Hmisc: event.convert – R documentation

Become an expert in R — Interactive courses, Cheat Sheets, certificates and more!

event.convert

Event Conversion for Time-to-Event Data

Description

Convert a two-column data matrix with event time and event code into multiple column event time with one event in each column

Usage

event.convert(data2, event.time = 1, event.code = 2)

Arguments

`data2`	a matrix or dataframe with at least 2 columns; by default, the first column contains the event time and the second column contains the k event codes (e.g. 1=dead, 0=censord)
`event.time`	the column number in data contains the event time
`event.code`	the column number in data contains the event code

Details

In the survival analysis, the data typically come in two columns: one column containing survival time and the other containing censoring indicator or event code. The event.convert function converts this type of data into multiple columns of event times, one column of each event type, suitable for the event.chart function.

Author(s)

J. Jack Lee and Kenneth R. Hess
Department of Biostatistics
University of Texas
M.D. Anderson Cancer Center
Houston, TX 77030
jjlee@mdanderson.org, khess@mdanderson.org

Joel A. Dubin
Department of Statistics
University of Waterloo
jdubin@uwaterloo.ca

Examples

# To convert coded time-to-event data, then, draw an event chart:
surv.time <- c(5,6,3,1,2)
cens.ind   <- c(1,0,1,1,0)
surv.data  <- cbind(surv.time,cens.ind)
event.data <- event.convert(surv.data)
event.chart(cbind(rep(0,5),event.data),x.julian=TRUE,x.reference=1)

Hmisc

Harrell Miscellaneous

v4.5-0

GPL (>= 2)

Authors

Frank E Harrell Jr <fh@fharrell.com>, with contributions from Charles Dupont and many others.

Initial release

2021-02-27