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2016 ; 115
(1
): 122-8
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Childhood leukaemia and distance from power lines in California: a
population-based case-control study
#MMPMID27219016
Crespi CM
; Vergara XP
; Hooper C
; Oksuzyan S
; Wu S
; Cockburn M
; Kheifets L
Br J Cancer
2016[Jun]; 115
(1
): 122-8
PMID27219016
show ga
BACKGROUND: Studies have reported an increased risk of childhood leukaemia
associated with living near high-voltage electric power transmission lines that
extend to distances at which magnetic fields from lines are negligible. We
conducted a large records-based case-control study of childhood leukaemia risk in
the population living near power lines in California. METHODS: The study included
5788 childhood leukaemia and 3308 central nervous system (CNS) cancer cases (for
comparison) born in and diagnosed in California (1986-2008), and matched to
population-based controls by age and sex. We geocoded birth address and estimated
the distance from residence to transmission lines using geographic information
systems, aerial imagery, and, for some residences, site visits. RESULTS: For
leukaemia, there was a slight excess of cases within 50?m of a transmission line
over 200?kV (odds ratio 1.4, 95% confidence interval 0.7-2.7). There was no
evidence of increased risk for distances beyond 50?m, for lower-voltage lines, or
for CNS cancers. CONCLUSIONS: Our findings did not clearly support an increased
childhood leukaemia risk associated with close proximity (<50?m) to higher
voltage lines, but could be consistent with a small increased risk. Reports of
increased risk for distances beyond 50?m were not replicated.