This function allows to create a KM survival curve overall or splitted by a categorical variable

Usage

KM_LB(
  Event = "OS_EVENT",
  tEvent = "OS",
  strata = 1,
  data = data,
  title = "Prova",
  xlab = "Time in months",
  ylab = "Probability of Survival",
  atrisklab = "At risk",
  xlim = c(0, max(data[, tEvent], na.rm = T)),
  lwd_lines = 1,
  alpha_CI = 0,
  size_pval = 4,
  x_pval = 5,
  y_pval = 0.5,
  size_title = 14,
  size_title_x = 12,
  size_title_y = 12,
  size_text_x = 10,
  size_text_y = 10,
  size_legend_title = 5,
  size_legend_text = 12,
  at_risk_title_size = 10.75,
  at_risk_size = 3,
  breaks_by = 3
)

Arguments

Event: Event variable
tEvent: Survival Time Variable
strata: Variable to stratify (Default = 1)
data: dataframe
title: Graph title (Default = "Prova")
xlab: x-axis title (Default = "Time in months")
ylab: y-axis title (Default = "Probaility of Surv")
xlim: limits of x-axis (Default is from 0 to maximum observed time)
lwd_lines: linewidth of survival curves
alpha_CI: transparency of CI of survival curves. To not display CI set it to 0 (default)
size_pval: size of log-rank-test p-value
x_pval: x-axis coordinates of pvalue, same scale of tEvent
y_pval: y-axis coordinates of pvalue, between 0 and 1
size_title: size of title
size_title_x: size of x-axis title
size_title_y: size of y-axis title
size_text_x: size of x-axis text
size_text_y: size of y-axis text
size_legend_title: size of legend title
size_legend_text: size of legend text
at_risk_title_size: size of at risk table title
at_risk_size: size of at risk table text
breaks_by: breaks of risk table (Default = 3)
legendlab: title of at risk table (Default = "At risk")

Value

a KM graph