Using the Surv() function for GBSG2
In the video, we learned about the Surv()
function, which generates a Surv
object.
Let's look a little deeper into what a Surv
object actually is. We will use the GBSG2
data again.
The survival
package and GBSG2
data are loaded for you in this exercise.
This exercise is part of the course
Survival Analysis in R
Exercise instructions
- Create a
Surv
object with the two variables describing the duration and censoring information of theGBSG2
dataset. - Look at the first 10 elements of the object (using indexing with squared brackets
[]
). - Look at the summary (
summary()
) and structure (str()
) of the object.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# Create Surv-Object
sobj <- Surv(___, ___)
# Look at 10 first elements
___[___:___]
# Look at summary
___(sobj)
# Look at structure
___(___)