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Understanding Case Control Studies and Contingency Tables

In this video, we delve into the intricacies of case control studies within research design. We begin by explaining different types of research studies, distinguishing between experimental and observational studies. We then focus specifically on case control studies, detailing their retrospective nature and how they differ from cohort studies. The video emphasizes the importance of constructing a correct 2x2 table (contingency table) for accurate calculations. Key rules for constructing these tables are outlined: outcome on top, positive first, and using the A, B, C, D order. We also cover the calculation of exposure rates and the odds ratio, demonstrating with a practical example on breast cancer and oral contraceptive use. Finally, the video discusses the interpretation of odds ratios, highlighting their significance as risk factors or protective factors. Follow these steps to ensure accurate data analysis in your case control studies.

00:00 Introduction to Case Control Study
00:06 Understanding Study Designs
00:33 Types of Study Designs
01:47 Introduction to Case Control Study
02:26 Constructing the Contingency Table
04:29 Calculating Exposure Rates and Odds Ratio
06:01 Case Control Study Example
09:19 Interpreting Odds Ratio
10:23 Summary and Conclusion
11:03 Like and Subscribe