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These pre-defined dose frequencies are sourced from CDISC. The number of rows to generate using create_single_dose_dataset() arguments start_date and end_date is derived from DOSE_COUNT, DOSE_WINDOW, and CONVERSION_FACTOR with appropriate functions from lubridate.

## Usage

dose_freq_lookup

## Format

An object of class tbl_df (inherits from tbl, data.frame) with 86 rows and 5 columns.

## Details

NCI_CODE and CDISC_VALUE are included from the CDISC source for traceability.

DOSE_COUNT represents the number of doses received in one single unit of DOSE_WINDOW. For example, for CDISC_VALUE=="10 DAYS PER MONTH", DOSE_WINDOW=="MONTH" and DOSE_COUNT==10. Similarly, for CDISC_VALUE=="EVERY 2 WEEKS", DOSE_WINDOW=="WEEK" and DOSE_COUNT==0.5 (to yield one dose every two weeks).

CONVERSION_FACTOR is used to convert DOSE_WINDOW units "WEEK", "MONTH", and "YEAR" to the unit "DAY".

For example, for CDISC_VALUE=="10 DAYS PER MONTH", CONVERSION_FACTOR is 0.0329. One day of a month is assumed to be 1 / 30.4375 of a month (one day is assumed to be 1/365.25 of a year). Given only start_date and end_date in the aggregate dataset, CONVERSION_FACTOR is used to calculate specific dates forstart_date and end_date in the resulting single dose dataset for the doses that occur. In such cases, doses are assumed to occur at evenly spaced increments over the interval.

To see the entire table in the console, run print(dose_freq_lookup).

## See also

create_single_dose_dataset()

Other metadata: atoxgr_criteria_ctcv4, atoxgr_criteria_ctcv5