DCE Sample Size requirement using Louviere et al. (2000) formula?

22 May 2021 1 8K Report

I am about to use this formula for a Discrete Choice experiment with 4 attributes each contains 3 Level. Thus, I have some question that I am cordially requesting to get an answer for : - How to fixe the true proportion p as the the true choice proportion of the relevant population? - What relation can be provided between the DCE parameters (attributes, profiles ..) and the sample size calculation formula in term of fixing the minimum sample size required for the full study?

David Eugene Booth

You seem to be confused. The standard way is to choose p=0.5 , the largest value.p.can have and this gives the biggest variance and thus yields the minimum n to use. See any statisics book to follow such a calculation for the case of sampling proportions. Best wishes, David Booth

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