Function to generate a sequence variable for e.g. a crossover trial design

Function to generate a sequence variable for e.g. a crossover trial design

Usage

get_treatment_sequence(data, dictionary, variable = "treatment", groups = NULL)

Arguments

data

dataset in pre-parse format, preferrably created using create_nca_data(). Can also be a NONMEM-style dataset with EVID=0|1 column indicating PK an dosing data.

dictionary

abridged data dictionary for the input dataset, specified as list object. Requires at least entries for subject_id, time, conc, dose. Optional entries are: visit. If required entries are specified only partially, then default values (i.e. CDISC) nomenclature will be imputed for missing identifiers.

variable

variable name to base the sequence detection on

groups

optional grouping variable, e.g. ACTARM.

Value

a data frame with the subject_id, sequence number, and full sequence description.