Table 4 Relative risk estimates (95% confidence interval) by magnetic-field category, and with magnetic-field exposure as a continuous variable

From: Childhood cancer and magnetic fields from high-voltage power lines in England and Wales: a case–control study

 

Categorical analysis. Reference level: < 0.1  μ T

 
 

Magnetic field ( μ T)

Continuous analysis

Diagnostic group

0.1 to <0.2

0.2 to <0.4

⩾0.4

RR per 0.2  μ T

Leukaemias

2.00 (0.50–7.99)

0 case/ 2 controls

2.00 (0.18–22.04)

1.14 (0.57–2.32)

CNS/brain tumours

0.50 (0.09–2.73)

1 case/ 0 control

0.33 (0.03–3.20)

0.80 (0.43–1.51)

Other cancers

0.33 (0.07–1.65)

1.00 (0.14–7.10)

5.00 (0.58–42.80)

1.34 (0.84–2.15)

  1. Abbreviation: RR=relative risk.
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