The IRT Procedure

ODS Table Names

PROC IRT assigns a name to each table that it creates. You can use these names to refer to the table when you use the Output Delivery System (ODS) to select tables and create output data sets. These names are listed in Table 53.3. For more information about ODS, see Chapter 20: Using the Output Delivery System.

Table 53.3: ODS Tables Produced by PROC IRT

ODS Table Name	Description	Option
ConvergenceStatus	Convergence Status	Default output
Eigenvalues	Polychoric correlation–based eigenvalues	Default output
FactorCov	Factor covariance estimates	Default output; available only for multidimensional models
FactorCovInit	Initial factor covariance estimates	PINITIAL option; available only for multidimensional models
FactorCovRot	Rotated factor covariance estimates	ROTATE= oblique rotation methods; available only for multidimensional exploratory models
FitStatistics	Model fit statistics	Default output
GroupInfo	Group information	Default output; available only for multiple group analysis
ItemFit	Item fit statistics	ITEMFIT option; available only for binary responses that have one latent factor
ItemInfo	Item information	Default output
IterHistory	Iteration history	Default output
ModelInfo	Model information	Default output
OptInfo	Optimization information	Default output
ParameterEstimates	Item parameter (difficulty and slope) estimates for unidimensional models or intercept parameter estimates for multidimensional models	Default output
ParameterEstimatesInit	Initial item parameter (difficulty and slope) estimates for unidimensional model or initial intercept parameter estimates for multidimensional models	PINITIAL option
PolyCorr	Polychoric correlation matrix	POLYCHORIC option
Slope	Slope parameter estimates	Default output; available only for multidimensional confirmatory models
SlopeInit	Initial slope parameter estimates	PINITIAL option; available only for multidimensional models
SlopeRot	Rotated slope parameter estimates	Default output; available only for multidimensional exploratory models