Computing the survival curve from a Cox model
In this exercise, we will reproduce the example from the video following the steps:
- Compute Cox model
- Decide on "imaginary patients"
- Compute survival curves
- Create
data.framewith survival curve information - Plot
We will focus now on the first three steps in this exercise and do the next two steps in the upcoming exercise.
The survival and survminer packages and the GBSG2 data are loaded for you in this exercise.
Questo esercizio fa parte del corso
Survival Analysis in R
esercizio interattivo pratico
Prova questo esercizio completando questo codice di esempio.
# Cox model
cxmod <- ___(Surv(time, cens) ~ horTh + tsize, data = GBSG2)
# Imaginary patients
newdat <- expand.grid(
horTh = levels(GBSG2$___),
tsize = quantile(GBSG2$___, probs = c(0.25, 0.5, 0.75)))
___(newdat) <- letters[1:6]
# Inspect newdat
newdat