On Sep 21, 2011, at 12:37 PM, Duke wrote:
> Thanks for your response, Marc. HG and LG are high-grade/low-grade tumors.
> The data has not been collected yet, but will be soon. It's all archived
> data that will be pulled from computer records. The IRB wants some mention
> of power or sample s
Thanks for your response, Marc. HG and LG are high-grade/low-grade tumors.
The data has not been collected yet, but will be soon. It's all archived
data that will be pulled from computer records. The IRB wants some mention
of power or sample size, but doing it for this scenario has been a bit o
On Sep 21, 2011, at 8:54 AM, Duke wrote:
> 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 sub
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 ne
4 matches
Mail list logo
