How the D-error value should be?
Posted:
Thu Apr 29, 2021 1:43 amby sukunta
Dear Prof. Michiel,
I run the syntax
- Code: Select all
design
;alts=alt1*,alt2*,alt3
;rows=12
;eff=(mnl,d)
;con
;model:
U(alt1)=b0[0.000001]+b1.dummy[0.000002]*private[1,0]+b2.dummy[0.000002]*open[1,0]+b3[0.000002]*time[10,20,30]+b4.dummy[0.000002|0.000001]*channel[2,1,0]/
U(alt2)=b0[0.000001]+b1*private+b2*open+b3*time+b4*channel
$
and D-error = 0.219443. Is that suitable for the pilot study?
Sincerely yours,
Sukunta
Re: How the D-error value should be?
Posted:
Thu Apr 29, 2021 8:11 amby Michiel Bliemer
Yes, any finite D-error (often below 1) should be fine, only D-errors that are Undefined or Infinite or very high (often above 1, 2, or 3) are suspicious and may indicate an issue in parameter identification.
D-errors are study specific, so there is no general rule on what a "good" D-error is.
Michiel
Re: How the D-error value should be?
Posted:
Thu Apr 29, 2021 12:56 pmby sukunta
Dear Prof.Michiel,
Thank you so much for your reply.
Sincerely yours,
Sukunta