At the moment I am analysing survey data using Bayesian estimation in R (bayesm package)

For my analysis, I have included a no-choice option that is coded as a series of zeros. However, I also have a price attribute. This price attribute has three levels but I would like to treat it as a linear attribute to calculate the willingness-to-pay.

The issue is that the zero values of the no-choice options act like 'real' values for the linear price leading to bias in my estimates.

Example data:

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Anyone familiar with this issue and/or workarounds?

  • $\begingroup$ Are you fitting a mixed effects model ? $\endgroup$ – Robert Long Jul 1 at 16:03

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