st: foreach/forvalue-loop

["Künzel Sven" <s.kuenzel@tu-braunschweig.de>]

Dear Statalist,

I tried to program a code. An excerpt from the code can be seen below. 
As you can see I tried to program a part of a t-test. At first I 
program several "windows" which have different durations. As a second 
step I summarize the "averagedeltachange" for every window. And as a 
third I drop the variable "t_test_window". As you can see I am 
reproducing the same code for every window. Now I would like to 
abbreviate the length of the code by using a foreach/forvalue-loop but 
I am not quite sure if this is possible at all? And how it would have 
to look like?

Thanks for helping me.

/*window t=-10 bis t=-6*/
gen t_test_window=1 if dif >=-10 & dif <=-6 & id==1
egen estimationt_test_window3 = sum(averagedeltachange) if 
t_test_window==1
drop t_test_window

/*window t=-5 bis t=-1*/
gen t_test_window=1 if dif >=-5 & dif <=-1 & id==1
egen estimationt_test_window4 = sum(averagedeltachange) if 
t_test_window==1
drop t_test_window

/*window t=0 bis t=1*/
gen t_test_window=1 if dif >=0 & dif <=1 & id==1
egen estimationt_test_window5 = sum(averagedeltachange) if 
t_test_window==1
drop t_test_window

/*window t=2 bis t=5*/
gen t_test_window=1 if dif >=2 & dif <=5 & id==1
egen estimationt_test_window6 = sum(averagedeltachange) if 
t_test_window==1
drop t_test_window





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