I am not quite clear what the question is here, but this may help:
SJ-7-3 pr0033 . . . . . . . . . . . . . . Stata tip 51: Events in
intervals
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N.
J. Cox
Q3/07 SJ 7(3):440--443 (no
commands)
tip for counting or summarizing irregularly spaced
events in intervals
See also -disjoint- and -spellutil- on SSC.
Nick
[email protected]
[email protected]
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 ?
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
