Medical Statistics - Part 7: OR and RR in Observational Studies

Cohort studies compare groups of exposed and non-exposed individuals. Both groups are followed over time to determine whether a particular outcome, e.g., a specific disease, develops. In contrast, case-control studies recruit patients with a disease or outcome of interest. These cases are compared with a set of unaffected healthy individuals termed controls.

Outline:
00:00 - Introduction
01:33 - Research question
03:15 - Relative risk
05:11 - Odds ratio
08:05 - Conclusion

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