Epidemiological study (observational study)

Meta-analysis of mobile phone use and intracranial tumors epidem.

By: Lahkola A, Tokola K, Auvinen A

Published in: Scand J Work Environ Health 2006; 32 (3): 171-177

Aim of study (acc. to author)

A meta-analysis was performed to evalutate the risk for intracranial tumors in relation to mobile phone use. Following twelve studies were included: Hardell et al. (Sweden, 1999), Muscat et al. (USA, 2000), Inskip et al. (USA, 2001), Johansen et al. (Denmark, 2001), Auvinen et al. (Finland, 2002), Hardell et al. (Sweden, 2002), Muscat et al. (USA, 2002), Lönn et al. (Sweden, 2005), Christensen et al. (Denmark, 2005), Schoemaker et al. (Nordic countries, 2005), Hardell et al. (Sweden, 2005), and Hardell et al. (Sweden, 2005).

Further details

Eleven of the studies were case-control studies, one study was a cohort study (Johansen et al., 2001).

Endpoint/type of risk estimation

brain tumor: glioma, meningioma and acoustic neuroma

Type of risk estimation:

incidence

(odds ratio (OR))

Exposure

- mobile communications
- analog mobile phone
- digital mobile phone
- GSM
- NMT
- personal

Assessment

list: telephone company records
questionnaire
interview

Exposure groups

Group	Description
Reference group 1	unexposed
Group 2	mobile phone use: ever
Group 3	mobile phone use: at least 2 - 5 years

Population

Group:
- men
- women
Characteristics: intracranial tumor
Observation period: 1982 - 2004
Study location: Denmark, Finland, Norway, Sweden, USA

Study size

Type	Value
Total	2,870

Other:

2870 cases total: glioma: 1352 cases, meningioma: 527 cases, acoustic neuroma: 605 cases

Results (acc. to author)

748 cases used mobile phones for at least 2 - 5 years.
No increased pooled risk for all intracranial tumors related to mobile phone use was found. The results of this meta-analysis indicate that the use of mobile phones for up to 5 years does not increase the risk for intracranial tumors.

Study funded by

not stated/no funding

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