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    Hi All

    Im trying to get my head around stats related to experimental studies.

    Can you carry out Relative Risk and Absolute Risk Reduction in Retrospective Cohort studies.

    I know that you can carry out the odds ratio, and I know some stats calculations are not valid in these types of studies.

    Can anyone tell me the answer, and also why you can or cannot use them?

    Thank you, and any help is much appreciated
 
 
 
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