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Hi all! I'm working on a DCE with two unlabeled alternatives, and a status quo option. I have ten total attributes, six of which are continuous, and four binary. I am using SurveyEngine as the platform to administer this DCE, and in the introduction I obtain the reference values for each of these ...

Michiel,

Great! I'll give that a go. One last question: when using constraints and pivoting in this way, how would I handle cases where a subject who has no copay enters their reference value as $0, or a subject who has strong dislike for their current facility rates it 0 stars? In the pivot design ...

Michiel,

That makes sense-- my question then is how to tell NGene that there is a categorical attribute in a reference alternative that is the same across choice tasks for an individual?

Jamie

Michiel,

I've gotten a library of designs made, that is working well and will be a great basis for a pilot to improve for the final design. I've done a little bit of digging, and I think I'll be able to get a pivot design working in Qualtrics, with a little doing. I took a stab at transitioning my ...

Michiel,

That sounds like it may be the best approach, here! In a "library of designs" method, how do you interpret the S-estimate of each design? Do you assume that you only need to exceed the sample size for one of the designs, as everything about the designs is similar except the levels being ...

Michiel,

Thank you for the detailed reply! I've updated my categorical attributes to be dummy coded. Per your reply, I think I need to change the source of my priors, in that case, as we are looking to use different levels (and some new attributes) from the previous study, so it makes sense that ...

Hi all!
I'm pretty new to NGene still, and I'm trying to design an unlabelled DCE with three alternatives which vary on eight attributes. It will be a blocked design, with two arms-- arm A asks about one type of medical imaging, arm B another. Each arm will have two blocks: one for uninsured ...

Hi all! I'm looking for some insight into a pair of NGene designs created to investigate how 911 providers (EMTs) triage injured patients, using two DCEs. I have two choice scenarios: a motor vehicle accident, and a fall from height. Attributes and levels were determined from literature and existing ...