Meta-Analysis: Fondue or Clam Chowder? | Understanding Medical Research

Meta-analysis is often called the top of the evidence pyramid, but it is only as good as what goes into the pot. This video covers how studies are pooled with a weighted average, how to read a forest plot, and what I-squared and funnel plots reveal about heterogeneity and publication bias. Chapters: 00:00 Introduction and goals 00:44 Combining state graduation rates 03:02 Fondue vs clam chowder 03:37 A study of studies 04:57 Forest plot: spinal manipulation for back pain 06:17 Randomized trials mixed with observational studies 07:38 Heterogeneity and the I-squared statistic 10:22 Publication bias and the funnel plot 12:41 Take-home points Learning objectives: After watching, you'll be able to: - Describe a meta-analysis as a weighted average of studies asking the same question - Interpret a forest plot, the I-squared statistic, and a funnel plot - Critique a meta-analysis for mixed study quality, high heterogeneity, and publication bias 📺 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