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Association between Childhood Leukaemia and Exposure to Power-frequency Magnetic Fields in Middle Europe

Biomedical and Environmental Sciences 2012年第5期25卷 597-601页

作者： Vitezslav JIRIK Ludek PEKAREK Vladimir JANOUT Hana TOMASKOVA Department of Epidemiology and Public Health Faculty of Medicine University of Ostrava Department of Biophysics Faculty of Science Palacky University Olomouc National Institute of Public Health

Abstract Objective Higher levels of exposure to extremely low-frequency magnetic fields （ELF-MF） are associated with a slightly increased risk of childhood leukaemia. Compared with more-developed Western countries, higher exposure levels are evident in the Czech Republic, probably because of the different types of housing. In light of this, we aimed to examine the association between ELF-MF exposure and childhood leukaemia in the Czech Republic. Methods We conducted a paired case-control study. The cases （children with leukaemia） were age- sex- and permanent residence-matched to controls （children without leukaemia）. Although this limited potential bias and confounding, it also limited our number of participants. Results The matched analyses included 79 case-control pairs. No significant association between ELF-MF exposure and childhood leukaemia was observed for exposures over 0.2 μT （odds ratio [0R]=0.93, confidence interval [Cl]=0.45-1.93）, 0.3 μT （0R=0.77, Cl=0.34-1.75）, or 0.4 μT （OR=0.9, Cl=0.37-2.22）. Conclusion Despite higher levels of exposure in Middle and Eastern Europe, no indication of an association between ELF-MF exposure and childhood leukaemia was determined. This in contrast to the findings of previous studies conducted in different countries.

关键词： Childhood leukaemia Power-frequency magnetic field exposure Extremely low-frequencymagnetic field housing types

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