Non-differential recall bias is a type of [recall bias]( ) that occurs when there is a consistent inaccuracy in the recollection of information by all study participants, irrespective of their exposure or disease status. Unlike differential recall bias, which affects cases and controls differently, non-differential recall bias affects all groups equally. This type of bias can lead to the misclassification of exposures or outcomes, potentially diluting the association between the exposure and the outcome.
