How do I find out who is included in the fitting?

[franz...@gmail.com]

Dear lavaan-friends!

I have a super basic question and I guess there is probably an answer somewhere in this group. So I am happy to be forwarded to that topic.

As I have a couple of missings in my dataset and the number of observations already indicates that not all persons are taken into account when lavaan fits the model, I was wondering how I can find out who is included?

Thank you!

Best,

Franzi

[Jeremy Miles]

You can use the complete.cases() function on a data frame that contains only the variables that you use in the model.

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[Terrence Jorgensen]

I was wondering how I can find out who is included?

lavInspect(fit, "case.idx")

These are the rows of data used in the analysis.

Terrence D. Jorgensen

Postdoctoral Researcher, Methods and Statistics

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

UvA web page: http://www.uva.nl/profile/t.d.jorgensen

[franz...@gmail.com]

Thank you all so much!!! :)

[franz...@gmail.com]

Hello,

another thing: is it possible to save something like a dummy variable to exclude people from analysis with less items?

Best,

Franzi

[Terrence Jorgensen]

is it possible to save something like a dummy variable to exclude people from analysis with less items?

They are row numbers from your data set, so you can check whether each row (number) of data is in that list

1:nrow(myData) %in% lavInspect(fit, "case.idx")

That will be a TRUE/FALSE vector, which also functions as a dummy code because TRUE == 1L and FALSE == 0L.