R: Breslow estimator object

breslow object {penalized} | R Documentation

## Breslow estimator object

### Description

Stores one or more survival stepfunctions of the Kaplan-Meier and Breslow type.

### Details

Breslow objects are generally created by the `penalized` function and related functions.

### Slots

`time`:

  Object of class "vector". The time points at which the function starts, jumps or ends.

`curves`:

  Object of class "matrix". The values of the curve at each time point. Note that the function is left-continuous. Curves are stored as a matrix of dimension (\# curves) x (\# timepoints).

### Methods

"["

  (breslow): Coerces the object to a matrix (as as.matrix) and selects rows and/or columns.

"[["

  (breslow): Selects a subset of the curves.

as.data.frame

  (breslow): Returns the "curves" slot together with the "time" slot in a `data.frame`.

as.list

  (breslow): Coerces the object to a list.

as.matrix

  (breslow): Returns the "curves" slot with the "time" slot as column names.

plot

  (breslow): Straightforward plotting (all curves in one plot).

show

  (breslow): Summarizes the dimensions of the object.

survival

  (breslow): Takes a second argument (`time`). Extracts the value of the survival curve(s) at any time point.

### Author(s)

Jelle Goeman: j.j.goeman@lumc.nl

### See Also

`penalized`.

[Package penalized version 0.9-50 Index]