Table of Contents
ISRN Public Health
Volume 2012 (2012), Article ID 241967, 7 pages
http://dx.doi.org/10.5402/2012/241967
Clinical Study

Acute, Repeated Exposure to Mobile Phone Noise and Audiometric Status of Young Adult Users in a University Community

1Department of Environmental Health Sciences, Faculty of Public Health, University of Ibadan, Ibadan, Nigeria
2Department of Environmental and Occupational Health, School of Public Health, University of Medicine & Dentistry of New Jersey (UMDNJ), Piscataway, NJ 08854, USA
3New Jersey Safe Schools Program, Center for School and Community-Based Research and Education, School of Public Health, UMDNJ, New Brunswick, NJ 08903-2688, USA
4Environmental and Occupational Health Sciences Institute, Robert Wood Johnson Medical School, UMDNJ and Rutgers University, Piscataway, NJ 08854, USA
5Department of Ear, Nose and Throat, University College Hospital, Ibadan, Nigeria

Received 6 August 2012; Accepted 26 August 2012

Academic Editors: M. Askarian and O. Zurriaga

Copyright © 2012 Godson R. E. E. Ana et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Background. Exposure to noise from mobile devices is suspected to affect hearing. Data are limited, particularly in less developed countries. We assessed noise levels from mobile phones and user audiometric status at University of Ibadan, Nigeria, in an initial cross-sectional study. Methods. Fifty-eight staff and 45 young adult students owning mobile phones were selected. A pretested questionnaire assessed demographics, phone attributes, and predominant ear used for making and receiving calls. Noise was measured in A-weighted decibels. Pure tone audiometry was conducted at varying frequencies. Statistics computed included Chi-square and t-tests. Results. Certain phone brands used by students were commonly reported. More utilized right ears to make or receive calls. Mean reported mobile phone use duration by students was years, lower than among staff, years ( ). There were differences in use of head phones (22.2%, 12.1%) and speakers (51.1%, 15.5%) by students and staff, respectively ( ). Mean measured noise levels of phones when ringing, per user settings, were high  dBA (students) and  dBA (staff). Audiometry suggested 22.2% students and 28.0% staff had some evidence of hearing impairment. Conclusions. Mobile phones noise levels were high, but exposures though frequent were of short duration. Larger, longitudinal studies are needed on phone use and hearing impairment.