Define analysis observation meta information for ADaM dataset

Usage

define_observation(
  meta,
  name,
  id = "USUBJID",
  group = NULL,
  var = NULL,
  subset = NULL,
  label = NULL,
  ...
)

Arguments

meta: A meta_adam object.
name: A character value of term name. The term name is used as key to link information.
id: A character value of subject identifier variable name in an ADaM dataset.
group: A character vector of group variable names in an ADaM dataset.
var: A character vector of useful variable names in an ADaM dataset.
subset: An expression to identify analysis records. See base::subset().
label: A character value of analysis label.
...: Additional variables.

Value

A metadata object with observation defined.

Examples

plan <- plan(
  analysis = "ae_summary", population = "apat",
  observation = c("wk12", "wk24"), parameter = "any;rel;ser"
)

meta_adam(
  population = r2rtf::r2rtf_adsl,
  observation = r2rtf::r2rtf_adae
) |>
  define_plan(plan = plan) |>
  define_observation(
    name = "wk12",
    group = "TRTA",
    subset = SAFFL == "Y",
    label = "Weeks 0 to 12"
  )
#> ADaM metadata: 
#>    .$data_population 	Population data with 254 subjects 
#>    .$data_observation 	Observation data with 1191 records 
#>    .$plan 	Analysis plan with 2 plans 
#> 
#> 
#>   Analysis observation type:
#>     name        id  group var       subset           label
#> 1 'wk12' 'USUBJID' 'TRTA'     SAFFL == 'Y' 'Weeks 0 to 12'
#> 
#>