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st: Data preparation for Multilevel and Item Response Models
From
Christopher Sanford <[email protected]>
To
[email protected]
Subject
st: Data preparation for Multilevel and Item Response Models
Date
Wed, 20 Apr 2011 14:12:56 -0700 (PDT)
I am attempting to run a factor analysis for binary data and am requesting help
in preparing my data. Before running GLLAMM I know that I I need to do three
things:
1. Create dummy variables for each of the test items
2. Stack the item responses
3. Reshape the data into long form
How do I create dummy variables for each item (not the responses)? I have
searched online and have only found examples of creating dummy variables for the
response categories.
I should be able to stack the responses and reshape the data using the help
feature in Stata.
Thank you for your help.
Christopher Sanford
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