Study type: Epidemiological study (observational study)

Occupational and residential exposure to electromagnetic fields and risk of brain tumors in adults: a case-control study in Gironde, France. epidem.

Published in: Int J Cancer 2011; 129 (6): 1477-1484

Aim of study (acc. to author)

A case-control study was conducted in France to investigate the possible association between residential and occupational exposure to electromagnetic fields and the risk of brain tumors in adults.

Endpoint/type of risk estimation

Type of risk estimation: (odds ratio (OR))

Exposure

Assessment

Exposure groups

Group Description
Reference group 1 occupational exposure to electromagnetic fields: no
Group 2 occupational exposure to electromagnetic fields: yes
Reference group 3 occupational exposure to extremely low frequency electromagnetic fields: no
Group 4 occupational exposure to extremely low frequency electromagnetic fields: yes
Reference group 5 occupational exposure to radiofrequency electromagnetic fields: no
Group 6 occupational exposure to radiofrequency electromagnetic fields: yes
Reference group 7 residential exposure: proximity to power lines: > 100 m
Group 8 residential exposure: proximity to power lines: ≤ 100 m
Reference group 9 exposure to mobile phone: no
Group 10 exposure to mobile phone: yes

Population

Case group

Control group

Study size

Cases Controls
Eligible 315 642
Participants 221 442
Participation rate 70 % 69 %
Other:

105 patients with glioma, 67 with meningioma, 33 with acoustic neurinoma, 7 with brain lymphoma, and 9 with other brain tumor types

Statistical analysis method: (adjustment: )

Conclusion (acc. to author)

A nonsignificant increase in risk of brain tumor was found for occupational exposure to electromagnetic fields. A significant increase in risk of menigioma was observed in the subgroup of extremely low frequency occupational exposure.
A nonsignificant increased risk of brain tumor was found in subjects living in the vicinity of power lines in a distance of 100 m or less, and this increase was higher in the subgroup of meningioma.
No association was observed between mobile phone use and the risk of brain tumors.
The authors concluded that occupational or residential exposure to extremely low frequency electromagnetic fields may play a role in the occurrence of meningioma.

Study funded by

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