The Case-Control Study | Understanding Medical Research

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Case-control studies start with people who already have the outcome and look backward for exposures. This video covers why the design suits rare diseases, how it goes wrong when controls come from the wrong population, and the trap of recall bias. Chapters: 00:00 Introduction and goals 00:38 A rare disease: vampirism 01:42 Finding the cases first 02:45 Oral contraceptives and blood clots 04:22 The Achilles' heel: choosing controls 06:18 Coffee and gastric cancer: the wrong controls 08:28 Pitfalls: confounding and recall bias 09:36 Take-home points Learning objectives: After watching, you'll be able to: - Explain how a case-control study starts from the outcome and looks backward for exposures - Justify choosing a case-control design when an outcome is rare or the cause is unknown - Assess whether a study's controls come from the same theoretical cohort as its cases 📺 Watch the full playlist on YouTube: https://www.youtube.com/playlist?list=PLh9mgdi4rNewVyTec_MVGxIbNSEeMhEsZ 🎓 Enroll on Coursera for assessments and a certificate: https://www.coursera.org/learn/medical-research 🌐 Explore more learning opportunities on Yale Online: https://online.yale.edu/courses/understanding-medical-research-your-facebook-friend-wrong

Published 2020-07-31 · Watch on YouTube ↗
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