Extract an Instrument from an REDCap Export without specifying Variables

This function takes a data frame holding REDCap data, checks if it is a longitudinal study, and returns records that have values.

make_instrument_auto(df, drop_which_when = FALSE, record_id = "record_id")

Arguments

df

A data frame with the instrument

drop_which_when

Drop the record_id and redcap_event_name variables

record_id

Name of record_id variable (if it was changed in REDCap)

Value

A data frame that has an instrument (with at least one not NA value).