coxphms.object | R Documentation |

This class of objects is returned by the `coxph`

class of functions
to represent a fitted hazards model, when the model has
multiple states. The object inherits from the `coxph`

class.

`states` |
a character vector listing the states in the model |

`cmap` |
the coefficient map. A matrix containing a column for each transition and a row for each coefficient, the value maps that transition/coefficient pair to a position in the coefficient vector. If a particular covariate is not used by a transition the matrix will contain a zero in that position, if two transitions share a coefficient the matrix will contain repeats. |

`smap` |
the stratum map. The row labeled ‘(Baseline)’ identifies transitions that do or do not share a baseline hazard. Further rows correspond to strata() terms in the model, each of which may apply to some transitions and not others. |

`rmap` |
mapping for the residuals and linear predictors. A two column matrix with one row for each element of the vectors and two columns, the first contains the data row and the second the transition. |

In a multi-state model a set of intermediate observations is created
during the computation, with a separate set of data rows for each
transition. An observation (id and time interval) that is at risk for
more than one transition will for instance have a linear predictor and
residual for each of the potential transitions. As a result the vector
of linear predictors will be longer than the number of observations.
The `rmap`

matrix shows the mapping.

The object has all the components of a `coxph`

object, with the
following additions and variations.

`coxph`

, `coxph.object`

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