On 27 Ean 2009, at 10:28, moleps islon wrote:
Dear statalisters,
I need to prepare a combined Kaplan Meier graph incorporating both
progression-free survival and overall survival in addition to
risktables. Since the event is different I rely on using stset for
each instance and then sts graph, however however graph combine
refuses to display the two graphs with joint axes (I'm only able to
get two graphs side by side).
I suggest you cheat like mad.
1. Create an id number
. gen id = _n
2. Use -expand 2- to duplicate each observation
2. -sort- by id number
3. create two groups
. gen group = mod(id,2)=1
Now you can make your time variable and survival endpoint indicate
survival for group 0 and progression for group 1
A -by- in the graph specification will show the two 'groups' separately
Ronan Conroy
=================================
[email protected]
Royal College of Surgeons in Ireland
Epidemiology Department,
Beaux Lane House, Dublin 2, Ireland
+353 (0)1 402 2431
+353 (0)87 799 97 95
+353 (0)1 402 2764 (Fax - remember them?)
http://rcsi.academia.edu/RonanConroy
P Before printing, think about the environment
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
