--- Rachele Capocchi <[email protected]> wrote:
> I tried tried:
>
> . adjust wei, by(rep) se ci
>
> and I obtained the adjusted means of the groups, but I don't know how
> I can obtain the overall mean.
sysuse auto, clear
recode rep78 1/2 = 3
xi: reg mpg i.rep78 wei
adjust wei, se ci
adjust wei, se ci by(rep78)
The problem was that anova turned rep78 into a series of dummies, but
did not leave those dummies behind after it finished. Th variables that
aren't mentioned anywhere in the -adjust- command are left as is, but
if they no longer exist Stata doesn't know what to do and reports
nothing. So doing all this explicitly in -regress-, the variables are
left behind, and -adjust- has no problems. Notice that -regress- and
-anova- are in many cases completely equivalent, so nothing is lost by
moving from -anova- to -regress-.
Hope this helps,
Maarten
-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands
visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434
+31 20 5986715
http://home.fsw.vu.nl/m.buis/
-----------------------------------------
___________________________________________________________
Want ideas for reducing your carbon footprint? Visit Yahoo! For Good http://uk.promotions.yahoo.com/forgood/environment.html
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
