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st: CFA using gllamm


From   "Diego Bassani" <Diego_Bassani@camh.net>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: CFA using gllamm
Date   Thu, 6 Apr 2006 12:51:22 -0400

Hi all,

I have a scale composed of 15 variables (items in a 5-point likert scale) that correspond to 3 factors/domains. How do I run CFA using gllamm. Sophia, who developed gllamm, suggested it could be used for CFA in the statalist but was not specific and I am struggling to define the factors and run the analysis. I've read gllamm's manual, but still could not figure out how to do it.

My data:

Suppose the variable names are x1-x15 and the factors are f1 f2 and f3.

f1 corresponds to variables x1-x5
f2 corresponds to variables x6-x10
f2 corresponds to variables x11-x15

I tried using the eq syntax to define the factors (equations) using the following syntax:

eq f1: x1-x5
eq f2: x6-x10
eq f3: x11-x15

but where do I go from here? I'll not even post all my attempts.

Any ideas?

Diego

Diego G. Bassani, M.Sc., Ph.D. 
Centre for Addiction and Mental Health 
Health Systems Research & Consulting Unit 
33 Russell Street, Tower - T308
Toronto, ON - M5S 2S1 
diego_bassani@camh.net 
http://www.camh.net/hsrcu
Phone: +01 (416) 535 8501 # 6465
Fax: +01 (416) 979 4703 

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