MRDUM: Stata module to create dummy variables and summary table for multiple response data
Lee E. Sieswerda
mrdum searches across varlist for integer codes and creates corresponding dummy variables. Each dummy is equal to 1 if the integer code was found anywhere in varlist, 0 if not, and missing if all of varlist is missing. It also displays a table summarizing the results. This program was created specifically to deal with survey questions wherein the respondent can give multiple responses to a single question (e.g. "Check all that apply"). Sometimes these data are coded as a series of variables with the responses entered in the order that the respondent indicated them. Often, however, it is useful to have instead a set of dummy variables that indicate whether the respondent indicated a particular response regardless of the order in which it was indicated.
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