NGROUPS option with MC simulation PreviousNext
Mplus Discussion > Categorical Data Modeling >
 Jon Heron posted on Friday, January 12, 2018 - 8:13 am
Hi Bengt/Linda

I am attempting to perform some power-calcs for an interaction model with two binary covariates and a binary outcome (logistic).

The output tells me

*** ERROR in ANALYSIS command
ALGORITHM=INTEGRATION is not available for multiple group analysis.
Try using the NGROUPS option with TYPE=MIXTURE.

However the manual says
"The NGROUPS option is not available for TYPE=MIXTURE."

Please can you advise? Is the error incorrect, or the manual? Or is this a sign I should stop for the day?

many thanks, Jon
 Bengt O. Muthen posted on Friday, January 12, 2018 - 7:46 pm
Hmmm. Can you send the output so we can see what version you are using.
 Jon Heron posted on Monday, January 15, 2018 - 2:42 am
it's version 8

but the manual i was referring to is version 7 so perhaps that's the reason?

The time has now passed so I don't need to fit this model now, but I can send my code if you need to sort this.
 Bengt O. Muthen posted on Monday, January 15, 2018 - 7:52 am
Yes, please send the code.
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