{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,18]],"date-time":"2026-10-18T02:37:56Z","timestamp":1792291076246,"version":"4.4.0"},"reference-count":22,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2024,12,9]],"date-time":"2024-12-09T00:00:00Z","timestamp":1733702400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Faculty of Medicine, Khon Kaen University, Thailand","award":["IN67011"],"award-info":[{"award-number":["IN67011"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Audiology Research"],"abstract":"<jats:p>Background\/Objectives: Conventional audiometry assesses hearing in the frequency range of 250\u20138000 Hz, while humans can detect sounds from 20 to 20,000 Hz. Hearing sensitivity above 8000 Hz can be assessed through \u201cExtended high-frequency audiometry (EHFA)\u201d, which is useful for early detection and monitoring of hearing loss and counseling for tinnitus patients. Despite its usefulness, age significantly affects hearing sensitivity. Currently, there are no standard hearing thresholds in the EHF range categorized by age groups in Thailand. In this study, the aim was to determine normative EHFA data across different age groups in a healthy Thai population. Methods: This study included 134 participants aged 18\u201370 years, categorized into five age groups. All participants had normal hearing thresholds and type A tympanograms bilaterally. Following this, EHFA measurement was performed. Results: Across all age groups, there was an observed increase in median hearing thresholds as age increased. In comparison, no significant difference in median hearing thresholds was found between individuals aged 18\u201330 and &gt;30\u201340 years. However, those over 40 years had significantly higher median thresholds across all frequencies compared to those under 40 years (p &lt; 0.05). Based on these findings, we propose two new subgroups of 18\u201340 years and &gt;40\u201370 years. Median hearing thresholds for those aged 18\u201340 was \u226420 dB HL across most frequencies, except at 16,000 Hz (30 dB HL). In the &gt;40\u201370 age group, thresholds ranged from 20 dB HL at 9000 Hz to 70 dB HL at 14,000 and 16,000 Hz. However, no significant differences were found in hearing thresholds between sexes and ear sides. Conclusions: In this study, normative EHFA data were established for healthy Thai adults, appropriately divided into two groups (18\u201340 and &gt;40\u201370 years) for clinical use. Further studies with more participants per age group are also needed to validate the results.<\/jats:p>","DOI":"10.3390\/audiolres14060089","type":"journal-article","created":{"date-parts":[[2024,12,10]],"date-time":"2024-12-10T11:17:20Z","timestamp":1733829440000},"page":"1084-1092","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Normative Data of Extended High Frequency Audiometry in Normal Hearing Subjects with Different Aged Groups"],"prefix":"10.3390","volume":"14","author":[{"given":"Kittiphorn","family":"Luengrungrus","sequence":"first","affiliation":[{"name":"Department of Otorhinolaryngology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Panida","family":"Thanawirattananit","sequence":"additional","affiliation":[{"name":"Department of Otorhinolaryngology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Watchareporn","family":"Teeramatwanich","sequence":"additional","affiliation":[{"name":"Department of Otorhinolaryngology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,12,9]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1944","DOI":"10.1121\/10.0009766","article-title":"Extended High-Frequency Audiometry in Research and Clinical Practice","volume":"151","author":"Lough","year":"2022","journal-title":"J. Acoust. Soc. Am."},{"key":"ref_2","first-page":"167","article-title":"Applications of Extended High-Frequency Audiometry: A Narrative Review","volume":"30","author":"Majidpour","year":"2021","journal-title":"Audit. Vestib. Res."},{"key":"ref_3","unstructured":"Durrant, J.D., Campbell, K., Fausti, S., Jacobson, G., Lonsbury-Martin, B.L., and Linda, L. (2009). American Academy of Audiology Position Statement and Clinical Practice Guidelines: Ototoxicity Monitoring Task Force Members, American Academy of Audiology."},{"key":"ref_4","unstructured":"(2004). Acoustics\u2014Reference Zero for the Calibration of Audiometric Equipment\u2014Part 8: Reference Equivalent Threshold Sound Pressure Levels for Pure Tones and Circumaural Earphones (Standard No. ISO 389-8:2004(en)). Available online: https:\/\/www.iso.org\/obp\/ui\/#iso:std:iso:389:-8:ed-1:v1:en."},{"key":"ref_5","unstructured":"(2006). Acoustics\u2014Reference Zero for the Calibration of Audiometric Equipment\u2014Part 5: Reference Equivalent Threshold Sound Pressure Levels for Pure Tones in the Frequency Range 8 kHz to 16 kHz (Standard No. ISO 389-5:2006). Available online: https:\/\/www.iso.org\/standard\/40535.html."},{"key":"ref_6","unstructured":"(2017). Acoustics\u2014Statistical Distribution of Hearing Thresholds Related to Age and Gender (Standard No. ISO 7029:2017). Available online: https:\/\/www.iso.org\/standard\/42916.html."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"52","DOI":"10.1186\/s40463-021-00534-w","article-title":"Extended High-Frequency Audiometry in Healthy Adults with Different Age Groups","volume":"50","author":"Wang","year":"2021","journal-title":"J. Otolaryngol.-Head Neck Surg."},{"key":"ref_8","first-page":"565","article-title":"Extended High-Frequency Audiometry: Hearing Thresholds in Adults. Eur. Arch","volume":"280","year":"2022","journal-title":"Oto-Rhino-Laryngology"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"16","DOI":"10.1250\/ast.32.16","article-title":"Air Conduction Hearing Thresholds of Young and Older Japanese Adults for Pure Tones from 125 Hz to 16 kHz","volume":"32","author":"Kurakata","year":"2011","journal-title":"Acoust. Sci. Technol."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"1821","DOI":"10.1121\/1.4894719","article-title":"Reference Hearing Thresholds in an Extended Frequency Range as a Function of Age","volume":"136","author":"Jilek","year":"2014","journal-title":"J. Acoust. Soc. Am."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"531","DOI":"10.3109\/14992027.2014.893375","article-title":"Extended High-Frequency (9\u201320 kHz) Audiometry Reference Thresholds in 645 Healthy Subjects","volume":"53","author":"Trinidad","year":"2014","journal-title":"Int. J. Audiol."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"737","DOI":"10.1080\/13102818.2016.1170631","article-title":"Hearing Impairment in Middle-Aged Patients with Diabetes","volume":"30","author":"Ozkurt","year":"2016","journal-title":"Biotechnol. Biotechnol. Equip."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"98","DOI":"10.1186\/s43163-021-00162-1","article-title":"Hearing Loss and Hypertension: Exploring the Linkage","volume":"37","author":"Babarinde","year":"2021","journal-title":"Egypt. J. Otolaryngol."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"NP147","DOI":"10.1177\/0145561319872166","article-title":"Effects of Smoking on the Auditory System: Is There a Gender Difference?","volume":"100","author":"Demir","year":"2021","journal-title":"Ear Nose Throat J."},{"key":"ref_15","first-page":"1","article-title":"Hearing Status Among Smokers Using Extended High Frequency Pure Tone Audiometry (EHFPTA) and Distortional Product of Otoacoustic Emissions (DPOAE)","volume":"1","author":"Ali","year":"2019","journal-title":"Borneo Int. J."},{"key":"ref_16","unstructured":"Katz, J. (2015). Basic Tests and Procedures. Handbook of Clinical Audiology, Wolters Kluwer Health. [7th ed.]."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"720","DOI":"10.1080\/14992027.2022.2089741","article-title":"Re-Estimated Normal Hearing Threshold Levels for Pure Tones Using the Calculation Procedure of ISO 7029:2017","volume":"62","author":"Kurakata","year":"2023","journal-title":"Int. J. Audiol."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"107922","DOI":"10.1016\/j.heares.2020.107922","article-title":"Extended High Frequency Hearing and Speech Perception Implications in Adults and Children","volume":"397","author":"Hunter","year":"2020","journal-title":"Hear. Res."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"215","DOI":"10.1016\/S1808-8694(15)31069-7","article-title":"Analisys of High Frequency Auditory Thresholds in Individuals Aged between 18 and 29 Years with No Otological Complaints","volume":"73","author":"Tomita","year":"2007","journal-title":"Braz. J. Otorhinolaryngol."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"315","DOI":"10.1097\/AUD.0b013e31823d7917","article-title":"Behavioral Hearing Thresholds between 0.125 and 20 KHz Using Depth-Compensated Ear Simulator Calibration","volume":"33","author":"Lee","year":"2012","journal-title":"Ear Hear."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"110686","DOI":"10.1016\/j.ijporl.2021.110686","article-title":"Extended High Frequency Audiometry Thresholds in Healthy School Children","volume":"144","author":"Hemmingsen","year":"2021","journal-title":"Int. J. Pediatr. Otorhinolaryngol."},{"key":"ref_22","doi-asserted-by":"crossref","unstructured":"Gelfand, S.A. (2016). Behavioral Tests for Audiological Diagnosis. Essentials of Audiology, Thieme Medical Publishers, Inc.. [4th ed.].","DOI":"10.1055\/b-006-161125"}],"container-title":["Audiology Research"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2039-4349\/14\/6\/89\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T16:50:07Z","timestamp":1760115007000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2039-4349\/14\/6\/89"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,12,9]]},"references-count":22,"journal-issue":{"issue":"6","published-online":{"date-parts":[[2024,12]]}},"alternative-id":["audiolres14060089"],"URL":"https:\/\/doi.org\/10.3390\/audiolres14060089","relation":{},"ISSN":["2039-4349"],"issn-type":[{"value":"2039-4349","type":"electronic"}],"subject":[],"published":{"date-parts":[[2024,12,9]]}}}