[R] multiple testing in survival

[darteta001 at ikasle.ehu.es]

Dear list,

I am willing to perform a cox PH regression analysis on my "time to 
reach a severity score of 5". I have 600 observations and 50 predictor 
variables. So I first want to perform a log-rank test (using the 
survdiff() function) on each individual variable in order to select a 
subset of them for cox analysis. 
My question is: is it possible to control and obtain the False 
discovery rate of the log-rank test for each of the 50 predictor 
variables?

Thanks in advance,

David