This function is used to identify the original ADNI study phase of subject (i.e. when subject enrolled in ADNI study as new-enrollee) based on their RID.
Value
A character vector with the same size as RID with original study protocol (i.e. ADNI study phases).
See also
Other ADNI study protocol/phase:
adni_phase(),
adni_phase_order_num(),
adni_pttype(),
adni_study_track(),
convert_adni_phase_order_num(),
create_col_protocol(),
create_orig_protocol()
Examples
if (FALSE) { # \dontrun{
RID <- c(0001, 1250, 7015, 10002)
origprot <- original_study_protocol(RID = RID)
origprot
} # }
