NCCTG Lung Cancer Data
NCCTG Lung Cancer Data from survival in patients with advanced lung cancer is from the North Central Cancer Treatment Group. The data is a collection of few metadata, such as which institution collected it, age of the patient, sex, and so on. The performance scores in this dataset rates how well the patient can perform the daily activities. The most important variable in any survival analysis dataset is the knowledge about the time-to-event, for example, time until death.
Survival analysis is usually defined as a set of methods for examining data where the outcome variable is the time till the incidence of an event of interest.
In the next exercise, we will learn how to create the survival object using the method Surv from the survival package. Note that in the summary of the dataset after adding the survival object, two additional variables SurvObject.time and SurvObject.status are created...