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Questions - emmeans

post hoc test using emmeans in R

I am trying to do the posthoc test using emmeans with the unequal size data, we have 81 data for 2017 and 2018 while 54 for 2019 and 2020. when I run: n1<-lm(production~Forage* Dep* Region*Year,dat...
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papacan

r

emmeans

Votes: 0

Answers: 1

Latest Answer

emmeans() checks for estimability, and will not show output for non-estimable cases because, well, they can't be estimated, at least uniquely. The model isn't shown here, but my best guess is that the...
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Russ Lenth

emmeans - can you use a baseline measure in a contrast (i.e. as a different variable)?

Best practice when analysing data from an RCT is to adjust for the baseline measure (ancova). However, researchers often still ask for change from baseline in each group and their relative difference ...
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LucaS

r

emmeans

Votes: 0

Answers: 1

Latest Answer

As I said in a comment, the baseline is already set at its mean by default, so you get exactly the same the adjusted means as shown in the OP: > (EMM = emmeans(m1, ~ time + treat)) time treat emme...
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Russ Lenth

emmip - is there a way to plot a &#39;merged&#39; treatment x time factor?

I have attached some published data (at the end) that comes from a link on: https://www.middleprofessor.com/files/applied-biostatistics_bookdown/_book/pre-post.html I can run a fairly standard linear ...
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LucaS

r

longitudinal

emmeans

Votes: 0

Answers: 1

Latest Answer

I guess if you are using the same baseline value for each treatment, you can do something like this: foo = emmeans(m4, "treat_time") bar = contrast(foo, list(b1 = c(1,0,0), p1 = c(0,1,0), ...
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Russ Lenth

How to follow-up on brms categorical model with emmeans to see whether there are group differences in choosing one particular category over another

I ran a brms model in R with a complex three-way interaction that I am trying to decompose. See below for code. I have a multinomial dependent variable with three levels (happy/angry/fear) and multipl...
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user17821937

categorical-data

emmeans

brms

Votes: 0

Answers: 0

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