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 Saskia Mulder posted on Tuesday, April 28, 2015 - 4:25 am
Dear Drs. Muthen,

I am doing Latent multiple-group cross-lagged analyses do examine the longitudinal association between two continuous variables moderated by gender.

However, the data has a multilevel structure with children in classes and classes nested in schools. We donít have any variables on the class or school level, but do want to control for the non-independence of the data. Until now I have used the cluster function for classroom to take into account that children are nested in classes. However, a reviewer suggested to also take into account the school level. Is it possible to use the cluster function for two clusters which are nested (i.e., classes in schools)? I know that three-level models are now possible with regular multilevel modeling in Mplus, but I could not find whether the cluster function can also be applied to three levels.

Thanks very much for your help in advance!

Cheers,

Saskia Mulder
 Bengt O. Muthen posted on Tuesday, April 28, 2015 - 10:25 am
Check the UG index for CLUSTER.
 Saskia Mulder posted on Friday, May 08, 2015 - 6:32 am
Dear Drs. Muthen,

Thank you for your respons. I am sorry, but I don't know what the UG index is and where I can find this. Could you please explain this to me?

Thank you!

Cheers, Saskia Mulder
 Bengt O. Muthen posted on Friday, May 08, 2015 - 8:22 am
"UG" is the Mplus Version 7 User's Guide and in the back of it you find "Index".
 Saskia Mulder posted on Tuesday, May 12, 2015 - 6:06 am
Okay, that was logical...

I have now found that it is possible to use the cluster command with a threelevel model.

I have specified:
cluster = school Class;
MISSING ARE ALL(999);
GROUPING = Geslacht (0=BOY 1=GIRL);

ANALYSIS: TYPE = threelevel;

However, now I get the error : Cluster ID cannot appear in more than one group.

Is it not possible to do the threelevel cluster analyses in multigroup analyses?

Cheers, Saskia
 Bengt O. Muthen posted on Tuesday, May 12, 2015 - 7:39 am
Within-cluster grouping needs special modeling and is discussed in Web Note 16. Grouping is straightforward only when referring to the highest level.
 Melvin C Y posted on Thursday, June 11, 2015 - 2:06 pm
Dear Drs. Muthen,

How do you specify the within and between command in a three level model with some variables specified at L1 and L2 only.

Cluster = L3 L2;
Between are ??;

ModeL:
%within%
a; b; c;
%between L2%
a; b; c;
%between L3%
c;
 Bengt O. Muthen posted on Thursday, June 11, 2015 - 4:22 pm
See page 571 of the UG.
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