Create a dthcaus_source Object

The derive_var_dthcaus() function and dthcaus_source() have been superseded in favor of derive_vars_extreme_event().

Usage

dthcaus_source(
  dataset_name,
  filter,
  date,
  order = NULL,
  mode = "first",
  dthcaus,
  set_values_to = NULL
)

Arguments

dataset_name

The name of the dataset, i.e. a string, used to search for the death cause.

filter

An expression used for filtering dataset.

date

A date or datetime variable or an expression to be used for sorting dataset.

order

Sort order

Additional variables/expressions to be used for sorting the dataset. The dataset is ordered by date and order. Can be used to avoid duplicate record warning.

Permitted Values: list of expressions created by exprs(), e.g., exprs(ADT, desc(AVAL)) or NULL

mode

One of "first" or "last". Either the "first" or "last" observation is preserved from the dataset which is ordered by date.

dthcaus

A variable name, an expression, or a string literal

If a variable name is specified, e.g., AEDECOD, it is the variable in the source dataset to be used to assign values to DTHCAUS; if an expression, e.g., str_to_upper(AEDECOD), it is evaluated in the source dataset and the results is assigned to DTHCAUS; if a string literal, e.g. "Adverse Event", it is the fixed value to be assigned to DTHCAUS.

set_values_to

Variables to be set to trace the source dataset

Value

An object of class "dthcaus_source".

See also

derive_var_dthcaus()

Other superseded: date_source(), derive_param_extreme_record(), derive_var_dthcaus(), derive_var_extreme_dt(), derive_var_extreme_dtm(), get_summary_records()

Examples

# Deaths sourced from AE
src_ae <- dthcaus_source(
  dataset_name = "ae",
  filter = AEOUT == "FATAL",
  date = AEDTHDT,
  mode = "first",
  dthcaus = AEDECOD
)

# Deaths sourced from DS
src_ds <- dthcaus_source(
  dataset_name = "ds",
  filter = DSDECOD == "DEATH",
  date = convert_dtc_to_dt(DSSTDTC),
  mode = "first",
  dthcaus = DSTERM
)