admiralvaccine (version 0.6.0)

derive_vars_max_flag: Creating ANLxxFL Variables To Flag The Maximum Records

Description

Adds Flags variables for maximum record per subject per event for overall and per vaccination

Usage

derive_vars_max_flag(dataset, flag1 = "ANL01FL", flag2 = "ANL02FL")

Value

The output dataframe with ANLxxFL flags

Arguments

dataset

Input dataset

flag1

Flags the maximum record per subject per event per vaccination. Permitted value: Any variable name as a string or NULL.

NULL denotes not to create the flag

flag2

Flags the maximum record per subject per event for Overall

Permitted value: Any variable name as a string or NULL.

NULL denotes not to create the flag

Author

Dhivya Kanagaraj

Details

This utility flags the maximum record per subject per event per vaccination/Overall If both parameters flag1 & flag2 are passed as NULL then utility will throw error and flags will not be created.

See Also

Other der_var: derive_var_aval_adis(), derive_vars_crit(), derive_vars_event_flag(), derive_vars_merged_vaccine(), derive_vars_params(), derive_vars_vaxdt()

Examples

library(dplyr)
library(admiraldev)
library(admiral)
library(tibble)

input <- tribble(
  ~USUBJID, ~FAOBJ, ~FATESTCD, ~FATPTREF, ~AVAL, ~FATPT, ~PARAMCD,
  "ABC101", "REDNESS", "DIAMETER", "VACC 1", 10, "DAY 1", "DIARE",
  "ABC101", "REDNESS", "DIAMETER", "VACC 1", 7, "DAY 2", "DIARE",
  "ABC101", "REDNESS", "DIAMETER", "VACC 2", 3, "DAY 1", "DIARE",
  "ABC101", "REDNESS", "DIAMETER", "VACC 2", 8, "DAY 2", "DIARE",
  "ABC101", "FATIQUE", "SEV", "VACC 1", 1, "DAY 1", "SEVFAT",
  "ABC101", "FATIQUE", "SEV", "VACC 1", 1, "DAY 2", "SEVFAT",
  "ABC101", "FATIQUE", "SEV", "VACC 2", 2, "DAY 1", "SEVFAT",
  "ABC101", "FATIQUE", "SEV", "VACC 2", 3, "DAY 2", "SEVFAT"
)

derive_vars_max_flag(
  dataset = input,
  flag1 = "ANL01FL",
  flag2 = "ANL02FL"
)
derive_vars_max_flag(
  dataset = input,
  flag1 = NULL,
  flag2 = "ANL02FL"
)
derive_vars_max_flag(
  dataset = input,
  flag1 = "ANL01FL",
  flag2 = NULL
)