A recent study by Knox concludes that cases and « clusters » of two or more cases of childhood leukaemia and non-Hodgkin's lymphoma occur closer to many kinds of industrial installation than to supposedly comparable control locations.
It is argued that these findings could be largely or entirely artefactual, the apparent differences arising out of the inappropriateness of the control data.
Knox used randomly selected postcode units as controls, a procedure that leads to the comparison of individuals located in areas with typically quite different population densities from those for the cases.
The resulting potential for bias is explored and the arguments are exemplified by analysing household data based on postcodes.
Mots-clés Pascal : Benzène, Polluant, Environnement, Leucémie, Enfant, Homme, Toxicité, Etude critique, Méthodologie, Biais méthodologique, Analyse amas, Royaume Uni, Europe, Solvant organique, Hémopathie maligne, Etude cas témoin
Mots-clés Pascal anglais : Benzene, Pollutant, Environment, Leukemia, Child, Human, Toxicity, Critical study, Methodology, Methodological bias, Cluster analysis, United Kingdom, Europe, Organic solvent, Malignant hemopathy, Case control study
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 95-0481540
Code Inist : 002B19B. Création : 01/03/1996.