| Surv2 {survival} | R Documentation |
Create a survival object from a timeline style data set. This will almost always be the response variable in a formula.
Surv2(time, event)
time |
a timeline variable, such as age, time from enrollment, date, etc. |
event |
the outcome at that time. This can be a 0/1 variable, TRUE/FALSE, or a factor. If the latter, the first level of the factor corresponds to ‘no event was observed at this time’. |
When used in a coxph or survfit model,
Surv2 acts as a trigger to internally convert a timeline style data
set into counting process style data, which is then acted on by the
routine.
An object of class Surv2. There are methods for print,
is.na and subscripting.
coxph,
survfit