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GAMLj Mixed Model output (dots being displayed)

Posted: Sun Apr 30, 2023 8:23 pm
by dansquared
Hi all,

I'm running a mixed model and the output of some interactions are not showing although the model seemed to converge.
Dots (.) end up being displayed in the estimate, SE, df, t and p sections.

Why is that?

Really appreciate your help!

Re: GAMLj Mixed Model output (dots being displayed)

Posted: Sat May 06, 2023 4:45 pm
by mcfanda@gmail.com
Hi
dots are usually displayed when the estimation did not found a reasonable solution, which is another way to say that there was an issue with convergence. In other cases, some fixed effects cannot be estimated because of lack of degrees of freedom, or perfect collinearity. That said, if you share an example it would be easier to understand what is going on