Age Dependence of Audiometric Bone Conduction Threshold in Normal Hearing Subjects

Completed

• Conditions: Air Bone Gap

• Registration Number: NCT02493686
• Lead Sponsor: University of Zurich

Brief Summary

Examination of the bone conduction of persons which according to the pure tone audiogram have a normal age related hearing threshold in the air conduction.

Detailed Description

Not available

Study Timeline

• Study Start: 2014-09
• Study First Submitted: 2015-06-02
• Study First Submitted QC: 2015-07-06
• Study First Posted: 2015-07-09
• Primary Completion: 2015-08
• Status Verified: 2015-11
• Study Completion: 2020-11
• Last Update Submitted: 2020-11-12
• Last Update Posted: 2020-11-16

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 1093

Inclusion Criteria

• All pure tone audiograms recorded and available in the system from the beginning of measurement as follows:
• age related normal hearing threshold level with air conducted pure tone audiogram

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Exclusion Criteria

• age younger than 20 years
• if inclusion criteria not given

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Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Bone conduction Threshold/ Air bone gap in normal hearing subject in relation to age	1960 - 2014 (54 years)	from the initial establishment of the database until collection of the data

Secondary Outcome Measures

Name	Time	Method
Air bone gap changes in individuals who have received more than one Audiogram	1960 - 2014 (54 years)