Evidence-Based Practice / Unit 6 EBP 0804 short lesson, about 20 seconds
Appraising a Cohort Study
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The idea
Appraising a cohort study asks whether the groups were comparable at the start, whether exposure and outcome were measured the same way in both, and whether follow-up was long and complete enough.
In practice
Two cohorts alike at baseline, measured identically, followed to a meaningful point.
Where people slip
Comparability at baseline is where confounding enters, and it is judged from what the study measured.
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