In a case-control study of childhood leukemia in relation to exposure to power-frequency electric and magnetic fields (EM F), 399 children resident in five Canadian provinces who were diagnosed at ages 0-14 years between 1990 and 1994 (June 1995 in British Columbia and Quebec) were enrolled, along with 399 controls.
Exposure assessment included 48-hour personal EMF measurement, wire coding and magnetic field measurements for subjects'residences from conception to diagnosis/reference date, and a 24-hour magnetic field bedroom measurement.
Personal magnetic fields were not related to risk of leukemia (adjusted odds ratio (OR)=0.95, p for trend=0.73) or acute lymphatic leukemia (OR=0.93, p for trend=0.64).
There were no clear associations with predicted magnetic field exposure 2 years before the diagnosis/reference date or over the subject's lifetime or with personal electric field exposure.
A statistically nonsignificant elevated risk of acute lymphatic leukemia was observed with very high wiring configurations among residences of subjects 2 years before the diagnosis/reference date (OR=1.72 compared with underground wiring, 95% confidence interval 0.54-5.45).
These results provide little support for a relation between power-frequency EMF exposure and risk of childhood leukemia.
Mots-clés Pascal : Leucémie, Champ électromagnétique, Epidémiologie, Facteur risque, Enfant, Homme, Canada, Amérique du Nord, Amérique, Santé et environnement, Etude cas témoin, Hémopathie maligne
Mots-clés Pascal anglais : Leukemia, Electromagnetic field, Epidemiology, Risk factor, Child, Human, Canada, North America, America, Health and environment, Case control study, Malignant hemopathy
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0255029
Code Inist : 002B19B. Création : 16/11/1999.