Ordinal variables with many categories

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rabil's picture
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Joined: 01/14/2010

If an ordinal variable has 20 categories, is it practical to try to handle this with thresholds? Or would it be better to treat as continuous?

neale's picture
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Joined: 07/31/2009
If you have enough data

It is practical, but the different between threshold analysis and continuous would be slight if the density distribution of the categories is approximately normal. A highly skewed 20 category variable may still be better analyzed as ordinal - depending on how it got that way. Of course, it's a lot more parameters and computationally slower to analyze ordinal data with lots of categories.

lingsuer87's picture
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Joined: 05/03/2013
I am quite new for OpenMX. I

I am quite new for OpenMX. I have not figure out what the difference between binary data(with one threshold) with more than 2 category (say a variable with N category, so we have N-1 numbers of threshold).How does the script like? could you please give me some basic script as explaination? Thank you so much.

neale's picture
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Joined: 07/31/2009
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