get_labels function

Get value labels

Get value labels for the ID variables in a hesim_data object and create a list of named vectors that can be passed to formatting and plotting functions. This lets users create nice labels for treatment strategies, subgroups, health states, and/or transitions when presenting results.

get_labels(
  object,
  strategy = "strategy_name",
  grp = "grp_name",
  state = "state_name",
  transition = "transition_name",
  death_label = "Death"
)

Arguments

• object: An object of class hesim_data created with hesim_data().

• strategy: The name of the column in the strategy element of object

  containing labels for strategy_id.

• grp: The name of the column in the patient element of object

  containing labels for grp_id.

• state: The name of the column in the state element of object

  containing labels for state_id.

• transition: The name of the column in the transition element of object

  containing labels for transition_id.

• death_label: The label to use for the death health state. By default a label named "Death" will be concatenated to the labels for the non-death health states. The death state can be omitted from labels for the health states by setting death_label = NULL.

Returns

A list of named vectors containing the values and labels of variables. The elements of each vector are the values of a variable and the names are the labels. The names of the list are the names of the ID variables.

Examples

library("data.table")
strategies <- data.table(
  strategy_id = c(1, 2),
  strategy_name = c("Strategy 1", "Strategy 2")
)
patients <- data.table(
  patient_id = seq(1, 4),
  age = c(50, 55, 60, 65),
  grp_id = c(1, 1, 2, 2),
  grp_name = rep(c("Age 50-59", "Age 60-69"), each = 2)
)
states <- data.table(
  state_id =  seq(1, 2),
  state_name = c("State 1", "State 2")
)
hesim_dat <- hesim_data(
  strategies = strategies,
  patients = patients,
  states = states
)
labs <- get_labels(hesim_dat)
labs

# Pass to set_labels()
d <- data.table(strategy_id = c(1, 1, 2, 2),
                grp_id = c(1, 2, 1, 2))
set_labels(d, labs, new_name = c("strategy_name", "grp_name"))
d

See Also

hesim_data(), set_labels()