Define Kaplan-Meier Distribution

Define a survival distribution based on a table of Kaplan-Meier output containing times and survival probabilities.

Usage

define_surv_km(x, time_col = "time", surv_col = "survival")

define_surv_table(x, time_col = "time", surv_col = "survival")

Arguments

x

a data frame with columns for time and survival probability. By default, these columns are assumed to be named time and survival, but these can be configured by via the optional parameters.

time_col

the name of the time column (defaults to time)

surv_col

the name of the time column (defaults to survival)

Value

a surv_km object.

Examples

df <- data.frame(
     time = c(0, 1, 5, 10),
     survival = c(1, 0.9, 0.7, 0.5)
)
define_surv_km(df)
#> A Kaplan-Meier distribution:
#>    time survival
#>   <dbl>    <dbl>
#> 1     0      1  
#> 2     1      0.9
#> 3     5      0.7
#> 4    10      0.5