WHAT IS SELECTION BIAS? - 3-minute mini epidemiology tutorial

In this mini-tutorial, I will teach you what selection bias is using two real-world examples. This type of bias mostly occurs in observational studies, for example in research where you are comparing two types of treatment (also called confounding by indication), or in screening studies. These video's might also be interesting for you: What is recall bias? -    • What is recall bias? - Mini-tutorial of on...   Confounding by indication made easy -    • CONFOUNDING BY INDICATION MADE EASY - lear...   Study designs -    • STUDY DESIGNS IN EPIDEMIOLOGY - Tutorial &...   About me: I am a registered clinical epidemiologist and working as a fellow in medical oncology in the Netherlands. I have published over 50 manuscripts and have received several large research grants. I am particularly interested in research in geriatric oncology and am a an active member of the International Society for Geriatric Oncology. You can find more information about my work on my linkedin page: www.linkedin.com/in/nienke-de-glas And here is my full bibliography: https://pubmed.ncbi.nlm.nih.gov/?term... Disclaimer: Views and opinions are my own. Examples from clinical research will always include either my own work, or previously published research. I will include references in the description box.