the registry record. A “linked by the registry” entry is NLM's own automated PubMed match, not a claim by the sponsor that the paper reports this study.
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