ID Number		1770
Study Type		Human / Provocation
Model		Mobile phone use and effects on audiometric tests, including OAE and ABR
Details		Volunteers with normal hearing (n = 98) underwent hearing evaluations (audiometry, tympanometry, otoacoustic emission and auditory brain stem evoked response) at King Chulanlongkorn Hospital and correlations were made with mobile phone use (assessed by questionnaire). The authors report average time of mobile phone use was 32.54 +/- 27.64 months for 26.31 +/- 30.91 minutes per day (range 3-180 minutes per day). Regarding the predominant side of use, 57 subjects reported right and 41 reported left. Although no difference was reported in comparing the ipsilateral and contralateral ears using various audiomietry assays when all volunteers were evaluated together, a significant difference was reported when the top 8 heaviest users in the volunteer group were evaluated (ipsilateral vs. contralateral audiometric performance)
Findings		Effects
Status		Completed With Publication
Principal Investigator		Chulalongkorn Univ, Bangkok, Thailand
Funding Agency		Private/Instit.
Country		THAILAND
References		Kerekhanjanarong, V et al. J Med Assoc Thai, (2005) 88 suppl 4:S231-S234
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