Data from STATA files (version 13 and earlier)
STATA have changed the internal format of their .dta files in STATA version 14. To read a STATA 14 or later file with Winsteps, first in STATA,
. saveold filename13, version(13)
Then filename13.dta can be processed by Winsteps.
Winsteps control and data files can easily be constructed from STATA .dta files. Use the Excel/RSSST menu: STATA option:
Now follow the procedure at Excel/RSSST menu
You can simplify some of the variable selection if you construct your person variable in STATA using STATA instructions similar to:
Gen pname newvar = string(var1,"%05.0f") + string(var2,"%01.0f") + string(var1,"%01.0f") + string(var1,"%01.0f")
This becomes the person-name variable for Winsteps.
Alan Acock writes: Fred Wolfe has provided a Stata module which produces Winsteps control and data files. It is a Stata command that does two things:
1. It converts the data you want to analyze using Winsteps to a dataset that Winsteps can read.
2. It generates the Winsteps command file to do the analysis in Winsteps.
To install this command go to the command window in Stata and enter the following command:
ssc install raschcvt
This will find the command on the internet and install the command. You only need to run this once. Here is an example of how you would use the command. From an open session of Stata enter the following command in your command window:
raschcvt var1 var2 var3 var4 id , outfile(c:\Winsteps\testme) id(id) max(4)
This will generate a dataset for Winsteps and put it in the directory where Winsteps is located. The file will be called
This will also generate a command file called
and put it in the same directory as the data. This file may have a couple lines at the top and bottom that need to be edited out. The Rasch analysis will be performed on the variables that you list. In this example the variables are var1, var2, var3, and var4. The identification variable should be at the end of this list and happens to be called id in this example. It is important that each variable has a variable label in the Stata dataset as Wolfe's command assumes this when generating the command file. The outfile(c:\Winsteps\testme) after the comma determines the name and location of the two files created, the id(id) gives the name you select for the identification variable, and the max(4) gives the maximum score, in this case the variables have a maximum value of 4.
Use your editor to remove any lines at the top or bottom in the testme.con file that are superfluous. When you run Winsteps simply click on enter or file open, and then browse to find testme.con. When prompted for the output file name enter an appropriate name. When asked for special features simply press enter. This will run your data in Winsteps.
Help for Winsteps Rasch Measurement Software: www.winsteps.com. Author: John Michael Linacre
For more information, contact firstname.lastname@example.org or use the Contact Form
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|Rasch Measurement Transactions (free, online)||Rasch Measurement research papers (free, online)||Probabilistic Models for Some Intelligence and Attainment Tests, Georg Rasch||Applying the Rasch Model 3rd. Ed., Bond & Fox||Best Test Design, Wright & Stone|
|Rating Scale Analysis, Wright & Masters||Introduction to Rasch Measurement, E. Smith & R. Smith||Introduction to Many-Facet Rasch Measurement, Thomas Eckes||Invariant Measurement with Raters and Rating Scales: Rasch Models for Rater-Mediated Assessments, George Engelhard, Jr. & Stefanie Wind||Statistical Analyses for Language Testers, Rita Green|
|Rasch Models: Foundations, Recent Developments, and Applications, Fischer & Molenaar||Journal of Applied Measurement||Rasch models for measurement, David Andrich||Constructing Measures, Mark Wilson||Rasch Analysis in the Human Sciences, Boone, Stave, Yale|
|in Spanish:||Análisis de Rasch para todos, Agustín Tristán||Mediciones, Posicionamientos y Diagnósticos Competitivos, Juan Ramón Oreja Rodríguez|
|Winsteps Tutorials||Facets Tutorials||Rasch Discussion Groups|
|Coming Rasch-related Events|
|April 10-12, 2018, Tues.-Thurs.||Rasch Conference: IOMW, New York, NY, www.iomw.org|
|April 13-17, 2018, Fri.-Tues.||AERA, New York, NY, www.aera.net|
|May 22 - 24, 2018, Tues.-Thur.||EALTA 2018 pre-conference workshop (Introduction to Rasch measurement using WINSTEPS and FACETS, Thomas Eckes & Frank Weiss-Motz), https://ealta2018.testdaf.de|
|May 25 - June 22, 2018, Fri.-Fri.||On-line workshop: Practical Rasch Measurement - Core Topics (E. Smith, Winsteps), www.statistics.com|
|June 27 - 29, 2018, Wed.-Fri.||Measurement at the Crossroads: History, philosophy and sociology of measurement, Paris, France., https://measurement2018.sciencesconf.org|
|June 29 - July 27, 2018, Fri.-Fri.||On-line workshop: Practical Rasch Measurement - Further Topics (E. Smith, Winsteps), www.statistics.com|
|July 25 - July 27, 2018, Wed.-Fri.||Pacific-Rim Objective Measurement Symposium (PROMS), (Preconference workshops July 23-24, 2018) Fudan University, Shanghai, China "Applying Rasch Measurement in Language Assessment and across the Human Sciences" www.promsociety.org|
|Aug. 10 - Sept. 7, 2018, Fri.-Fri.||On-line workshop: Many-Facet Rasch Measurement (E. Smith, Facets), www.statistics.com|
|Sept. 3 - 6, 2018, Mon.-Thurs.||IMEKO World Congress, Belfast, Northern Ireland www.imeko2018.org|
|Oct. 12 - Nov. 9, 2018, Fri.-Fri.||On-line workshop: Practical Rasch Measurement - Core Topics (E. Smith, Winsteps), www.statistics.com|
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