Dear Alvine,
Please take a look at what follows:
------------------begin example-----------------------
g begin_2 = date( begin,"dm20y")
format begin_2%d
g end_2 = date( end,"dm20y")
format end_2%d
g time= end_2- begin_2
g time_0=time if treat==0
g time_1=time if treat==1
-------------------end example------------------------
HTH and Kind Regards,
Carlo
[email protected] wrote:
Dear all,
My data deals with subjects who receive 1, 2 or more treatements over time.
We want to know how many time they spent with 1 treatment, 2 treatments, 3
treatments , ...
Data 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
How can I calculate time spent with 1 treat for id=1, time spent with 2
treat
for id=1, ...
Maybe with after data has been stset ?
Thank you for help !
Alvine Bissery
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* For searches and help try:
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* http://www.ats.ucla.edu/stat/stata/
