Missing data regression question PreviousNext
Mplus Discussion > Missing Data Modeling >
Message/Author
 Christopher R. Beasley posted on Friday, April 22, 2011 - 9:27 pm
I have some missing data in my SPSS data set, and I want to run the model using FIML. I decided to run the Model in Mplus. The issue is that I want a total scale score to do this, so in order to replicate this in Mplus, I made a factor and set all the individual item loadings to one and the regressed the DV on my factor. In SPSS, I accounted for 15% of the variance using total scores, and in Mplus, I accounted for 75% of the variance. I had at least 85% of my observations on each variable, so this radical change seems unlikely. Is there something wrong with my logic or my syntax? Here's the syntax:

MODEL:
factor1 by PEFit9R@1;
factor1 by PEFit15R@1;
factor1 by PEFit24@1;
OHSAT on factor1;

Thanks,
Chris
 Bengt O. Muthen posted on Friday, April 22, 2011 - 9:49 pm
You might want to use formative indicators; see the Topic 1 handout (towards the end). Fix the coeff's all at 1.

What you do allows measurement error which is not allowed for when summing them up.
Back to top
Add Your Message Here
Post:
Username: Posting Information:
This is a private posting area. Only registered users and moderators may post messages here.
Password:
Options: Enable HTML code in message
Automatically activate URLs in message
Action: