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Questions - emmeans

How to specify contrasts in lme to test hypotheses with interactions

I have a generalized mixed model that has 2 factors (fac1 (2 levels), fac2 (3 levels)) and 4 continuous variables (x1,x2,x3,x4) as fixed effects and a continuous response. I am interested in answering...
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JmO

r

lme4

nlme

emmeans

Votes: 0

Answers: 1

Latest Answer

I think you have to take a step back and ask yourself what hypotheses exactly you want to test here. Taken word for word, your 3-point list results in a lot (!) of hypotheses tests, some of which can ...
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benimwolfspelz

Error message in emmeans function output in Shiny : "object 'factor' not found"

I am very new shiny user. I wanted to show the results of post-hoc test using emmeans function. Here's the code of my shiny app. ui <- shinyUI(fluidPage( # Application title titlePanel("...
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learners

r

shiny

anova

shiny-reactivity

emmeans

Votes: 0

Answers: 1

Latest Answer

Try this change to the if statement inside your output$Tukey1. Basically, I suggest building up the formulae, used in the lm() and the emmeans() calls if (input$Depedent_Var=="length_ch2") {...
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langtang

error message when I tried to get marginal(adjusted) means by using emmeans

Hi I am doing linear regression in R and want to create marginal(adjusted) means for my subgroups. The linear regression includes age, gender, education, marital status, employ, ethnicity and health c...
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AFWWU

r

linear-regression

emmeans

Votes: 0

Answers: 1

Latest Answer

emmeans works by creating a grid of all combinations of the predictor levels - called the reference grid. In this case there are 19,800 such factor combinations. The estimated marginal means (EMMs) ar...
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Russ Lenth

converting the glmer output from logit to response scale

I hoping get some can help solving this mystery in my mind. The 7th coefficient in my glmer() call is 0.28779305 on the logit scale. This coefficient can be also obtained by using contrast() in the em...
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Simon Harmel

r

regression

glm

lme4

emmeans

Votes: 0

Answers: 2

Latest Answer

Following on from @RussLenth's answer: contrast(EMM, CON) gives you log(o1) - log(o3) - log(o5) + log(o7), and it is indeed equal to the 7th coefficient value. contrast(REMM, CON) (i.e. regridded) gi...
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Ben Bolker

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