ormative data of extended high frequency audiometry in normal hearing subjects with different aged groups

Completed

• Conditions: ormal hearing at frequency range 250-8000 Hz in age 18-60 yearsNormal hearing at frequency range 250-4000 Hz in age 61-70 years.; Normative data; Extended high frequency audiometry; Normal hearing subjects; Different aged groups

• Registration Number: TCTR20230923002
• Lead Sponsor: Faculty of Medicine, Khon Kaen University

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Study Start: 2023-09-23
• Study Completion: 2024-02-23
• Last Update Posted: 19 August 2024

Recruitment & Eligibility

• Status: Completed
• Sex: All
• Target Recruitment: 134

Inclusion Criteria

1. Thai population age 18-70 years
2. No hearing problems and communication disorders
3. No history middle ear diseases, dysfunction and surgery
4. No subjective tinnitus

Exclusion Criteria

1. Receiving chemotherapy (platinum based) and ototoxicity (aminoglycosides)
2. Occupational noise for more than 1 year
3. Family history about congenital hearing loss
4. Systemic diseases
5. Stroke, Chronic kidney disease and thalassemia with iron chelation
6. Have been diagnosed with diabetes millitus for more than 5 years
7. Have been diagnosed with hypertension for more than 3 years or less than 3 years but cannot control systolic <140 mmHg and diastolic < 90 mmHg
8. Smoking more than 15 packs of cigarettes per year and/or continuous smoking for more than 5 years
9. Drinking alcohol more than 2 glasses or approximately 400 ml per month
10. Hearing threshold more than 25 dB at any frequency (250-8000 Hz) and ear in age 18-60 years
11. Hearing threshold more than 25 dB at any frequency (250-4000 Hz) and ear in age 61-70 years
12. Type As, Ad, B and C tympanogram or Type A tympanogram with absent ipsilateral acoustic reflex at frequency 1000 Hz in any ear.
13. Ear diseases that obstacle to hearing test and interpreting test results

Study & Design

• Study Type: Observational
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
ormative data of extended high frequency audiometry in different aged groups At the beginning of study Hearing threshold at frequency 9,000-16,000 Hz

Secondary Outcome Measures

Name	Time	Method
Relationship between extended high frequency audiometry and high frequency distortion product otoacoustic emissions At the beginning of study DPOAEs amplitude (dB SPL), Hearing threshold at 9,000-16,000 Hz (dB HL)