Colon, Diana C. and Verdugo-Raab, Ulla and Alvarez, Carmelo P. and Steffens, Thomas and Marcrum, Steven C. and Kolb, Stefanie and Herr, Caroline and Twardella, Dorothee (2016) Early Indication of Noise-induced Hearing Loss from PMP Use in Adolescents: A Cross-Sectional Analysis. NOISE & HEALTH, 18 (85). 288-U138. ISSN 1463-1741, 1998-4030
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Context: Distortion product otoacoustic emissions (DPOAEs) may indicate preclinical noise-induced hearing loss (NIHL) in adolescents from unsafe personal music player (PMP) use. Aims: The objective, therefore, was to observe preclinical signs of NIHL in 9 th grade adolescents with clinically normal hearing by comparing DPOAE signals between different levels of A-weighted equivalent PMP exposure. Settings and Design: Subjects were recruited from all secondary-level schools located in the city of Regensburg, Germany during two academic years 2009/2010 and 2010/2011. Subjects and Methods: A-weighted equivalent sound pressure levels (SPLs) for a 40-hour work week (LAeq. 40h) were estimated from questionnaire responses on output and duration of PMP use of the previous week. Subjects were then categorized into four levels of exposure: < 80, 80-85, > 85 to < 90, and >= 90 A-weighted Decibel [dB(A)]. DPOAE signals were collected by trained audiological staff, applying a standard optimized protocol, at the Department of Otorhinolaryngology of the University Hospital Regensburg. Statistical Analysis Used: Mean DPOAE signals were compared between levels by unpaired t test. Novel linear regression models adjusting for other leisure noise exposures and with outcome variables DPoutcome and 4 kilo Hertz (kHz) DPOAEs estimated effects between levels. Results: A total of 1468 subjects (56% female, mostly aged 15 or 16 years) were available for analysis. Comparison of DPOAE means by PMP exposure typically showed no greater than 1 dB difference between groups. In fact, comparisons between >= 90 dB(A) and < 80 dB(A) presented the least differences in magnitude. Both DPoutcome and 4kHz linear regression models presented a weak association with the 4-level PMP exposure variable. An expected dose-response to PMP exposure was not observed in any analyses. Conclusions: DPOAE signal strength alone cannot indicate preclinical NIHL in adolescents.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | HAIR CELL LOSS; OTOACOUSTIC EMISSIONS; THRESHOLD SHIFTS; PREVALENCE; MUSIC; EXPOSURE; HEALTH; OHRKAN; RISK; Adolescent; distortion product otoacoustic emissions; noise-induced hearing loss; ohrkan study; personal music players |
| Subjects: | 600 Technology > 610 Medical sciences Medicine |
| Divisions: | Medicine > Lehrstuhl für Hals-Nasen-Ohren-Heilkunde |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 12 Apr 2019 12:13 |
| Last Modified: | 12 Apr 2019 12:13 |
| URI: | https://pred.uni-regensburg.de/id/eprint/3987 |
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