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Mean of Theta draws and original mean part-worths are not similar

Hi at all,

I was conducting a CBC/HB with one continous covariate. I read the technical paper about covariates and CBC/HB, and there they show that their intercept-values are nearly the same like the original mean part-worths. But in my dataset, it's not like that, they are different. Did I make a mistake or is my data not good enough? The counts analysis showed, that the groups differe just in one attribute....

I hope you understand my concern and that someone can help me...

Best regards Lena
asked Jul 14, 2015 by Lena

1 Answer

0 votes
This is only the case if your continuous covariate variables are zero-centered.
answered Jul 14, 2015 by Bryan Orme Platinum Sawtooth Software, Inc. (150,315 points)
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