kmplotmlx: Kaplan Meier plot

In mlxR: Simulation of Longitudinal Data

Description

Plot empirical survival functions using the Kaplan Meier estimate.

Usage

kmplotmlx(
  r,
  index = 1,
  level = NULL,
  time = NULL,
  cens = TRUE,
  plot = TRUE,
  color = "#e05969",
  group = NULL,
  facet = TRUE,
  labels = NULL
)

Arguments

r	a data frame with a column id, a column time, a column with values and possibly a column group.
index	an integer: index=k means that the survival function for the k-th event is displayed. Default is index=1.
level	a number between 0 and 1: confidence interval level.
time	a vector of time points where the survival function is evaluated.
cens	if TRUE right censoring times are diplayed.
plot	if TRUE the estimated survival function is displayed, if FALSE the values are returned
color	color to be used for the plots (default="#e05969")
group	variable to be used for defining groups (by default, group is used when it exists)
facet	makes subplots for different groups if TRUE
labels	vector of strings

Details

See http://simulx.webpopix.org/mlxr/kmplotmlx/ for more details.

Value

a ggplot object if plot=TRUE ; otherwise, a list with fields:

• surv a data frame with columns T (time), S (survival), possibly (S1, S2) (confidence interval) and possibly group

• cens a data frame with columns T0 (time), S0 (survival) and possibly group

Examples

## Not run: 
tteModel1 <- inlineModel("
  [LONGITUDINAL]
  input = {beta,lambda}  
  EQUATION:
  h=(beta/lambda)*(t/lambda)^(beta-1)
  DEFINITION:
  e = {type=event, maxEventNumber=1, rightCensoringTime=70, hazard=h}
  ")

  p1   <- c(beta=2.5,lambda=50)
  e    <- list(name='e', time=0)
  res1 <- simulx(model=tteModel1, parameter=p1, output=e, group=list(size=100))
  pl1  <- kmplotmlx(res1$e,level=0.95)
  print(pl1)

  p2   <- c(beta=2,lambda=45)
  g1   <- list(size=50, parameter=p1)
  g2   <- list(size=100, parameter=p2)
  res2 <- simulx(model=tteModel1, output=e, group=list(g1,g2))
  pl2  <- kmplotmlx(res2$e)
  print(pl2)

## End(Not run)

mlxR documentation built on Jan. 19, 2021, 5:06 p.m.