{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,22]],"date-time":"2026-04-22T01:53:16Z","timestamp":1776822796812,"version":"3.51.2"},"reference-count":37,"publisher":"Public Library of Science (PLoS)","issue":"9","license":[{"start":{"date-parts":[[2023,9,14]],"date-time":"2023-09-14T00:00:00Z","timestamp":1694649600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100006356","name":"University of Southern Denmark","doi-asserted-by":"crossref","id":[{"id":"10.13039\/501100006356","id-type":"DOI","asserted-by":"crossref"}]},{"name":"Odense University Hospital"}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS ONE"],"abstract":"<jats:sec id=\"sec001\">\n<jats:title>Objective<\/jats:title>\n<jats:p>To evaluate two user-operated audiometry methods, the AMTAS<jats:sup>TM<\/jats:sup> PC-based audiometry and a low-cost smartphone audiometry research application (R-App).<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sec002\">\n<jats:title>Design<\/jats:title>\n<jats:p>A repeated-measures within-subject study design was used to compare both user-operated methods to traditional manual audiometry and to evaluate test-retest reliability of each method.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sec003\">\n<jats:title>Study sample<\/jats:title>\n<jats:p>58 subjects were recruited in the study of which 83 ears had normal hearing thresholds and 33 ears had hearing loss (pure-tone average &gt; 25 dB HL). Average age of participants was 44.8 years, with an age range of 11\u201385.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sec004\">\n<jats:title>Results<\/jats:title>\n<jats:p>Standard deviation of absolute differences ranged between 3.9\u20136.9 dB on AMTAS<jats:sup>TM<\/jats:sup> and 4.5\u20136.8 dB on the R-App. The highest variability was found at the 8000 Hz frequency (R-App and AMTAS<jats:sup>TM<\/jats:sup> test) and 3000 Hz frequency (AMTAS<jats:sup>TM<\/jats:sup> retest). Evaluation of test-retest reliability of AMTAS<jats:sup>TM<\/jats:sup> and R-App showed SD of absolute differences ranging between 3.5\u20135.8 dB and 3.1\u20135.0 dB, respectively. The mean threshold difference between test and retest was within \u00b11.5 dB on AMTAS<jats:sup>TM<\/jats:sup> and \u00b11 dB on the R-App.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sec005\">\n<jats:title>Conclusion<\/jats:title>\n<jats:p>Accuracy of AMTAS<jats:sup>TM<\/jats:sup> and the R-App was within acceptable limits for audiometry and comparable to traditional manual audiometry on all tested frequencies (250\u20138000 Hz). Evaluation of test-retest reliability showed acceptable variation on both AMTAS<jats:sup>TM<\/jats:sup> and R-App. Both user-operated methods could be reliably performed in a quiet non-soundproofed environment.<\/jats:p>\n<\/jats:sec>","DOI":"10.1371\/journal.pone.0291412","type":"journal-article","created":{"date-parts":[[2023,9,14]],"date-time":"2023-09-14T17:31:30Z","timestamp":1694712690000},"page":"e0291412","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":4,"title":["AMTASTM and user-operated smartphone research application audiometry\u2014An evaluation study"],"prefix":"10.1371","volume":"18","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2279-2091","authenticated-orcid":true,"given":"Chris Bang","family":"S\u00f8rensen","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Thomas Bording","family":"Adams","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9917-9837","authenticated-orcid":true,"given":"Ellen Raben","family":"Pedersen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5134-8950","authenticated-orcid":true,"given":"Jacob","family":"Nielsen","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jesper Hvass","family":"Schmidt","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"340","published-online":{"date-parts":[[2023,9,14]]},"reference":[{"key":"pone.0291412.ref001","unstructured":"WHO. 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