Item response theory models in Stata
2015
Stata 14 provides several new commands for fitting item response theory (IRT) models. IRT has a long history in test development and psychometrics and is now being adopted more broadly in fields such as health services research. In this presentation, I will provide an overview of IRT, demonstrate fitting models with binary and categorical items, and discuss postestimation tools such as plotting characteristic curves and information functions.
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