Multiple Group MIMIC model with censo... PreviousNext
Mplus Discussion > Missing Data Modeling >
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 Anonymous posted on Wednesday, March 23, 2005 - 10:22 pm
Hi,

I'm trying to run a multiple group MIMIC model that has censored indicators for the latent factor. I have three covariates and would like to use the TYPE = MISSING command, but the program will not run and says to use TYPE = MIXTURE with KNOWNCLASS, but this causes one of the factor loadings to be negative and the program will not run when I try to model the covariates, it says that the latent factor is not a latent factor. Any suggestions?
Thanks
 Linda K. Muthen posted on Wednesday, March 23, 2005 - 10:49 pm
You will need to send your full output, data, and license number to support@statmodel.com to get an answer to this one.
 Herb Marsh posted on Thursday, September 25, 2008 - 11:15 am
I am running a MIMIC model as an alternative to a multigroup model ESEM (using data from your example 4 in your addendum for versions 5.1).

TITLE:MPEX4 MIMIC 4c F1-F2 on group;
DATA: FILE IS example4.dat;
VARIABLE: NAMES ARE y1-y10 group;
!GROUPING IS group (1 = g1 2 = g2);
MODEL:
f1-f2 BY y1-y10 (*1);
f1-f2 on group;
OUTPUT: TECH1; tech4; mod(0); sampstat;

Is it possible to merely allow the grouping variable to be correlated with the EFA factors?

I tried replcing the line:
f1-f2 on group;
with each of the following:
f1-f2 with group;
group with f1-f2;

but got the following warnings

THE STANDARD ERRORS ... AN INDICATION OF MODEL NONIDENTIFICATION.
CONDITION NUMBER IS 0.896D-12. PROBLEM INVOLVING PARAMETER 43.
(parameter 43 is the variance of the grouping variable)
 Linda K. Muthen posted on Thursday, September 25, 2008 - 4:22 pm
I think the message is because group is a binary variable and the mean and variance are not orthogonal. If you obtain standard errors, you can ignore this message.
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