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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 |
Tue, 20 Nov 2012 13:31:48 +0000 |

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/

**Follow-Ups**:**Re: st: example about choice experiment datasheet***From:*elisabetta capobianco <elisabetta.capobianco@gmail.com>

**References**:**st: example about choice experiment datasheet***From:*elisabetta capobianco <elisabetta.capobianco@gmail.com>

**Re: st: example about choice experiment datasheet***From:*"JVerkuilen (Gmail)" <jvverkuilen@gmail.com>

**Re: st: example about choice experiment datasheet***From:*elisabetta capobianco <elisabetta.capobianco@gmail.com>

**Re: st: example about choice experiment datasheet***From:*Arne Risa Hole <arnehole@gmail.com>

**Re: st: example about choice experiment datasheet***From:*elisabetta capobianco <elisabetta.capobianco@gmail.com>

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