TABLE A5-6 Residential Electric-and Magnetic-Field Exposure and Childhood Lymphoma: Results

Study

Exposure Category

Number of Cases

Number of Controls

Crude ORa

95% CIb

Adjusted ORc

Adjusted 95% CId

Potential Confounders Addressede

Wertheimer and Leeper 1979

Birth addresses:

 

 

 

 

 

 

Age of onset, sex, socioeconomic status (SES), urban residence, family pattern, traffic congestion

 

HCCf

10

5

2.5

0.7-8.4

 

 

 

 

LCCg

21

26

 

 

 

 

 

 

Death addresses:

 

 

 

 

 

 

 

 

HCC

18

11

2.1

0.8-5.2

 

 

 

 

LCC

26

33

 

 

 

 

 

Tomenius 1986

Total residences:

 

 

 

 

 

 

Age, sex, church district of birth

 

=0.3 µT

2

1

1.8

0.2-19.8

 

 

 

 

<0.3 µT

130

115

 

 

 

 

 

Savitz et al. 1988

Field measurements for low-power conditions:

 

 

 

 

 

 

Maternal age, father's education, family income, maternal smoking in pregnancy, traffic density, age sex geographic area of residence  

 

>0.2 µT

2

16

2.2

0.5-10.3

3.2

 

 

 

<0.2 µT

11

191

 

 

 

 

 

 

Field measurements for high-power conditions:

 

 

 

 

 

 

 

 

>0.2 µT

3

29

1.8

0.5-6.9

 

 

 

 

<0.2 µT

10

175

 

 

 

 

 

 

Two-level wire codes:

 

 

 

 

 

 

 

 

High

5

52

0.8

0.3-2.2

 

 

 

 

Low

25

207

 

 

 

 

 

 

Wire codes:

 

 

 

 

 

 

 

 

Very high

3

8

3.3

0.8-13.7

 

 

 

 

Very low

10

88

 

 

 

 

 



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