Power calculations in LGM PreviousNext
Mplus Discussion > Growth Modeling of Longitudinal Data >
 Jon Heron posted on Wednesday, May 26, 2004 - 12:15 am

Due to the approaching deadline for a grant proposal I am attempting to run before I can walk
so I apologise if this is a basic question
that could be answered with a bit reading.

I have been running one of the models listed in
Muthen and Muthen 2002 (How to use a Monte Carlo study..) for the LGM with no missing data.

I wish to alter the covariate so that the split
is not 50:50 (eg 75:25, 95:5) but everything I
have tried either increases the power or
has negligible effect. It seems to me that
the variance of the covariate is mirrored
in the residual variance for the intercept
but this line has not proven very fruitful.

If anyone can help I will be extremely grateful.


 Linda K. Muthen posted on Wednesday, May 26, 2004 - 7:44 am
If you send your input and an brief explanation of what you are trying to do to support@statmodel.com, we can take a look at it.
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