Hmisc (version 5.3-0)

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)

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.

See Also

event.history, Date, event.chart

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)