topic Re: Analysis for longitudinal data with control group in Statistical Procedures

Analysis for longitudinal data with control group

josecorrente — Thu, 28 Aug 2025 18:03:31 GMT

Hello everyone
I have a dataset in which one part is a control group (C) and the other part is a longitudinal study at two time points (M1 and M2). I initially ran a standard ANOVA, but that's not the case since I need to take the longitudinal data into account. Does anyone have any suggestions for a model to perform this analysis?

I'd be very grateful.

Thanks a lot

José Eduardo.

Re: Analysis for longitudinal data with control group

Ksharp — Fri, 29 Aug 2025 07:04:06 GMT

For longitudinal data, Check PROC MIXED or PROC GLIMMIX :

https://support.sas.com/kb/37/109.html
https://support.sas.com/kb/37/110.html
https://blogs.sas.com/content/iml/2019/12/03/longitudinal-data-response-profile-model.html
https://blogs.sas.com/content/iml/2019/12/05/longitudinal-data-mixed-model.html
https://stats.oarc.ucla.edu/other/mult-pkg/introduction-to-generalized-linear-mixed-models/

Re: Analysis for longitudinal data with control group

josecorrente — Tue, 02 Sep 2025 13:21:28 GMT

Hi Ksharp
Thank you for your suggestion. I will check it.

José Eduardo.