Probabilities Using Contingency Tables

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For 2x2 contingency tables there are many tests and summaries one can conduct depending on the study design. In this lecture we cover the risk difference, risk ratio, and odds ratio. • Note, on slide 11/24 the 95% CI should be (0.006, 1.5) for the estimate of 0.77 additional lung cancer cases. • • A video for the Biostatistical Methods I (BIOS 6611) course in the Department of Biostatistics and Informatics at the University of Colorado-Anschutz Medical Campus taught by Dr. Alex Kaizer. Slides and additional material available at https://www.alexkaizer.com/bios_6611. • • Table of Contents: • • 00:00 - Intro Song • 00:24 - Welcome • 00:48 - 2x2 Contingency Table Refresher • 02:03 - Risk Difference • 07:57 - Risk Ratio • 13:19 - Odds Ratio

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