The research study paper from the University of Michigan defines the markers of nontraditional students as predictor variables to test their hypotheses, which are also translated into LARC format.

• age 20 and above: STDNT_BIRTH_YR (students below 20 years old do not count)
• first generation students: PRNT MAX ED LVL DES (non-first generation students do not count)
• international students: STDNT_CTZN_STAT_CD (domestic students do not count)
• lower income students: EST GROSS FAM INC DES (students with income above 75k do not count)
• part-time students: ACAD_LOAD_SHORT_DES (full-time students do not count)
• students from single-parent households: SNGL PRNT IND (students from other households do not count)
• transfer students: ENTRY_TYP_SHORT_DES (freshmen students do not count)
• underrepresented minorities: STDNT UNDREP MNRTY IND (students of majority ethnicities do not count)
• veteran students: ADMSSN_VTRN_IND (non-veterans do not count)
• athlete students: ATHLTC_PRTCPT_SPORT_SHORT_DES (non-athletes do not count)