The Apple Hearing Study is a partnership between the University of Michigan and Apple to study sound exposure and its impact on hearing health. This groundbreaking study will advance the understanding of how hearing could be impacted over time by exposure to sound at certain levels. The investigators will measure headphone and environmental sound exposures over time among participants, and determine how these exposures impact hearing and stress levels. US residents who own an iPhone, download the Apple Research app and consent to participate will be randomly assigned to two groups, one with a "Basic" user interface in the Research app, and one with an "Advanced" user interface. Users in the "Advanced" group will receive additional information about their exposures and be given additional surveys and hearing tests based on their music and environmental sound exposures. The study will provide investigators with a better understanding of listening behavior and its overall impact on hearing health. This information will in turn help guide public health policy and prevention programs designed to protect and promote hearing health in the US and globally.
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Headphone audio level patterns
Timeframe: From enrollment to the end of followup at 10 years
Difference in Headphone Audio Level patterns
Timeframe: From enrollment to the end of followup at 10 years
Association between Headphone Audio Level patterns and Pure Tone Audiometry
Timeframe: From enrollment to the end of followup at 10 years
Association between Headphone Audio Level patterns and Speech in Noise
Timeframe: From enrollment to the end of followup at 10 years
Association between Headphone Audio Level patterns and tinnitus matching
Timeframe: From enrollment to the end of followup at 10 years
Association between general health and individual characteristics and sound levels and/or audiometry tasks
Timeframe: From enrollment to the end of followup after 10 years
Change from baseline to final audiometry
Timeframe: From enrollment to the end of followup after 10 years
Change from baseline in abbreviated Pure Tone Audiometry following high headphone audio level notification
Timeframe: From enrollment to the end of followup after 10 years
Headphone Audio Level association with baseline survey questions
Timeframe: From enrollment to the end of followup after 10 years
Baseline Audiometry association with baseline survey questions
Timeframe: From enrollment to the end of followup after 10 years
Final Audiometry association with end-of-study survey questions
Timeframe: At the end of followup after 10 years
Change in survey questions
Timeframe: From enrollment to the end of followup after 10 years
Association between hearing ability and changes in hearing health and related health conditions
Timeframe: From enrollment to the end of followup after 10 years
Descriptive assessment of participant use and experience
Timeframe: From enrollment to the end of followup after 10 years