Age Dependence of Audiometric Bone Conduction Threshold in Normal Hearing Subjects

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT02493686

Enrollment

1093

Registered

2015-07-09

Start date

2014-09-30

Completion date

2020-11-30

Last updated

2020-11-16

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Air Bone Gap

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.

Interventions

DIAGNOSTIC_TESTaudiogram

hearing test

Study design

Observational model

COHORT

Time perspective

RETROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

20 Years to 79 Years

Healthy volunteers

Yes

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

Exclusion criteria

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

Design outcomes

Primary

Measure	Time frame	Description
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

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

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026