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Multilevel SEM with complex sampling

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yoosoo's picture
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Joined: 06/19/2014 - 15:12
Multilevel SEM with complex sampling

Dear all,

Would you confirm if OpenMx supports multilevel SEM on complex sampling survey data, with categorical outcome? (each datapoint has different weight)

Thank you!

mhunter's picture
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Joined: 07/31/2009 - 15:26
Yes and No

I would say yes and no to this question. OpenMx supports ordinal data, complex sampling survey data, and user-specified fit functions. Ordinal data is supported by use of thresholds: http://openmx.psyc.virginia.edu/docs/openmx/latest/Ordinal_Path.html. Complex sampling survey data is supported by integration of sampling weights: http://openmx.psyc.virginia.edu/thread/3661. Some multilevel modeling is possible by use by "Wide" data formats. Latent Growth Curves are a typical example of using wide data to construct a multilevel model in a SEM program.

It would certainly be possible to put together an example using sampling weights, ordinal data, and a limited amount of multilevel structure. However, OpenMx does not currently have built-in features that make multilevel modeling particularly convenient. These are currently under active development by the OpenMx team.

I hope this answers your question.

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