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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