[en] Inaccuracies in dose assignments can lead to misclassification in epidemiological studies. The extent of this misclassification is examined for different error functions, classification intervals, and actual dose distributions. The error function model is one which results in a truncated lognormal distribution of the assigned dose for each actual dose. The error function may vary as the actual dose changes. The effect of misclassification on the conclusions about dose effect relationships is examined for the linear and quadratic dose effect models. 10 references, 9 figures, 8 tables