Limitation in recall is inability to remember details of eg long past exposure, childnood experiences .
Recall bias occurs when recall limitation is distributed unequally between control (referent) and study populations. and can thus affect validity of comparisons ( odds ratio or risk ratio etsimates).
Limitation in recall refers to the natural human inability to accurately remember past events or experiences. This can occur due to various reasons, such as the passage of time, the complexity of the events, or the person's cognitive abilities. For example, a person might have difficulty accurately recalling how many times they exercised in the past month. This limitation is a general issue that affects the accuracy of self-reported data and is an inherent challenge in studies relying on participants' memories.
Recall bias, on the other hand, is a systematic error that occurs when there is a difference in the accuracy or completeness of the recollections retrieved by participants in a study. This bias often arises in case-control studies where individuals with a particular outcome (e.g., a disease) may remember past exposures or events differently compared to those without the outcome. For example, someone who has developed a health condition might remember their past behaviors or exposures more vividly or differently compared to someone who has not developed the condition, possibly because they have thought more about what might have caused their illness.
Limitation in recall refers to the general inability of individuals to remember past events accurately or completely. This can be due to a variety of factors, including the passage of time, the complexity of the information, the individual’s cognitive abilities, or the context in which the information was encoded and stored.
Recall bias is a type of systematic error that occurs when there is a differential accuracy of recall between study groups. It typically arises in retrospective studies when participants with a particular outcome or exposure remember past events differently than those without the outcome or exposure.
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