eha: plot.phreg – R documentation

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eha

plot.phreg

Plots output from a phreg regression

Description

Plot(s) of the hazard, density, cumulative hazards, and/or the survivor function(s) for each stratum.

Usage

## S3 method for class 'phreg'
plot(
  x,
  fn = c("haz", "cum", "den", "sur"),
  main = NULL,
  xlim = NULL,
  ylim = NULL,
  xlab = "Duration",
  ylab = "",
  col,
  lty,
  printLegend = TRUE,
  score = 1,
  fig = TRUE,
  ...
)

Arguments

`x`	A `phreg` object
`fn`	Which function should be plotted? Default is the hazard function(s).
`main`	Header for the plot
`xlim`	x limits
`ylim`	y limits
`xlab`	x label
`ylab`	y label
`col`	Color(s) for the curves. Defaults to black.
`lty`	Line type for the curve(s). Defaults to 1:(No. of strata).
`printLegend`	Logical, or character ("topleft", "bottomleft", "topright" or "bottomright"); if `TRUE` or character, a legend is added to the plot if the number of strata is two or more.
`score`	Multiplication factor for the hazard function.
`fig`	logical, should the graph be drawn? If FALSE, data is returned.
`...`	Extra parameters passed to 'plot' and 'lines'.

Value

No return value if fig = TRUE, otherwise the cumulative hazards function (coordinates), given fn = "cum".

Note

Reference hazard is given by the fit; zero for all covariates, and the reference category for factors.

Author(s)

Göran Broström

Examples

y <- rllogis(40, shape = 1, scale = 1)
x <- rep(c(1,1,2,2), 10)
fit <- phreg(Surv(y, rep(1, 40)) ~ x, dist = "loglogistic")
plot(fit)

eha

Event History Analysis

v2.10.0

GPL (>= 2)

Authors

Göran Broström [aut, cre], Jianming Jin [ctb]

Initial release

2022-04-17