R Dataset / Package rpart / stagec
Stage C Prostate Cancer
A set of 146 patients with stage C prostate cancer, from a study exploring the prognostic value of flow cytometry.
A data frame with 146 observations on the following 8 variables.
Time to progression or last follow-up (years)
1 = progression observed, 0 = censored
age in years
early endocrine therapy, 1 = no, 2 = yes
percent of cells in G2 phase, as found by flow cytometry
grade of the tumor, Farrow system
grade of the tumor, Gleason system
the ploidy status of the tumor, from flow cytometry. Values are diploid, tetraploid, and aneuploid
A tumor is called diploid (normal complement of dividing cells) if the fraction of cells in G2 phase was determined to be 13% or less. Aneuploid cells have a measurable fraction with a chromosome count that is neither 24 nor 48, for these the G2 percent is difficult or impossible to measure.
require(survival) rpart(Surv(pgtime, pgstat) ~ ., stagec)
Dataset imported from https://www.r-project.org.
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