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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 |
Wed, 5 Dec 2012 21:09:44 +0000 |

Elisabetta The short answer is "yes, maybe". The long answer is long enough to write a whole book about it; see Hensher et al. which I mentioned earlier and http://elsa.berkeley.edu/books/choice2.html. Arne On 4 December 2012 12:12, elisabetta capobianco <elisabetta.capobianco@gmail.com> wrote: > Dear Arne, > the main concern about the conditional logit model is its assumption > of independence from > irrelevant alternatives (IIA). This assumption implies that the > probability ratio of individuals > choosing between two alternatives does not depend on the availability > or attributes of the other > alternatives. > I have 4 alternatives for each choice set, so it's important to me to > surmount the IIA, and it's better using mixlogit than asclogit, isn't > it? > > Thank you, > elisabetta > > > > 2012/11/27 Arne Risa Hole <arnehole@gmail.com>: >> You are welcome. -mixlogit- implements the same model as -asclogit- >> but with random coefficients. You should make sure that you understand >> the differences between the models before moving on to -mixlogit-, as >> this is a more complicated model. >> >> Arne >> >> On 27 November 2012 05:31, elisabetta capobianco >> <elisabetta.capobianco@gmail.com> wrote: >>> Dear Arne, >>> you're my very helpful, thank you so much. >>> Now i'm trying to use mix logit, I've ridden your article. It seems to >>> be better than asclogit, because i have different alternatives on N >>> choices occasion. Is it more correct for my case, isn't it? >>> >>> Thank you! >>> >>> elisabetta >>> >>> 2012/11/26 Arne Risa Hole <arnehole@gmail.com>: >>>> This is to be expected; if you found it surprising you need to read >>>> the -asclogit- manual entry more carefully. Whether it's correct or >>>> not really depends on what you are trying to do. I would suggest that >>>> including socio-demographics in your model only makes sense if you >>>> interact them with the alternative-specific attributes, since your >>>> alternatives are unlabelled. >>>> >>>> Arne >>>> >>>> On 26 November 2012 10:43, elisabetta capobianco >>>> <elisabetta.capobianco@gmail.com> wrote: >>>>> Ok Arne, >>>>> now It's clear and I have had good results. >>>>> Just a doubt. When I put inside the socio-demographic variables, the >>>>> output has the four alternatives 1,2,3,4, even if I write nocons. >>>>> I don't understand the meaning of this output considering that I have >>>>> unlabelled alternatives. >>>>> Is however correct this result? >>>>> >>>>> Thank you, >>>>> Elisabetta >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> 2012/11/24 Arne Risa Hole <arnehole@gmail.com>: >>>>>> Elisabetta, >>>>>> >>>>>> The "case" variable must a unique identifier for each choice. You can >>>>>> generate it like this >>>>>> >>>>>> egen caseid = group(id scenario) >>>>>> >>>>>> The "alt" variable should be coded 1,2,3,4,1,2,3,4 etc. (not >>>>>> 1,2,3,4,5,6,7,8,...). >>>>>> >>>>>> Arne >>>>>> >>>>>> On 24 November 2012 16:04, elisabetta capobianco >>>>>> <elisabetta.capobianco@gmail.com> wrote: >>>>>>> Thank you Arne, I have taken the book. >>>>>>> My problem is that I have 16 scenarios for id (n=131) with 4 different >>>>>>> alternatives for each scenario . >>>>>>> So in the dataset I have written for each id non 4 alternatives >>>>>>> (1,2,3,4) but 64 alternatives. Is it correct? >>>>>>> >>>>>>> >>>>>>> >>>>>>> id scenario alt >>>>>>> 1 1 1 >>>>>>> 1 1 2 >>>>>>> 1 1 3 >>>>>>> 1 1 4 >>>>>>> 1 2 5(or1?) >>>>>>> 1 2 6(or2?) >>>>>>> 1 2 7(or3?) >>>>>>> 1 2 8 (or4?) >>>>>>> 1 3 9(or1?) >>>>>>> . >>>>>>> . >>>>>>> . >>>>>>> . >>>>>>> . >>>>>>> 1 16 64 >>>>>>> 2 1 1 >>>>>>> . >>>>>>> . >>>>>>> And when I wrote: >>>>>>> asclogit choice organic price, case(id) alternatives(car) noconst >>>>>>> >>>>>>> case is id or scenario? I suppose scenario. But if is scenario I don't >>>>>>> know how to use id! >>>>>>> And alternatives are the 64 alternatives? >>>>>>> >>>>>>> >>>>>>> Thank you so much for your help. >>>>>>> >>>>>>> elisabetta >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>> 2012/11/23 Arne Risa Hole <arnehole@gmail.com>: >>>>>>>> Elisabetta >>>>>>>> >>>>>>>> I am fairly sure that you can use -asclogit- to do what you want. If >>>>>>>> you don't want alternative-specific constants you can use the >>>>>>>> -noconst- option. Modifying the example in the help-file slightly: >>>>>>>> >>>>>>>> webuse choice >>>>>>>> asclogit choice dealer, case(id) alternatives(car) noconst >>>>>>>> >>>>>>>> As you can see the only coefficient which is estimated in this case is >>>>>>>> the one for the dealer attribute, which is analogous to the organic >>>>>>>> and price attributes in your experiment. In your case the variable >>>>>>>> that identifies the alternatives for each case ("car" in the example) >>>>>>>> can simply take the values 1, 2, 3 and 4 since your alternatives are >>>>>>>> unlabelled. >>>>>>>> >>>>>>>> I also recommend taking a look at a basic choice modelling text before >>>>>>>> proceeding, such as >>>>>>>> http://books.google.co.uk/books/about/Applied_Choice_Analysis.html?id=8yZrtCCABAgC. >>>>>>>> >>>>>>>> Good luck! >>>>>>>> >>>>>>>> Arne >>>>>>>> >>>>>>>> On 23 November 2012 13:25, elisabetta capobianco >>>>>>>> <elisabetta.capobianco@gmail.com> wrote: >>>>>>>>> I think that asclogit is not the right comand for me. >>>>>>>>> Because I have 4 unlabeled alternatives, 16 diferrent scenarios with 4 >>>>>>>>> alternatives for 131 individuals. So my indipendent viariables are the >>>>>>>>> attributes and dipendent variables the utility for each level of >>>>>>>>> attribute. >>>>>>>>> I need to know the importance of every level, not of alternatives. >>>>>>>>> Ex.:n=131 >>>>>>>>> scenario 1) A B C D >>>>>>>>> organic org no org no org org >>>>>>>>> price 4 8 4 4 >>>>>>>>> scenario 2) A B C D >>>>>>>>> organic no org no org org no org >>>>>>>>> price 12 16 8 8 >>>>>>>>> . >>>>>>>>> . >>>>>>>>> . >>>>>>>>> Perhaps with mixlogit? Because the example is on a specific >>>>>>>>> alternative, car or bus. >>>>>>>>> I instead need to know the coefficient of attributes and levels. >>>>>>>>> >>>>>>>>> I don't know if I have explained well, I hope! >>>>>>>>> >>>>>>>>> e >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> 2012/11/23 Arne Risa Hole <arnehole@gmail.com>: >>>>>>>>>> -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/ >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> -- >>>>>>>>> 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. >>>>> >>>>> * >>>>> * 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. > > * > * 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**:**Re: st: example about choice experiment datasheet***From:*elisabetta capobianco <elisabetta.capobianco@gmail.com>

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