Two new videos posted: Clinical Significance and Why CI’s are better than P-values

We added two new videos to clarify and expand upon some concepts. They are both found on the Power, Type II Error and Beta page. They speak specifically to the difference between clinical vs statistical significance andwhy confidence intervals are better than p-values (and how to interpret CI's). If you have questions, please put them … Continue reading Two new videos posted: Clinical Significance and Why CI’s are better than P-values →

Risk Ratios and Odds Ratios

Seems that in prior sessions there was some confusion about odds ratios and risk ratios. I made a video to hopefully clear some of that up and explain how I think about them. I also stole the pie graph idea from Anthony J. Viera's 2008 paper in the Southern Medical Journal. Let me know in … Continue reading Risk Ratios and Odds Ratios →

Study Design Videos Being Posted

Hello students. Many of the videos for the "Fundamentals of Study Design" section are currently being posted. We're still busy writing the descriptions and creating the problem sets, and there are a few videos left to create. However we wanted to let you know early so you could get a jump on them early. Remember … Continue reading Study Design Videos Being Posted →

Number Needed To Treat Video Added

Dear students, we added a video on the Number Needed To Treat to the "Measuring Risks" lesson. Feel free to provide us with comments, suggestions and questions.

New Videos on Power Done

Dear students, The videos on statistical power and it's relation to type II error (β), effect size, type I error (α) and sample size have been completed. Here's a link to those videos. Let us know if you have any questions or comments. Thanks, Beth & Rahul