Dear R helpers,
I have some difficulties in using 'break' function with loop, and the
followings are my script. What I try to do is (1) permute 'or' first; (2) doing
t-test if this 'or' pass criteria 1 (k=1); (3) end the loop when I get 10
permutations; (4) redo everything again but this time use criteria 2 (k=2) (I
have more criteria 1:n).
Somehow using my script, the final dataset (results1) only contains the result
from criteria 1 (twice!) but not the result from criteria 2. I guess probably I
put the break function under the wrong loop but I cannot fix it. Sorry if the
whole script looks quite messy, I will be very appreciate if someone can help
me fix this problem or probably give me some advices to write it in a smart way.
My attempt:
controlall <- rbeta(10000,1.5,6)
caseall <- rbeta(10000,1.6,6)
results <- NULL
results1 <- NULL
or <-vector("list",length=10)
criteria <- matrix(data=c(1.05,1.15,1.15,1.25),ncol=2,nrow=2)
for (k in 1:2) {
for (i in 1:1000)
{
control <- sample(controlall,100)
case <- sample(caseall,100)
or[i] <-
round(mean(case)*(1-mean(control))/(mean(control)*(1-mean(case))),digit=2)
if (or[i]<criteria[k,2]&or[i]>=criteria[k,1])
{
group <- c(rep(1,100),rep(0,100))
value <- c(case,control)
ttest <- (t.test(case,control,alternative="two.sided",paired=F))$p.value
all <- c(or[i],ttest)
results <- rbind(results,all)
}
ifelse(nrow(results)==5,break,1)
}
results1 <- rbind(results1,results)
}
Thank you so much in advance,
Amber
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