I want to check normal, sphericity and homogeneity ... View more

In this thread https://communities.sas.com/t5/SAS-Statistical-Procedures/Proc-mixed/m-p/489027#M25407 I noted that you cannot include "random rep;" with type=un. You cannot include it with type=cs either, or with most of the other commonly used types. You can optionally include it with type=ar(1), to generate "AR(1) + RE". Refer to the paper by Littell et al. that I linked in the other thread, as well as https://www.sas.com/store/books/categories/usage-and-reference/sas-for-mixed-models-second-edition/prodBK_59882_en.html   I am not entirely sure what you mean by "the literals to appear as in the lsmeans like glm". I'm guessing you mean letter assignments, which you can get using the LINES option on the LSMEANS statement.   Tukey-adjusted pairwise comparisons among main effects means are fine. But I do not recommend using Tukey-adjusted comparisons among interaction means; they are too conservative because they control for all pairwise comparisons (of which there are 630, for 4 x 9 = 36 means) whereas you are typically interested in only a subset of comparisons (198, if I've computed correctly). Consider SLICE and SLICEDIFF.   In general, I believe pairwise comparisons are a poor approach to interpreting an interaction (especially when factors have many levels, for example 4 x 9), so I generally test what I consider to be contextually useful hypotheses with CONTRAST or ESTIMATE statements.    If you post your GLIMMIX code, the Community might be able to make suggestions.   ... View more

Hello @jescam05, Your question requires more details before experts can help. Can you revise your question to include more information?    Review this checklist: Specify a meaningful subject line for your topic.  Avoid generic subjects like "need help," "SAS query," or "urgent." When appropriate, provide sample data in text or DATA step format.  See this article for one method you can use. If you're encountering an error in SAS, include the SAS log or a screenshot of the error condition. Use the Photos button to include the image in your message. It also helps to include an example (table or picture) of the result that you're trying to achieve. To edit your original message, select the "blue gear" icon at the top of the message and select Edit Message.  From there you can adjust the title and add more details to the body of the message.  Or, simply reply to this message with any additional information you can supply.   SAS experts are eager to help -- help them by providing as much detail as you can.   This prewritten response was triggered for you by fellow SAS Support Communities member @ballardw . ... View more

As I've suggested in another of your threads:    https://communities.sas.com/t5/SAS-Statistical-Procedures/LSMEANS-LINES-option-in-PROC-GLM/m-p/466947#M24285   "you really, really need to read SAS® for Mixed Models, Second Edition"   In GLM, random effects are included in the MODEL statement. In MIXED, random effects are not included in MODEL; instead random effects are specified in RANDOM or REPEATED statements. Even if your model runs apparently well in MIXED, your specification is not correct, and neither are the results. Mixed models are complex, and you must devote effort to learning enough to apply them correctly.       ... View more