Plot KM curves for two groups with optional confidence intervals and censoring marks

Plots Kaplan-Meier survival curves for two groups, with options for confidence intervals and censoring marks.

Usage

plot_km_curves_counting(
  at_points,
  S0.KM,
  idx0,
  idv0,
  S1.KM,
  idx1,
  idv1,
  col.0,
  col.1,
  ltys,
  lwds,
  Xlab,
  Ylab,
  ylim,
  xlim,
  show.ticks = FALSE,
  cens0 = NULL,
  risk.points,
  risk.points.label,
  cens1 = NULL,
  se0.KM = NULL,
  se1.KM = NULL,
  conf.int = FALSE,
  conf_level = 0.95,
  censor.cex = 1,
  time.zero = 0,
  tpoints.add = c(0),
  ...
)

Arguments

at_points: Numeric vector of time points for plotting.
S0.KM: Numeric vector of survival probabilities for group 0.
idx0: Indices for censoring in group 0.
idv0: Indices for events in group 0.
S1.KM: Numeric vector of survival probabilities for group 1.
idx1: Indices for censoring in group 1.
idv1: Indices for events in group 1.
col.0: Color for group 0.
col.1: Color for group 1.
ltys: Line types for groups.
lwds: Line widths for groups.
Xlab: X-axis label.
Ylab: Y-axis label.
ylim: Y-axis limits.
xlim: X-axis limits.
show.ticks: Logical; show censoring marks (default FALSE).
cens0: Numeric vector of censoring times for group 0.
risk.points: Numeric vector of risk time points.
risk.points.label: Character vector of labels for risk time points.
cens1: Numeric vector of censoring times for group 1.
se0.KM: Numeric vector of standard errors for group 0.
se1.KM: Numeric vector of standard errors for group 1.
conf.int: Logical; show confidence intervals (default FALSE).
conf_level: Confidence level (default 0.95).
censor.cex: Numeric; censoring mark size (default 1.0).
time.zero: Numeric; time zero value for risk table alignment (default 0).
tpoints.add: Numeric vector; additional time points to include (default c(0)).
...: Additional arguments to plot.

Value

Invisibly returns NULL. Used for plotting side effects.