A mortality study of electrical utility workers in Québec.
Objectives-The objective of this study was to investigate the mortality of electrical utility workers exposed to electric and magnetic fields.
Method-A historical cohort mortality study was carried out on 21 744 workers who were employed in an electrical company in the province of Quebec between 1970 and 1988.
The last job held by each study subject was coded.
A job exposure matrix (JEM) was used to estimate the exposure to 60 Hz electric and magnetic fields, and pulsed electromagnetic fields (as recorded by the PEMF (POSITRON) meter) in this job.
Standardised mortality ratios (SMRs) were calculated relative to Quebec men.
Because the exposure was exclusively among blue collar workers, the remainder of the analyses by exposure were restricted to them.
Rate ratios (RRs) in the exposed groups relative to the background groups were estimated with Poisson regression.
There were 1582 deaths by the end of follow up.
SMRs were almost all below one and never substantially increased, although there were a few increased rate ratios (RRs).
There was a significant RR of 2.00 (95% confidence interval (95% CI) 1.37-2.93) for deaths caused by accidents and violence in workers exposed to magnetic fields, RR of 1.82 (95% CI 1.25-2.65) for electric fields, and RR of 1.62 (95% CI 1.13-2.32) for pulsed electromagnetic fields.
Occupational accidents related to power lines explain some of the excess of deaths from accidents and violence.
Some association was found betwe...
Mots-clés Pascal : Compagnie électricité, Champ électromagnétique, Exposition professionnelle, Toxicité, Homme, Médecine travail, Mortalité, Epidémiologie, Québec, Canada, Amérique du Nord, Amérique, Etude cohorte
Mots-clés Pascal anglais : Electric utility, Electromagnetic field, Occupational exposure, Toxicity, Human, Occupational medicine, Mortality, Epidemiology, Quebec, Canada, North America, America, Cohort study
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 96-0084368
Code Inist : 002A08E. Création : 199608.