Landmark dataset constructor.

Usage

morie_survival_landmark(data, duration_col, event_col, landmark_time)

Arguments

data: A data.frame whose columns supply duration_col, event_col, covariate_cols, etc.
duration_col: Character; column name of the event/censoring time in data.
event_col: Character; column name of the event-indicator variable in data.
landmark_time: Numeric landmark time at which to subset the cohort before fitting (lead-time bias correction).

Value

A data.frame of landmark survival estimates.

Examples

set.seed(1)
df <- data.frame(t = rexp(60), e = rbinom(60, 1, 0.7),
                 x1 = rnorm(60), x2 = rnorm(60))
str(morie_survival_landmark(df, "t", "e", landmark_time = 0.5), max.level = 1)
#> 'data.frame':	43 obs. of  4 variables:
#>  $ t : num  0.2552 0.6816 2.395 0.7296 0.0397 ...
#>  $ e : int  0 1 0 1 0 0 1 1 1 0 ...
#>  $ x1: num  0.772 -0.22 -0.276 1.256 0.647 ...
#>  $ x2: num  -0.324 -1.087 -0.448 0.472 -1.18 ...