Question: Please explain how study design would affect the sample size of a study. More specifically, please elaborate on how the sample size calculation would vary

Please explain how study design would affect the sample size of a study. More specifically, please elaborate on how the sample size calculation would vary between, for instance, a cross-sectional and a case-control study.

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Please elaborate on how the study design would affect the sample size calculation. Please give specific examples of using, for instance, a case-control study VS. a cohort study.

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