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90 lines
3.3 KiB
Plaintext
90 lines
3.3 KiB
Plaintext
9 months ago
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.-
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help for ^torumm^
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^Format and transfer data to RUMM^
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-------------------------------
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syntax varlist [, FILEname(string) FACTors(string) IDvar(varname) REVerse ]
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^Description^
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-----------
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^torumm^ prepares a Stata dataset for analysis in ^RUMM^), a Rasch analysis
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package. Two control files (.spc .itm) and a data file (.dat) are created
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using using the Stata ^outsheet^ and outfile commands. ^torumm^ is
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non-destructive in that does not alter the Stata data. ^varlist^
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refers to the variables that will be studied in the Rasch analysis. The
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"factor" variables are categorical variables that subset the analyses.
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^Options^
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-------
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^FILEname(string)^: the name of the files to be saved as -spc-, itm- and
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-dat- files in Rumm.
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^FACTors(varlist)^: the factorial or categorical variables (subsetting).
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Rumm only allows 3 factors. Factor label cannot be longer than 5 characters.
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^IDvar^: the name of the ID variable. This can be up to 5 charters in length
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or between 0 and 99,999, if numeric.
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^REVerse^: varlist of variables that are reversed scored.
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^Comments^
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--------
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The current version of ^torumm^ has a number of restrictions: (1) only
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numeric variables are allowed in the varlist and list of factor variables.
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(2) only integers between 0-9 are to be used for the varlist and factor
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variable values. (3) This version of ^torumm^ suuports rating scale
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but not multiple choice variables. By default the RUMM variable ^testType^
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has been set to E for extended or polytomous (rating scale). In addition,
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^respType^ has been set to the default of N (numeric). (4) Because of
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the 80 character string limitation on Stata,a maximum of 69 variables
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should be entered as the varlist in order to stay within the 80 character
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limitation.
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^Sort order of the variables^ If you want a special order to the variables
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be sure to order the variables in the desired order with ^order^.
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The number of responses or ^respNum^ is calculated from min and max values.
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If the item does not have a score at the minumum or maximum value then
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the ^respNum^ will be incorrect (in one sense). ^respNum^ should be checked
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by viewing the program output or by hand in the RUMM editor or a spread sheet
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to be sure the calculated values are correct.
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The lowest code number for the responses or ^respSeq^ is calculated
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from the minimum value. If the item does not have a score at the minumum
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value then the ^respSeq^ will be incorrect (in one sense). ^respSeq^ should
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be checked in the program output or by hand in the RUMM editor or a spread
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sheet to be sure the calculated values are correct.
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^torumm^ makes use of value labels, if present, otherwise it uses numeric
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codes. Similarly, variables labels are used when present; if not present,
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variable name is substituted for the variable label.
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If Stata 6.0 is being used, ^torumm^ requires the presence of -vallist-,
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-tostring- and -bothlist-, programs of Nick Cox that are available on the BC
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Archives. ^torumm^ also works with Stata 7.0.
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^Examples^
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--------
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. torumm mcp_eros - m_nav_n1, file(shrumm) id(newpat) rev(mcp_nar1 mcp_nar2)
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. torumm mcp_eros - m_nav_n1, file(shrumm) id(patkey) factors(durgroup)
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^Author^
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------
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Fred Wolfe
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National Data Bank for Rheumatic Diseases
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fwolfe@@arthritis-research.org
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