Two-group pre/post data are deceptively simple, and you could analyze them in many different ways, depending on your goals. Here are three blog posts on the topic:
solomonkurz.netlify.app/blog/2022-06...
solomonkurz.netlify.app/blog/2020-12...
solomonkurz.netlify.app/blog/2023-06...
Just use multilevel models for your pre/post RCT data | A. Solomon Kurz
I've been thinking a lot about how to analyze pre/post control group designs, lately. Happily, others have thought a lot about this topic, too. The goal of this post is to introduce the change-score a...
