Replace Values for Single Variable Across Multiple Phase

This function is used to replace values for a single column in the dataset across different ADNI study phases.

Usage

replace_values_single_var(.data, fld_name, phaseVar = "PHASE", input_values)

Arguments

.data

Data frame

fld_name

Variable name

phaseVar

Variable name for the ADNI study protocol, Default: "PHASE"

input_values

A list value associated with each ADNI study phase and the format will be [phase_name]$values.

• code: Value that will be replaced, see more collect_value_mapping_single_var()

• decode: Values that will replace the coded values, code

Value

A data frame with replaced values.

See also

Other functions to replace values: convert_to_missing_value(), replace_values_dataset(), replace_values_phase_specific()

Examples

if (FALSE) { # \dontrun{
data_dict_dd <- get_factor_levels_datadict(
  data_dict = ADNIMERGE2::DATADIC,
  tbl_name = NULL,
  nested_value = TRUE
)
input_values <- collect_value_mapping(
  data_dict = data_dict_dd,
  tbl_name = "REGISTRY",
  all_fld_name = "VISTYPE"
)
input_values <- input_values$VISTYPE
result_dataset <- replace_values_single_var(
  .data = ADNIMERGE2::REGISTRY,
  phaseVar = "COLPROT",
  fld_name = "VISTYPE",
  input_values = input_values
)
} # }