Hi,
I am trying to fit a crossed-effects mixed model in my data but Stata returns the following error: "likelihood evaluates to missing r(430)". Here's the command I'm using:
mixed choice || _all: R.id || _all: R.scenario, reml
I can fit this model in a subset of my data, but when I use all my data (600 individuals, 10 observations per person), the model does not converge. I've tried some of the options specified in the maximize manual (e.g., changing how the likelihood function is maximized using the technique option, specifying difficult), but I get the same error message when I run the model on the entire sample.
Any help on how to solve this issue would be much appreciated.
Thank you
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