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| From | Arne Risa Hole <arnehole@gmail.com> |
| To | statalist <statalist@hsphsun2.harvard.edu> |
| Subject | Re: st: example about choice experiment datasheet |
| Date | Fri, 23 Nov 2012 12:02:39 +0000 |
-help asclogit_postestimation- Arne On 23 November 2012 11:05, elisabetta capobianco <elisabetta.capobianco@gmail.com> wrote: > Dear Arne, > i need to estimate the marginal effect of levels on attributes of my choice. > Is it possible? > es: > about meat: > attribute level > label organic/not organic > origin local abroad > prize 4/8 > > I would know the utility for each level of each attribute. > > Thank you! > elisabetta > > > > 2012/11/21 elisabetta capobianco <elisabetta.capobianco@gmail.com>: >> Thank you so much Arne!!! >> I'm creating the data set and then i'll try to run in Stata! >> >> Elisabetta >> >> 2012/11/20 Arne Risa Hole <arnehole@gmail.com>: >>> Elisabetta >>> >>> -mlogit- is not very useful to model data from choice experiments as >>> it does not allow alternative-specific explanatory variables. >>> -asclogit- requires your data to be in long form (one row per >>> alternative); see -help asclogit- and the first example in the paper I >>> mentioned in my last email. >>> >>> Arne >>> >>> On 20 November 2012 10:04, elisabetta capobianco >>> <elisabetta.capobianco@gmail.com> wrote: >>>> Thank you Arne, I want to use asclogit and mlogit for my choice modelling. >>>> >>>> >>>> 2012/11/19 Arne Risa Hole <arnehole@gmail.com>: >>>>> Elisabetta >>>>> >>>>> As Jay says the correct data form depends on the estimation command >>>>> you are planning to use, so this is a very important piece of >>>>> information that you haven't given us. You may find the examples in >>>>> http://www.stata-journal.com/article.html?article=st0133 useful. >>>>> Generally speaking the best strategy is to import the data into Stata >>>>> and then use commands like -reshape- to convert the data into the form >>>>> you want, rather than trying to do this in Excel. >>>>> >>>>> Arne >>>>> >>>>>> On 19 November 2012 15:51, elisabetta capobianco >>>>>> <elisabetta.capobianco@gmail.com> wrote: >>>>>>> >>>>>>> Thank you for your answer! >>>>>>> I want to do a mixed logit, but I have found a data set on help file >>>>>>> with just one choice set. I have 16 choice sets and I don't know how >>>>>>> to fil the excel data set. >>>>>>> >>>>>>> >>>>>>> >>>>>>> 2012/11/18 JVerkuilen (Gmail) <jvverkuilen@gmail.com>: >>>>>>> > On Sun, Nov 18, 2012 at 4:11 AM, elisabetta capobianco >>>>>>> > <elisabetta.capobianco@gmail.com> wrote: >>>>>>> >> Hi, I'm new of statalist and stata! >>>>>>> >> I'm working on choice experiment about food preferences in schools. >>>>>>> >> I have 4 alternatives unlabelled, 4 attributes and 4 levels, 130 >>>>>>> >> individuals. >>>>>>> >> I have the data base in excel, but before insheet the file in stata >>>>>>> >> i'm not sure that i have put the data in the right mode in the excel >>>>>>> >> file. >>>>>>> >> Have you got an example on a excel datasheet about choice modelling? >>>>>>> >> Just an example to understand how to organize my datasheet. >>>>>>> > >>>>>>> > It depends on what analysis you want to use. -clogit- and procedures >>>>>>> > like it that are using alternative-specific predictors use the same >>>>>>> > basic format, which is specified in the help file. You can see the >>>>>>> > example dataset there. Essentially it is a "long" format like >>>>>>> > person-period in a growth model with time-varying covariates. >>>>>>> > * >>>>>>> > * For searches and help try: >>>>>>> > * http://www.stata.com/help.cgi?search >>>>>>> > * http://www.stata.com/support/faqs/resources/statalist-faq/ >>>>>>> > * http://www.ats.ucla.edu/stat/stata/ >>>>>>> >>>>>>> >>>>>>> >>>>>>> -- >>>>>>> Rispetta l'ambiente: se non ti è necessario, non stampare questa mail >>>>>>> >>>>>>> >>>>>>> >>>>>>> Le informazioni contenute in questa comunicazione e gli >>>>>>> eventuali documenti allegati >>>>>>> >>>>>>> hanno carattere confidenziale e sono a uso esclusivo del >>>>>>> destinatario. Nel caso >>>>>>> >>>>>>> questa comunicazione Vi sia pervenuta per errore, Vi informo >>>>>>> che la sua diffusione >>>>>>> >>>>>>> e riproduzione è contraria alla legge e prego di darmi >>>>>>> prontamente avviso >>>>>>> >>>>>>> e di cancellare quanto ricevuto. Grazie. >>>>>>> >>>>>>> * >>>>>>> * For searches and help try: >>>>>>> * http://www.stata.com/help.cgi?search >>>>>>> * http://www.stata.com/support/faqs/resources/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/faqs/resources/statalist-faq/ >>>>> * http://www.ats.ucla.edu/stat/stata/ >>>> >>>> >>>> >>>> -- >>>> Rispetta l'ambiente: se non ti è necessario, non stampare questa mail >>>> >>>> >>>> >>>> Le informazioni contenute in questa comunicazione e gli >>>> eventuali documenti allegati >>>> >>>> hanno carattere confidenziale e sono a uso esclusivo del >>>> destinatario. Nel caso >>>> >>>> questa comunicazione Vi sia pervenuta per errore, Vi informo >>>> che la sua diffusione >>>> >>>> e riproduzione è contraria alla legge e prego di darmi >>>> prontamente avviso >>>> >>>> e di cancellare quanto ricevuto. Grazie. >>>> >>>> * >>>> * For searches and help try: >>>> * http://www.stata.com/help.cgi?search >>>> * http://www.stata.com/support/faqs/resources/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/faqs/resources/statalist-faq/ >>> * http://www.ats.ucla.edu/stat/stata/ >> >> >> >> -- >> Rispetta l'ambiente: se non ti è necessario, non stampare questa mail >> >> >> >> Le informazioni contenute in questa comunicazione e gli >> eventuali documenti allegati >> >> hanno carattere confidenziale e sono a uso esclusivo del >> destinatario. Nel caso >> >> questa comunicazione Vi sia pervenuta per errore, Vi informo >> che la sua diffusione >> >> e riproduzione è contraria alla legge e prego di darmi >> prontamente avviso >> >> e di cancellare quanto ricevuto. Grazie. > > > > -- > Rispetta l'ambiente: se non ti è necessario, non stampare questa mail > > > > Le informazioni contenute in questa comunicazione e gli > eventuali documenti allegati > > hanno carattere confidenziale e sono a uso esclusivo del > destinatario. Nel caso > > questa comunicazione Vi sia pervenuta per errore, Vi informo > che la sua diffusione > > e riproduzione è contraria alla legge e prego di darmi > prontamente avviso > > e di cancellare quanto ricevuto. Grazie. > > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/faqs/resources/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/faqs/resources/statalist-faq/ * http://www.ats.ucla.edu/stat/stata/