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Causal diagrams guiding a student’s simulation of nondifferential misclassification. A) No misclassification; B) nondifferential misclassification of exposure 
(with no misclassification of confounder 
); C) nondifferential misclassification of 
that is independent of the nondifferential misclassification of 
; D) nondifferential misclassification of 
that is dependent on the nondifferential misclassification of 
.
