GSE2034 {nutshell}R Documentation

Breast cancer relapse free survival

Description

This data set represents 180 lymph-node negative relapse free patients and 106 lymph-node negate patients that developed a distant metastasis. It contains information on the time until relapse of last follow up for each patient, an indicator of whether the ER gene was expressed, and an indicator whether a relapse occurred.

This data set is used as an example in the book "R in a Nutshell" from O'Reilly Media.

Usage

data(GSE2034)

Format

A data frame with 286 observations on the following 7 variables.

PID
a numeric vector
GEO.asscession.number
The unique identifier for each subject on GEO
lymph.node.status
a factor with levels negative
months.to.relapse.or.last.followup
a numeric vector
relapse
a logical vector
ER.Status
a factor with levels ER- and ER+
Brain.relapses
a logical vector

Source

http://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE2034

Examples

data(GSE2034)
library(survival)
GSE2034.Surv <- transform(GSE2034,
  surv=Surv(
    time=GSE2034$months.to.relapse.or.last.followup,
    event=GSE2034$relapse,
    type="right"
    )
  )
GSE2034.survfit <- survfit(
  formula=surv~ER.Status,
  data=GSE2034.Surv )
plot(GSE2034.survfit,lty=1:2)
legend(135,1,c("ER+","ER-"),lty=1:2,cex=0.5)

[Package nutshell version 1.0 Index]