choice-metrics.com

Dear Michiel and JOhn
thank you very much for your help!
I modified the desing which now is:

?Sintassi da utilizzare
Design
;alts = SQ, AltB, AltC, AltD
;rows =4
;eff = (mnl,d)
;con
;model:
U(AltB) = b4[-0.2563516] + b2[0.00000001] * Bt1[0,1] + b3[-0.013]* Ct1[50,90,160,300] /
U(AltC) = b5[1 ...

Hi, I have set this syntax to be run on NGENE with 3 alternatives and for each one of them there is a different constant coefficient. This is a labeled DCE and the third option is the preferred one in the pilot as it is possible to see from the coefficients. Unfortunately, the final design seems not ...

Thank you for your prompt reply Johnr but there is still a problem with the desing generated...
For many scenario the values of b1 for semijet is higher than jet and integrale .. it seems that the code ignore my condition.
Sorry for this
Kind Regards
Fabio

Dear Ngeners,
I am working on a labelled design with status quo for a pivot study (to get priors) with an attribute (b1) constraint, the level of b1 (possible values:1,2,3,4) of demijet should always be lower than jet and integral. Jet and Integral can have the same values or Jet should be lower ...