Prospective epidemiological studies which seek to relate potential risk factors to the risk of disease are subject to appreciable biases which are often unrecognized.
The inability to precisely measure subjects' true values of the risk factors under consideration tends to result in bias towards unity in the univariate relative risks associated with them-the more imprecisely a risk factor is measured, the greater the bias.
When correlated risk factors are measured with different degrees of imprecision the adjusted relative risk associated with them can be biased towards or away from unity.
When designing a new prospective study cost considerations usually limit the total number of subject-evaluations that are available.
Mots-clés Pascal : Epidémiologie, Homme, Prospective, Méthodologie, Facteur risque, Analyse statistique, Biais
Mots-clés Pascal anglais : Epidemiology, Human, Prospective, Methodology, Risk factor, Statistical analysis, Bias
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 94-0021288
Code Inist : 002B30A01A1. Création : 199406.