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| From | Anders Alexandersson <andersalex@gmail.com> |
| To | statalist@hsphsun2.harvard.edu |
| Subject | Re: st: Nested Logit Model |
| Date | Thu, 15 Jul 2010 11:30:25 -0400 |
Marc, try -nlogitgen- and -nlogittree- before running -nlogit-, as in the helpfile. Please provide what you typed instead of schematic syntax like "[explanatory variables]", e.g., what is your "altvar"? Anders Alexandersson andersalex@gmail.com On Thu, Jul 15, 2010 at 10:22 AM, Marc Michelsen <marcmichelsen@t-online.de> wrote: > I am trying to run a nested logit model comparable to Huang/Ritter (2009) > "Testing Theories of Capital Structure and > Estimating the Speed of Adjustment", p. 253: > 2-layered Security Issuance Decision: Limbs: NoIssue vs. Issue / Branches > for "Issue": Debt Issuance vs. Equity Issuance. > > Similar to the above mentioned study, I have the same explanatory variables > for the first decision layer (Issue vs. NoIssue) and the second layer (Debt > vs. Equity). Apparently, this is not valid for Stata as I get the following > error message: > <"variables ".." are specified in more than one equation; this is not > allowed> > > My command looks the following: > . nlogit d a || issuetype: [explanatory variables], base(NonIssuer) || > issuetype2: [explanatory variables], base(NoIssue) case(No) notree nolog > > What is wrong with my model specification/general approach? * * 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/