define_part_surv: Define Partitioned Survival
In MattWiener/heemodFits: Using Survival Fits with Heemod

Description Usage Arguments Value Examples

Define a partitioned survival model with progression-free survival and overall survival.

define_part_surv(pfs, os, state_names, terminal_state = FALSE,
  cycle_length = 1)

define_part_surv_(pfs, os, state_names, cycle_length = 1)

`pfs, os`	Either results from `flexsurv::flexsurvreg()` or `heemod::define_survival()`.
`state_names`	named character vector, length 3 or 4. State names for progression-free state, progression, (optionally terminal) and death respectively. Elements should be named `"progression_free"`, `"progression"`, (optionally `"terminal"`), and `"death"`. See examples.
`terminal_state`	Should a terminal state be included? Only used when state names are not provided.
`cycle_length`	The value of a Markov cycle in absolute time units.

A part_surv object.

dist_pfs <- heemod::define_survival("exp", rate = 1)
dist_os <- heemod::define_survival("exp", rate = .5)

define_part_surv(
  pfs = dist_pfs,
  os = dist_os,
  state_names = c(
    progression_free = "A",
    progression = "B",
    terminal = "C",
    death = "D"
  )
)
# identical to:
define_part_surv(
  pfs = dist_pfs,
  os = dist_os,
  terminal_state = TRUE
)