events | 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)
```

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