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Questions - random-effects

Multinomial logit with random effects does not converge using mblogit

I would like to estimate a random effects (RE) multinomial logit model. I have been applying mblogit from the mclogit package. However, once I introduce RE into my model, it fails to converge. Is ther...
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Barbora

r

multinomial

convergence

random-effects

logits

Votes: 0

Answers: 0

How can I incorporate a categorical variable with ~200 levels in a nonlinear mixed effects model in R?

I am trying to fit a nonlinear mixed effects model with a categorical variable genotype that has around 200 levels. So this is the linear version of the model. mlinear <- lmer(WUE ~ moisture * geno...
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Jon

r

categorical-data

nlme

random-effects

Votes: 0

Answers: 2

Latest Answer

It looks like you’re using lme4::lmer for your linear model and nlme::nlme for the logistic? If you use lme4 for both, you should be able to keep the same model specification, and use lme4::glmer with...
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zephryl

Comparing mixed models: singular fit for random effect group but only in some models. Should I drop RE group from all models or just where singular?

I am fitting several mixed models using the lmer function in the package lme4, each with the same fixed effects and random effects, but different response variables. The purpose of these models is to ...
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Oscar Clendon

r

lme4

random-effects

singular

model-comparison

Votes: 0

Answers: 2

Latest Answer

When the model converges to a singular fit, it indicates that the random structure is overfitted. Therefore I would argue that it does not make sense to compare these. I would also be concerned about ...
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Robert Long

SAS proc glm random effects model with contrasts translated into R

My apologies for any errors; I only recently began learning SAS. I was given this SAS code (the code below is a reprex, not the exact code) that uses proc glm to assumedly make a random effects model....
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jrcalabrese

r

sas

glm

random-effects

Votes: 0

Answers: 1

Latest Answer

Answering the part of this that is answerable: what is going on with the two different estimates. The estimate statement includes a list of coefficients. Those are multiplied by the values, and then ...
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Joe

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