Displaying 2 results from an estimated 2 matches for "ltfu".
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lffu
2011 Sep 21
1
Power calculation for survival analysis
useR's,
I am trying to do a power calculation for a survival analysis using a
logrank test and I need some help properly doing this in R. Here is the
information that I know:
- I have 2 groups, namely HG and LG
- Retrospective analysis with subjects gathered from archival data over 20
years. No new recruitment of subjects and no estimated time to target
accrual and accrual rate.
- Survival
2012 Feb 28
1
Packages/functions for competing risk analysis
...several competing risks.
0 = Active by end of study
1 = Stopped treatment to start another treatment
2 = Lost
3 = Dead
My event of interest in Lost to Followup but starting a different treatment
and dying are competing risks. All 1,2,3 events are events of exiting the
study, but it's only 2-LTFU that we are concerned with (I know I am
repeating myself, sorry).
I can't seem to find a package or function that can handle 2 competing
risks for the main event. I realize I may be using the well-known ones,
timereg and cmprisk, wrong. And if I am, then I'd appreciate a correction.
He...