Programming the statistical procedures from SAS

Proc IRT: estimate latent trait by passing KNOWN item parameters

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New Contributor
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Proc IRT: estimate latent trait by passing KNOWN item parameters

Hello, I am wondering if it possible (if so, how) to pass already known item parameters to SAS to estimate latent traits. Thanks!

SAS Super FREQ
Posts: 3,304

Re: Proc IRT: estimate latent trait by passing KNOWN item parameters

If you already have a fitted model, then you can use the INMODEL= option to specify a SAS data set that contains the model parameters. You can use the SCORE suboption to score new subjects without refitting the model. 

 

You can also use the INMODEL= option to provide initial values for parameter estimates when fitting a model. 

For details, see the documentation for the PROC IRT statement.

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