{smcl} {* *! version 1.0.0 23jul2018}{...} {vieweralsosee "[IRT] irt 1pl" "help irt 1pl"}{...} {vieweralsosee "[IRT] irt 1pl postestimation" "help irt 1pl postestimation"}{...} {vieweralsosee "[IRT] irt" "help irt"}{...} {p2colset 1 13 15 2}{...} {p2col:{bf:raschify} {hline 2}}Transform 1PL model estimates to Rasch metric{p_end} {p2colreset}{...} {marker syntax}{...} {title:Syntax} {p 8 15 2} {cmd:raschify} {marker description}{...} {title:Description} {pstd} {cmd:raschify} transforms 1PL model estimates to the Rasch metric. All the postestimation tools available after {helpb irt 1pl postestimation:irt 1pl} can be used with the transformed results. {marker examples}{...} {title:Examples} {pstd}Setup{p_end} {phang2}{cmd:. webuse masc1} {pstd}Fit a 1PL model to binary items {cmd:q1-q9}{p_end} {phang2}{cmd:. irt 1pl q1-q9} {pstd}Transform the 1PL model coefficients to the Rasch metric{p_end} {phang2}{cmd:. raschify} {pstd}Display parameters of the Rasch model{p_end} {phang2}{cmd:. irt} {pstd}Use the Rasch model parameters to plot the ICCs{p_end} {phang2}{cmd:. irtgraph icc, blocation xlabel(,alt) legend(off)} {pstd}Predict the latent trait{p_end} {phang2}{cmd:. predict ability, latent} {marker results}{...} {title:Stored results} {pstd} {cmd:raschify} changes the following results: {synoptset 11 tabbed}{...} {p2col 5 15 19 2: Macros}{p_end} {synopt:{cmd:e(title)}}Rasch model{p_end} {p2col 5 15 19 2: Matrices}{p_end} {synopt:{cmd:e(b)}}coefficient vector, slope-intercept parameterization{p_end} {synopt:{cmd:e(V)}}variance-covariance matrix of the estimators{p_end} {p2colreset}{...} {marker authors}{...} {title:Authors} {pstd} Rafal Raciborski{break} {browse "mailto:rraciborski@gmail.com":rraciborski@gmail.com}{break}