Epidemiological Study (case-control study)
Cellular telephone use and risk of acoustic neuroma. epidemiol.
By: Christensen HC, Schüz J, Kosteljanetz M, Poulsen HS, Thomsen J, Johansen C
Published in: Am J Epidemiol 2004; 159 (3): 277 - 283 (full-text
| Journal website
Aim of study (according to author)
The possible association between cellular telephone use and the risk of acoustic neuroma was investigated in this Danish nationwide population-based case-control study.
The study is part of the INTERPHONE project. Regular use of mobile phone was defined as more than one call per week for 6 months or more.
Endpoint/type of risk estimation
Estimate of incidence
by odds ratio
- mobile phone, personal exposure
- type of exposure: personal
- assessment by interview (regular use, number of different cell phones, number of calls, use of handset and handsfree set)
- assessment by calculation (lifetime number of calls, lifetime number of hours of use)
groups of exposure:
|Reference group 1: || never used or less than once per week for six month |
|group 2: || use regularly |
|group 3: || time since first regular use never or rarely used < 1 year |
|group 4: || time since first regular use 1-4 year |
|group 5: || time since first regular use ≥ 5 year |
|group 6: || time since first regular use 5-9 year |
|group 7: || time since first regular use ≥ 10 year |
|group 8: || first telephone operating system: no information |
|group 9: || first telephone operating system: analogue |
|group 10: || first telephone operating system: digital |
|group 11: || lifetime cumulative number of calls ≤ 2975 |
|group 12: || lifetime cumulative number of calls > 2975-11500 |
|group 13: || lifetime cumulative number of calls > 11500 |
|group 14: || lifetime cumulative hours of use ≤ 167.5 |
|group 15: || lifetime cumulative hours of use > 167.5-654 |
|group 16: || lifetime cumulative hours ofuse > 654 |
|group 17: || cumulative use before diagnosis < 5 years |
|group 18: || cumulative use before diagnosis ≥ 5 years (≤ 81.7 hours) |
|group 19: || cumulative use before diagnosis ≥ 5 years (> 81.7 hours) |
- case group
men and women, aged from 20 to 69 years
diagnosis: acoustic neuroma, primarily verified by magnetic resonance imaging
observation period: September 2000 - August 2002
study location: Denmark
source of data: Department of Otolaryngology-Head and Neck Surgery, Gentofte Hospital, University of Copenhagen, Denmark
exclusion criteria: deceased
- control group
matching: sex, age, 1:2 (case:control)
Further parameters acquired by interview (hearing loss, tinnitus
, education level)
|Study size || cases || controls |
|number eligible ||141||332|
|number contacted ||106||214|
|number participating ||106||212|
: socioeconomic status
Statistical analysis using conditional logistic regression (adjusted for age, sex, residential area, education, marital status, use of hands-free device)
Results/conclusion (according to author)
The results showed no evidence for an association between cellular telephone use and the risk of acoustic neuroma.
(Study character: epidemiological study, case-control study)
Study funded by
- Danish Cancer Society
- European Union (EU)/European Commission
- International Union against Cancer (UICC; Union Internationale Contre le Cancer), Switzerland
Published comments on this article:
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Glossary: acoustic neuroma
, brain tumor
, case-control study
, cellular telephone
, conditional logistic regression
, Interphone project
, magnetic resonance imaging
, socioeconomic status
, tinnitusExposure: mobile phone
, personal exposure
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