Hi Stephane,
I am estimating models for a standard DCE that includes an opt-out option. I have looked at the other discussions on this forum about similar topics but am still unsure how to set up my dataset to include an opt-out option. There are 3 alternatives in each choice set and an opt-out. I have three variables, let's call them pu, meb, and sc. I have therefore created variables pu1, pu2, pu3, meb1, meb2, meb3, sc1, sc2, sc3 in my dataset. So, I have accounted for the three alternatives. But what do I do about the opt-out option?
Thanks,
Mara
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No-choice option
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Re: No-choice option
Mara
if your opt-out has attributes, then they need to be included in the data. If the opt-out does not have attributes, then nothing is needed in the data and you can just estimate a constant for the opt-out
Stephane
if your opt-out has attributes, then they need to be included in the data. If the opt-out does not have attributes, then nothing is needed in the data and you can just estimate a constant for the opt-out
Stephane
Re: No-choice option
Thanks Stephane. How do I code the “choice” variable (which specifies the option the respondent chooses in each choice set) when a respondent chooses the opt-out option? With three alternatives, do I code it as 4? Or some other way?
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- Site Admin
- Posts: 998
- Joined: 24 Apr 2020, 16:29
Re: No-choice option
Mara
however you want. You will have a column in your data with the choice variable. Whatever number you use there for the no choice needs to then be used also in the Apollo code.
Stephane
however you want. You will have a column in your data with the choice variable. Whatever number you use there for the no choice needs to then be used also in the Apollo code.
Stephane