Function reference • sdtm.oak

SDTM Mapping Algorithms/functions

Set of functions to perform SDTM Mappings

assign_no_ct() assign_ct(): Derive an SDTM variable

hardcode_no_ct() hardcode_ct(): Derive an SDTM variable with a hardcoded value

derive_blfl(): Derive Baseline Flag or Last Observation Before Exposure Flag

derive_seq(): Derive the sequence number (--SEQ) variable

derive_study_day(): derive_study_day performs study day calculation

assign_datetime(): Derive an ISO8601 date-time variable

generate_oak_id_vars(): A function to generate oak_id_vars

oak_id_vars(): Raw dataset keys

sbj_vars(): Subject-level key variables

Conditioned data frames

Functions for conditioned data frames (cnd_df)

condition_add(): Add filtering tags to a data set

ctl_new_rowid_pillar(<cnd_df>): Conditioned tibble pillar print method

tbl_sum(<cnd_df>): Conditioned tibble header print method

mutate(<cnd_df>): Mutate method for conditioned data frames

SDTM examples

SDTM domain file examples

domain_example(): Find the path to an example SDTM domain file

read_domain_example(): Read an example SDTM domain

Controlled terminology

read_ct_spec(): Read in a controlled terminology

read_ct_spec_example(): Read an example controlled terminology specification

ct_spec_example(): Find the path to an example controlled terminology file

ct_map(): Recode according to controlled terminology

Date and time conversion

create_iso8601(): Convert date or time collected values to ISO 8601

fmt_cmp(): Regexps for date/time format components

dtc_formats: Date/time collection formats

problems(): Retrieve date/time parsing problems

Calculation of reference dates in DM

oak_cal_ref_dates(): Calculate Reference dates in ISO8601 character format.

cal_min_max_date(): Calculate minimum and maximum date and time in the data frame

Explicit dot pipe operator

A simple alternative to %>% {...}

`%.>%`: Explicit Dot Pipe

Supplemental Qualifiers

generate_sdtm_supp(): Function to generate final SDTM domain and supplemental domain SUPP--