--- Chiara Mussida <[email protected]> wrote:
> but it is a little confusing: my model is a piecewise constant,
> estimated with the commsnad stpiece, but the example below shows a
> streg ans stsplit...
-stpiece- does the same thing as I did in my example, however in order
to predict you need to make sure that the restructuring of the data,
and the new variables -stpiece- makes while estimating the model remain
in memory when the command finishes. You can do that with the
-nopreserve- option.
*-------------- begin example ----------------
sysuse cancer, clear
sum age
replace age = age-r(mean)
gen id = _n
stset studytim, failure(died) id(id)
xi: stpiece i.drug age, tp(5 10 20) nopreserve
adjust _Idrug_2=0 _Idrug_3=0 age=0, gen(xb)
gen haz = exp(xb)
twoway line haz _t0, c(J) sort
*--------------- end example ------------------
(For more on how to use examples I sent to the Statalist, see
http://home.fsw.vu.nl/m.buis/stata/exampleFAQ.html )
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/
-----------------------------------------
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