--- Chiara Mussida <[email protected]> wrote:
> does somebody know how to graph a piecewise constant baseline hazard?
See (Cleves et al. 2004, pp. 215-222) and the example below:
*------------ begin example -------------------
sysuse cancer, clear
sum age
replace age = age-r(mean)
gen id = _n
stset studytime, failure(died) id(id)
stsplit time, at(5 10 20)
xi: streg i.time i.drug age, dist(exp)
adjust _Idrug_2=0 _Idrug_3=0 age=0, gen(xb)
gen haz = exp(xb)
twoway line haz time, c(J) sort
*---------- end example -----------------------
Mario Cleves, William W. Gould, and Roberto G. Gutierrez (2004) "An
Introduction to Survival Analysis Using Stata", College Station: Stata
Press. http://www.stata-press.com/books/saus.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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