Study type: Epidemiological study (observational study)

Risk of childhood acute lymphoblastic leukaemia following parental occupational exposure to extremely low frequency electromagnetic fields. epidem.

Published in: Br J Cancer 2011; 105 (9): 1409-1413

Aim of study (acc. to author)

A case-control study was conducted in Australia to examine the risk of acute lymphoblastic leukemia in the children of parents with occupational exposure to extremely low frequency electromagnetic fields.

Endpoint/type of risk estimation

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

Exposure

Assessment

Exposure groups

Group Description
Reference group 1 maternal exposure: no exposure
Group 2 maternal exposure any time before birth: moderate/substantial
Group 3 maternal exposure in jobs 2 years before birth: any exposure
Group 4 maternal exposure in jobs 1 year before birth: any exposure
Group 5 maternal exposure up to 1 year after birth: low
Group 6 maternal exposure up to 1 year after birth: moderate/substantial
Reference group 7 paternal exposure: no exposure
Group 8 paternal exposure any time before birth: moderate/substantial
Group 9 paternal exposure in jobs 1 year before birth: any exposure

Population

Case group

Control group

Study size

Cases Controls
Eligible 568 2,947
Participants 416 2,071
Other:

379 case and 854 control mothers and 328 case and 748 control fathers completed an occupational history.

Statistical analysis method: (adjustment: )

Conclusion (acc. to author)

There was no association between maternal or paternal occupational exposure to extremely low frequency electromagnetic fields to any time before the birth and the risk of childhood acute lymphoblastic leukemia.

Study funded by

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