msm (version 0.4.1)

statetable.msm: Table of transitions

Description

Calculates a frequency table counting the number of times each pair of states were observed in successive observation times.

Usage

statetable.msm(state, subject, data=NULL)

Arguments

state

Observed states, assumed to be ordered by time within each subject.

subject

Subject identification numbers corresponding to state. If not given, all observations are assumed to be on the same subject.

data

An optional data frame in which the variables represented by subject and state can be found.

Value

• A frequency table with starting states as rows and finishing states as columns.

Details

If the data are in "from state, to state, time lag" format, then this table can simply be produced by tabulating "from state" against "to state":

table(fromstate, tostate)

See Also

crudeinits.msm

Examples

## Heart transplant data
data(heart)

## 148 deaths from state 1, 48 from state 2 and 55 from state 3.
statetable.msm(state, PTNUM, data=heart)