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From |
"Sarah Edgington" <sedging@ucla.edu> |

To |
<statalist@hsphsun2.harvard.edu> |

Subject |
st: RE: generate a new categorical variable |

Date |
Thu, 13 Sep 2012 13:32:23 -0700 |

Your code looks like it should work. My first thought is that you should double check that the data really looks like what you expect. I'd start with a cross-tabulation of Y and Z. For your code to work it has to be true that Y==1 when Z takes the B, C, and D values. Likewise, you want to be sure that you have all the values for Z (and that they're capitalized as shown and don't include spaces). -Sarah -----Original Message----- From: owner-statalist@hsphsun2.harvard.edu [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of urbain thierry YOGO Sent: Thursday, September 13, 2012 12:54 PM To: statalist@hsphsun2.harvard.edu Subject: st: generate a new categorical variable Dear all i have two variables Y and Z. Y is a dummy variable which takes 1 if individual has access to water and 0 otherwise. Z is a categorical variable which has the following structure: Z=A if individual uses bleach to clean water Z=B if individual use a filter to clean water Z=C if individual use solar energy to clean water Z=D if individual use absorbent cotton to clean water Here is my problem. I want to generate a new variable X which should be a combination of Y and Z. Here is the code i have written gen X=0 if Y==0 replace X=1 if Y==1 & Z=="A" replace X=2 if Y==1 & Z=="B" replace X=3 if Y==1 & Z=="C" replace X=4 if Y==1 & Z=="D" My concern is that when i write this code, the first two lines work, but after, there is 0 replacement. Please can somebody help me? Thank -- *Urbain Thierry YOGO Ph.D candidate in Economics* * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/ * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**References**:**st: generate a new categorical variable***From:*urbain thierry YOGO <yogout@gmail.com>

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