When exposure is subject to nondifferential misclassification, are validation data helpful in testing for an exposure--disease association? P Gustafson, ME Karim January 2019 Code Source Document measurement-error theory Related Comparison of statistical approaches for dealing with immortal time bias in drug effectiveness studies Hypothesis testing for an exposure--disease association in case--control studies under nondifferential exposure misclassification in the presence of validation data: Bayesian and frequentist adjustments