Computing a Weibull model and the survival curves
In this exercise we will reproduce the example from the video using the following steps:
- Compute Weibull model
- Decide on "imaginary patients"
- Compute survival curves
- Create
data.frame
with survival curve information - Plot
In this exercise, we will focus on the first three steps. The next exercise will cover the remaining steps.
The survival
, survminer
, and reshape2
packages and the GBSG2
data are loaded for you in this exercise.
This exercise is part of the course
Survival Analysis in R
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# Weibull model
wbmod <- survreg(___ ~ ___ + ___, data = GBSG2)
# Imaginary patients
newdat <- expand.grid(
horTh = levels(GBSG2$___),
tsize = quantile(GBSG2$___, probs = c(___, ___, ___)))
newdat