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Dear Michiel and Ngene expert

Thank you very much for fast response and sorry for unclear question.

1. It means that if I do not do a pilot study, It is possible to use syntax as your recommendation for total sample size. Is there any effect to the design.

2. Please explain me about this syntax ...

Dear Michiel and Ngene expert

Thank you very much for your suggestion in previous reply. Therefore, I decide to use continuous variable as your recommendation.
I try to think about my syntax in case of no data prior. And My additional question is that
1. Efficacy attribute is 3 level (low moderate ...

Dear Ngene expert
Thank you very much for your suggestion in previous reply.
This is my revised syntax:
Design
? This will generate a simultaneous orthogonal fractional factorial design with three blocks Design
;alts = Drug A, Drug B, neither
;rows = 36
;eff = (mnl,d).
;orth = seq
;block = 6 ...

Hi
I have some question about program. I will describe a little bit about my data which consist of 5 attributes
1. Efficacy (low, moderate, high)
2. GI side effect (Yes, No)
3. Kidney side effect (Yes, No)
4. Slow disease progression (None, Moderate)
5. Price per month (<500, 501-1000, >1000 ...