Help with unordered categorical variable

[Anjana Rajagopal]

Hi,

I am trying to fit RI-CLPM into my data which has two variables (X and Y) across 5-time points. X is a numerical variable while Y is a binary/dichotomous variable. I am getting the following error while using 'lavaan' package in R.

Can someone please help me if I can do RI-CLPM with an unordered categorical variable? I saw in the FAQs that Mplus v8.7 can deal with categorical data, so has it not yet been updated in the 'lavaan' R package?

Thanks,

Aj

[Terrence Jorgensen]

Y is a binary/dichotomous variable

Then it is arbitrary to consider it (un)ordered.  

 

do RI-CLPM with an unordered categorical variable?

Not in lavaan.  And it is binary, so just change its class to ordered()

I saw in the FAQs that Mplus v8.7 can deal with categorical data, so has it not yet been updated in the 'lavaan' R package?

Mplus does the same thing with binary data that lavaan does.  But Mplus also implements a nominal response model, which is only relevant for multinomial (not binary) categorical variables.

Terrence D. Jorgensen

Assistant Professor, Methods and Statistics

Research Institute for Child Development and Education, the University of Amsterdam

http://www.uva.nl/profile/t.d.jorgensen

[Yves Rosseel]

lavaan cannot handle endogenous (depenent) unordered categorical variables.

But if your variables are binary, you should use the ordered= argument
to inform lavaan. See

https://lavaan.ugent.be/tutorial/cat.html

Yves.

On 1/18/23 08:28, Anjana Rajagopal wrote:
> Hi,
>
> I am trying to fit RI-CLPM into my data which has two variables (X and
> Y) across 5-time points. X is a numerical variable while Y is a
> binary/dichotomous variable. I am getting the following error while
> using 'lavaan' package in R.
>

> Screenshot 2023-01-18 172542.png
>
> Can someone please help me if I can do RI-CLPM with an unordered
> categorical variable? I saw in the FAQs that Mplus v8.7 can deal with
> categorical data, so has it not yet been updated in the 'lavaan' R package?
>
> Thanks,
> Aj
>
>

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