Sorry, to add more detail, here are my data
------------------------------------------------------------------------
------
397 total obs.
0 exclusions
------------------------------------------------------------------------
------
397 obs. remaining, representing
58 failures in single record/single failure data
8262.5 total analysis time at risk, at risk from t = 0
earliest observed entry t = 0
last observed exit t = 96
So if I only have 58 failures out of 397 obs, why is my survival
curve look like this:
Attachment:
pastedGraphic.pdf
Description: Adobe PDF document
Thanks!
On Aug 24, 2009, at 4:56 PM, Tina Hernandez-Boussard wrote:
Hi All,
I am having problems viewing the graph I want using stset.
I have a dataset that contains 398 patients with 58 failures
I have the following variables:
followupTime TimetoEvent ID
I have set things up as such (1 row per patient):
stset followupTime , failure(TimetoEvent )
failure _d: TimetoEvent
analysis time _t: followupTime
I have tried to make TimetoEvent a dummy variable, with 0/1 instead
of time of event.
However, when I get the graphs, I have everyone with an event. I
should only have 58 events. Can someone please help on what I have
done wrong with the setup?
Thanks!
Tina
