FACTREF: Stata module to insert new observations with reference values for factors

Roger Benedict Newson ()

Statistical Software Components from Boston College Department of Economics

Abstract: factref is used with factext, descsave, parmby and parmest (q.v.). It takes, as input, a data set created by parmby or parmest, in which categorical variables (factors) have been created by descsave and factext. These factors are variables (numeric or string) representing categorical variables in the fitted model, represented by dummy variables such as those created by xi. factref adds to that data set a set of additional observations with reference values for these factors, copied from the omit characteristic for each factor. For each factor, factref creates one reference observation if there are non-missing values for the factor and there is no by-variable list, or one reference observation for each by-group where there are non-missing values of the factor if there is a by-variable list. After the reference observations have been added, the user may create a plot or table of confidence intervals for factor effects.

Language: Stata
Requires: Stata version 7.0
Keywords: data; manipulation (search for similar items in EconPapers)
Date: Written 2001-07-06
Note: This module may be installed from within Stata by typing "ssc install factref". Windows users should not attempt to download these files with a web browser.

Downloads: (external link)
http://fmwww.bc.edu/repec/bocode/f/factref.ado program code (text/plain)
http://fmwww.bc.edu/repec/bocode/f/factref.hlp help file (text/plain)

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