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| From | Joerg Luedicke <joerg.luedicke@gmail.com> |
| To | statalist@hsphsun2.harvard.edu |
| Subject | Re: st: playing with coefficients |
| Date | Fri, 23 Mar 2012 08:39:25 -0700 |
For binary variables it actually won't matter which operator you choose, but using the operator -i.- for them makes life easier when you subsequently want to use -margins- (at least as of Stata 11.2 which I still use; don't know if something has changed with Stata 12). J. On Fri, Mar 23, 2012 at 8:26 AM, Chiara Mussida <cmussida@gmail.com> wrote: > ok, > therefore if I already have a dummy and I want to use it in my > independent variables set, e.g. child (=1 for the presence of child, 0 > otherwise), I put in my > reg of lwage, do I use i.child? > > On 23/03/2012, Richard Williams <richardwilliams.ndu@gmail.com> wrote: >> At 10:08 AM 3/23/2012, Chiara Mussida wrote: >>>I got it: for categorical variable c.namevariable, and for dummy >>>variables? or continuous variable? >> >> c.var means var is continuous; i.var means var is categorical and >> Stata will, in effect, make dummy variables out of it. >> >> >> ------------------------------------------- >> Richard Williams, Notre Dame Dept of Sociology >> OFFICE: (574)631-6668, (574)631-6463 >> HOME: (574)289-5227 >> EMAIL: Richard.A.Williams.5@ND.Edu >> WWW: http://www.nd.edu/~rwilliam >> >> * >> * 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/ >> > > > -- > Chiara Mussida > PhD candidate > Doctoral school of Economic Policy > Catholic University, Piacenza (Italy) > * > * 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/