hie R users
l have the following matrix
n=20
m<-matrix(nrow=n,ncol=4)
colnames(m)=c("treatmentgrp","strata","survivalTime")
for(i in 1:n)
m[i,]<-c(sample(c(1,2),1,replace=TRUE),sample(c(1:2),1,replace=TRUE),rexp(1,0.07),rexp(1,0.02))
print(m)
1.l would like to control the size of the treatment variable eg treatment
1=size 5 treatment 2=size 15.
2. l would also want to control the size of the strata ie in treatment 1
divide the strata in to 2 etc.
3. For the survival time l would like to have treatment 1-strata 1 using a
different rate from treatment 2 -strata 2 etc to generate the survival time.
the program l used above does nt do this so if you can help
thanks
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