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| From | "Macquet, Laure (Student)" <macqulmn@aston.ac.uk> |
| To | "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu> |
| Subject | st: RE: missing standard error in multinomial logit |
| Date | Wed, 8 Aug 2012 18:04:37 +0000 |
Hello all, I am trying to estimate the impact of some specificities of e-commerce firms on their choice for entry mode through a multinomial logit regression. The entry modes are the dependent variable: Acquisition, Joint Venture, Partnership, Greenfield In my independent variables, amongst others, I have two dummies: WEB (1 if the acquired/partnering firm is an online firm, 0 otherwise) BM (1 if the acquired/partnering firm is a brick and mortar firm, 0 otherwise) When I run the regression with all the independent variables, the number of iterations is really big (around 45) and some lines within the table have missing values except from the coefficient. I suspect the two dummies to be the issue but I cannot really get rid of any of them... Indeed, WEB=0 does not necessarily means that BM=1 for the same observation since in the case of Greenfield, WEB=BM=0 (there is no acquired/partnering firm). Can anybody help me on this? Thanks very very much ! Laure * * 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/