Age Dependence of Audiometric Bone Conduction Threshold in Normal Hearing Subjects

November 12, 2020 updated by: University of Zurich
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.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Actual)

1093

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

16 years to 75 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Persons which have a normal hearing threshold level in the airconduction.

Description

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

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Cohort
  • Time Perspectives: Retrospective

What is the study measuring?

Primary Outcome Measures

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

Secondary Outcome Measures

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

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University of Zurich

Investigators

  • Study Director: Rudolf Probst, Prof., University Hospital Zurich, clinic othorhinolaryngology, 8091 Zurich

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

September 1, 2014

Primary Completion (Actual)

August 1, 2015

Study Completion (Actual)

November 1, 2020

Study Registration Dates

First Submitted

June 2, 2015

First Submitted That Met QC Criteria

July 6, 2015

First Posted (Estimate)

July 9, 2015

Study Record Updates

Last Update Posted (Actual)

November 16, 2020

Last Update Submitted That Met QC Criteria

November 12, 2020

Last Verified

November 1, 2015

More Information

Terms related to this study

Other Study ID Numbers

  • PR_16_09_2014

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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