Retrospective case-control or prospective (followup) studies are important epidemiological tools and have provided useful information on exposure disease associations.
Prospective studies would be the ideal option, but many countries (particularly in the developing world) do not have the necessary infrastructure to follow people up.
Both retrospective and prospective studies are, however, sometimes conducted without due regard for their own limitations.
These limitations are exacerbated when measures of exposure or disease are based on a single measurement and where the population under study is homogeneous with regard to exposure.
The former is responsible for regression dilution bias and the latter for a lack of contrasts between exposure groups.
Mots-clés Pascal : Pays en développement, Epidémiologie, Etude longitudinale, Méthodologie, Homme, Article synthèse, Etude statistique, Corrélation
Mots-clés Pascal anglais : Developing countries, Epidemiology, Follow up study, Methodology, Human, Review, Statistical study, Correlation
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 94-0096773
Code Inist : 002B30A01A1. Création : 199406.