addCumulativeDose       To add a new column with the cumulative dose.
                        To add multiple columns use
                        'addDrugUtilisation()' for efficiency.
addCumulativeQuantity   To add a new column with the cumulative
                        quantity. To add multiple columns use
                        'addDrugUtilisation()' for efficiency.
addDailyDose            Add daily dose to 'drug_exposure' like table
addDaysExposed          To add a new column with the days exposed. To
                        add multiple columns use 'addDrugUtilisation()'
                        for efficiency.
addDaysPrescribed       To add a new column with the days prescribed.
                        To add multiple columns use
                        'addDrugUtilisation()' for efficiency.
addDrugRestart          Add drug restart information as a column per
                        follow-up period of interest.
addDrugUtilisation      Add new columns with drug use related
                        information
addIndication           Add a variable indicating individuals
                        indications
addInitialDailyDose     To add a new column with the initial daily
                        dose. To add multiple columns use
                        'addDrugUtilisation()' for efficiency.
addInitialExposureDuration
                        To add a new column with the duration of the
                        first exposure. To add multiple columns use
                        'addDrugUtilisation()' for efficiency.
addInitialQuantity      To add a new column with the initial quantity.
                        To add multiple columns use
                        'addDrugUtilisation()' for efficiency.
addNumberEras           To add a new column with the number of eras. To
                        add multiple columns use 'addDrugUtilisation()'
                        for efficiency.
addNumberExposures      To add a new column with the number of
                        exposures. To add multiple columns use
                        'addDrugUtilisation()' for efficiency.
addTimeToExposure       To add a new column with the time to exposure.
                        To add multiple columns use
                        'addDrugUtilisation()' for efficiency.
addTreatment            Add a variable indicating individuals
                        medications
benchmarkDrugUtilisation
                        Run benchmark of drug utilisation cohort
                        generation
cohortGapEra            Get the gapEra used to create a cohort
erafyCohort             Erafy a cohort_table collapsing records
                        separated gapEra days or less.
generateAtcCohortSet    Generate a set of drug cohorts based on ATC
                        classification
generateDrugUtilisationCohortSet
                        Generate a set of drug cohorts based on given
                        concepts
generateIngredientCohortSet
                        Generate a set of drug cohorts based on drug
                        ingredients
mockDrugUtilisation     It creates a mock database for testing
                        DrugUtilisation package
patternTable            Function to create a tibble with the patterns
                        from current drug strength table
patternsWithFormula     Patterns valid to compute daily dose with the
                        associated formula.
plotDiscontinuationAsSurvival
                        Plot discontinuation
plotDrugRestart         Generate a custom ggplot2 from a
                        summarised_result object generated with
                        summariseDrugRestart() function.
plotDrugUtilisation     Plot the results of 'summariseDrugUtilisation'
plotIndication          Generate a plot visualisation (ggplot2) from
                        the output of summariseIndication
plotProportionOfPatientsCovered
                        Plot proportion of patients covered
plotTreatment           Generate a custom ggplot2 from a
                        summarised_result object generated with
                        summariseTreatment function.
requireDrugInDateRange
                        Restrict cohort to only cohort records within a
                        certain date range
requireIsFirstDrugEntry
                        Restrict cohort to only the first cohort record
                        per subject
requireObservationBeforeDrug
                        Restrict cohort to only cohort records with the
                        given amount of prior observation time in the
                        database
requirePriorDrugWashout
                        Restrict cohort to only cohort records with a
                        given amount of time since the last cohort
                        record ended
summariseDiscontinuationAsSurvival
                        Summarise discontinuation as a survival
                        analysis
summariseDoseCoverage   Check coverage of daily dose computation in a
                        sample of the cdm for selected concept sets and
                        ingredient
summariseDrugRestart    Summarise the drug restart for each follow-up
                        period of interest.
summariseDrugUtilisation
                        This function is used to summarise the dose
                        utilisation table over multiple cohorts.
summariseIndication     Summarise the indications of individuals in a
                        drug cohort
summariseProportionOfPatientsCovered
                        Summarise proportion Of patients covered
summariseTreatment      This function is used to summarise treatments
                        received
tableDiscontinuationAsSurvival
                        Create a table with discontinuation as survival
                        results
tableDoseCoverage       Format a dose_coverage object into a visual
                        table.
tableDrugRestart        Format a drug_restart object into a visual
                        table.
tableDrugUtilisation    Format a drug_utilisation object into a visual
                        table.
tableIndication         Create a table showing indication results
tableProportionOfPatientsCovered
                        Create a table with proportion of patients
                        covered results
tableTreatment          Format a summarised_treatment result into a
                        visual table.
