clean_duration          Clean implausibly-long prescription durations
close_small_gaps        Close small gaps between successive
                        prescriptions
compute_ndd             Compute numerical daily dose from free-text
                        prescribing instructions
cprd                    Example data from the Clinical Practice
                        Research Datalink (CPRD).
decision_1              Decision 1: impute implausible total quantities
decision_10             Decision 10: close small gaps between
                        successive prescriptions
decision_2              Decision 2: impute missing total quantities
decision_3              Decision 3: impute implausible daily doses
decision_4              Decision 4: impute missing daily doses
decision_5              Decision 5: impute implausible prescription
                        durations
decision_6              Decision 6: choose method of calculating
                        prescription duration
decision_7              Decision 7: impute missing prescription
                        durations
decision_8              Decision 8: disambiguate prescriptions with the
                        same start date
decision_9              Decision 9: handle overlapping prescription
                        periods
drug_prep               Run drug preparation algorithm
example_therapy         Example electronic prescription dataset
get_mode                Get the mode (most common value) of a vector
impute                  Impute missing or implausible values
impute_duration         Replace missing or implausible prescription
                        durations
impute_ndd              Replace implausible or missing numerical daily
                        doses (NDD)
impute_qty              Find implausible entries Replace implausible or
                        missing prescription quantities
isolate_overlaps        Separating overlapping prescription periods
make_decisions          Human-friendly interface to the drug prep
                        algorithm
min_max_dat             Example plausible ranges for prescription
                        quantity and dosage
outside_range           Do values fall outside a specified 'plausible'
                        range?
shift_interval          Shift time intervals until they no longer
                        overlap
