Study type: Epidemiological study (observational study)

Exposure to power-frequency magnetic fields and the risk of childhood cancer epidem.

Published in: Lancet 1999; 354 (9194): 1925-1931

Aim of study (acc. to author)

The relation between all childhood cancer and exposure to power-frequency magnetic fields was investigated in a population-based case-control study in UK.

Further details

The study is the EMF part of the UK Childhood Cancer Study (UKCCS) in which five hypotheses of potential causes for childhood cancers were tested.
Measurements were taken in a residence if the child lived one year prior diagnosis at the current address. Further results based on calculations of the magnetic field exposure are published in publication 4760.

Endpoint/type of risk estimation

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



Exposure groups

Group Description
Reference group 1 average mean of magnetic field: < 0.1 µT
Group 2 average mean of magnetic field: < 0.1 - 0.2 µT
Group 3 average mean of magnetic field: ≥ 0.2 µT
Group 4 average mean of magnetic field: 0.2 - < 0.4 µT
Group 5 average mean of magnetic field: ≥ 0.4 µT


Case group

Control group

Study size

Cases Controls
Eligible 3,938 7,629
Participants 2,423 2,416
Evaluable 2,226 2,226
Statistical analysis method: (adjustment: )

Results (acc. to author)

2.3 % of participants were exposed to magnetic fields higher than 0.2 µT.
No increased risk for childhood cancer and the exposure to magnetic fields associated with electricity supply was found.

Study funded by

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