Programming the statistical procedures from SAS

Latent trait (theta) using PROC IRT

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Latent trait (theta) using PROC IRT

I´d like to know how to get the parameter estimates for the latent trait (theta) using PROC IRT. The output automatically displays the models´ parameters, slope and difficulty/threshould, but doesn´t display the latent trait parameter, which is the most interest when setting one IRT model.

SAS Employee
Posts: 19

Re: Latent trait (theta) using PROC IRT

You essentially want to score the data set. You can use the OUT= option to output the original data set plus the factor scores.

 

Proc IRT Documentation

 

Best,

Steve

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