status_at: Return patients status at given time

In lbraglia/lbsurv: Survival Analysis Utility Functions

Return patients status at given time

Description

Return patients status at given time. Implemented for right-censored dataset.

Usage

status_at(
  start_date = NULL,
  prog_date = NULL,
  death_date = NULL,
  status_time = NULL
)

Arguments

start_date	time variable
prog_date	status variable
death_date	death variable
status_time	censoring time

Value

a factor vector

Examples

db <- data.frame(start_date  = as.Date(c("1900-01-01", "1900-01-01", "1900-01-01", "1900-01-01",           NA)),
                 prog_date   = as.Date(c("1900-03-01", "1900-03-01",           NA,           NA,           NA)),
                 death_date  = as.Date(c("1900-06-01",           NA, "1900-06-01",           NA,           NA)))
with(db, status_at(start_date, prog_date, death_date, status_time = 10))
with(db, status_at(start_date, prog_date, death_date, status_time = 100))
with(db, status_at(start_date, prog_date, death_date, status_time = 200))

lbraglia/lbsurv documentation built on Feb. 11, 2025, 3:16 a.m.