To determine whether long term potroom workers in an aluminium smelter are at increased risk of neurological disorders.
Methods-Cross sectional study of 63 current and former aluminium potroom workers first employed before 1970 and with at least 10 years of service.
A group of 37 cast house and carbon plant workers with similar durations of employment and starting dates in the same smelter were used as controls.
The prevalence of neurological symptoms was ascertained by questionnaire.
Objective tests of tremor in both upper and lower limbs, postural stability, reaction time, and vocabulary were conducted.
All subjects were examined by a neurologist.
No significant differences in age, race, or education were found between the two groups.
Although the potroom group had higher prevalences for all but one of the neurological symptoms, only three odds ratios (ORs) were significantly increased ; for incoordination (OR 10.6), difficulty buttoning (OR 6.2), and depression (OR 6.2).
Tests of arm or hand and leg tremor in both the visible and non-visible frequencies did not show any significant differences between the two groups.
Testing of postural stability showed no definitive pattern of neurologically meaningful differences between the groups.
There were no significant differences between the two groups in reaction time, vocabulary score, or clinical neurological assessment. (...)
Mots-clés Pascal : Aluminium, Métal léger, Toxicité, Exposition professionnelle, Médecine travail, Homme, Système nerveux pathologie, Etude transversale, Epidémiologie, Industrie métallurgique, Fonderie, Tremblement, Posture, Ataxie, Test neuropsychologique
Mots-clés Pascal anglais : Aluminium, Light metal, Toxicity, Occupational exposure, Occupational medicine, Human, Nervous system diseases, Cross sectional study, Epidemiology, Metallurgical industry, Foundry, Tremor, Posture, Ataxia, Neuropsychological test
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 97-0246822
Code Inist : 002B03L05. Création : 11/06/1997.