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st: RE: RE : R: Intervals time


From   "Nick Cox" <n.j.cox@durham.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   st: RE: RE : R: Intervals time
Date   Tue, 22 Apr 2008 16:05:37 +0100

Is this what you want? 

 gen duration = end - begin + 1
 drop if treat == 0
 expand dur
 bysort id begin : replace begin = begin[_n-1] + 1 if _n > 1
 l
 contract id begin

Nick
n.j.cox@durham.ac.uk 

alvine.bissery@chu-lyon.fr

Thank you Carlo, but this will not answer my question.
Maybe it was not clear !

Sata are as follows:

id	   begin	      end	   treat
1	04 Apr 2006	  06 Apr 2006	1
1	05 Apr 2006	  09 Apr 2006	0
1	08 Apr 2006	  12 Apr 2006	1
2	15 May 2006	  16 May 2006	1
2	16 May 2006	  24 May 2006	1
2	16 May 2006	  17 May 2006	1 

Subject 2 has only one treatment from 15 May 2006 to 16 May 2006.
Then he has two treatments from 16 May 2006 to 17 May 2006, and one
treatment
from 18 May 2006 to 24 May 2006.

This is the result I want to find !


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