Timeline for Is a three-way mixed anova suitable here?

Current License: CC BY-SA 4.0

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Aug 28, 2023 at 1:59	comment	added	Ute		This is quite complex to describe in words. Can you post graphs that for each of the four subgroups show biomarker vs time as a curve fir each participant?
Aug 27, 2023 at 21:17	comment	added	Carissa		That might indeed be the reason, Ute. Thanks for your lengthy response. It's really very helpful!! You mention that both methods are different and it depends on the scientific story I want to tell. That's a very interesting point. In which circumstances does it make more sense to use a linear mixed model then, in your opinion?
Aug 26, 2023 at 17:43	comment	added	Ute		I have added a paragraph about completely wrong version ANOVA - maybe this is why your colleague reacted so alarmedly, and remember, I also overlooked the word "mixed" in context with ANOVA.
Aug 26, 2023 at 17:41	history	edited	Ute	CC BY-SA 4.0	Added clarification about ANOVA
Aug 26, 2023 at 17:28	comment	added	Ute		I don't know why your colleague said this - they may have some reason? I understood you as you want to use time as a factor variable, while your colleague says you should treat it as continuous. There are many users here who would agree with your colleague, but I don't see it as "completely wrong", rather as "very different". It really depends on the scientific story that you want to tell in the end. Then you can see if your data support that story, and to that end, you have to chose a model that reflects your story. ... maye the whole thing is just a confusion of names for methods.
Aug 26, 2023 at 14:01	comment	added	Carissa		Hi Ute! Thanks for your response! Is an ANOVA completely wrong for this study design then? Or is a linear mixed model just better and more accurate, but both can be used?
Aug 26, 2023 at 11:19	history	answered	Ute	CC BY-SA 4.0