events {mstate} | R Documentation |
Given a dataset in long format, for instance generated by
msprep
, and a transition matrix for the multi-state
model, this function counts the number of observed transitions
in the multi-state model and gives their percentages.
events(msdata)
msdata |
An object of class |
Although msdata
does not need to be the result of a call to
msprep
, it does need to be an object of class
"msdata"
, which is essentially a data frame in long format,
with one row for each transition for which the subject is at risk.
The columns from
, to
, and status
need to be
present, with appropriate meaning, see msprep
. The
msdata
argument needs to have a "trans"
attributes,
which holds the transition matrix of the multi-state model.
A list containing two tables, the first, called Frequencies
,
with the number of observed transitions in the multi-state model
occurring in msdata
, the second, called Proportions
,
with the corresponding proportions.
Hein Putter H.Putter@lumc.nl
tmat <- trans.illdeath(names=c("Tx","PR","RelDeath")) data(ebmt3) # data from Section 4 of Putter, Fiocco & Geskus (2007) msebmt <- msprep(time=c(NA,"prtime","rfstime"),status=c(NA,"prstat","rfsstat"), data=ebmt3,trans=tmat) events(msebmt) # see Fig 13 of Putter, Fiocco & Geskus (2007)