The test statement should be (at least for Stata 9.2)
test [f0_mean = f1_mean]
Or for just one variable,
test [f0_mean]weight= [f1_mean]weight
Scott
> -----Original Message-----
> From: [email protected] [mailto:owner-
> [email protected]] On Behalf Of Friedrich Huebler
> Sent: Friday, June 09, 2006 12:02 PM
> To: [email protected]
> Subject: st: suest after regress: equation not found
>
> I would like to compare regression coefficients across groups. I use
> Stata 8.2 and tried to adapt the code in the Reference Manual entry
> for -suest-, under the heading "Testing cross-model hypotheses" (p.
> 139 in my copy of the manual). I am not familiar with -suest- and my
> commands return the error message "[equation] not found ". What am I
> doing wrong?
>
> . sysuse auto, clear
> . regress mpg weight if foreign==0, score(f0)
> . est store f0
> . regress mpg weight if foreign==1, score(f1)
> . est store f1
> . suest f0 f1
> . test _b[f0]=_b[f1]
> [f0] not found
> r(111);
>
> . test [f0=f1]
> equation f0 not found
> r(303);
>
> Friedrich Huebler
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