hello everybody,
i want to conduct life table analysis for a patency rate (how long a stent of a patient remains patent). The end point is obstruction (instead of death at sulvival). So i have the patency(days) the "failure"(obstruction), while the lost to follow up patients are these which die in a specific interval.
for example if i want to produce a life table for the first 30 days:
"patency" "obstruction" "survival" "lost to follow up"
28 1 (yes) 32 0
15 0 (no) 15 1
17 0 33 0--and not 1 because even his patency is 17 days he is still alive.
How can i produce a life table where the "lost to follow up" are defined not
of timevar=patency, but of survival<=patency?
THANKS A LOT!
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