[R] Split

Medic m@|||P@dpo@t @end|ng |rom gm@||@com
Mon Dec 23 18:14:53 CET 2019


I have
mydata$var
#this is ONE group of patients

And I would like to get
median and ICR of mydata$var.

How can I get this?
With summary (mydata$var)!

Ok!

And now I would like to get THE SAME, but for TWO group: male and
female (which are contained in the group mydata$var)

How can I get this?
First I need to split mydata$var by mydata$sex, and then take:

summary (for male)
and
summary (for female)

That's all I want

Bert,
ave(mydata$var, madata$sex, FUN=median)
gives me:
[1] 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6 5.6
5.6 5.6 5.6 5.6
[21] 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0
6.0 6.0 6.0 6.0
What is it?
It is an endless(???) repetition of the median.
Moreover, there is no ICR.

Jeff,
your constructions are too complicated for me
===
P.S. Such simple thing and so difficult?! (I begin think about the Excel.)



More information about the R-help mailing list