Name Steward Organization Suggested Domain Suggested Domain Description Cde Group Classification
1i1. Participant used substances including prescription or recreational drugs that caused significant impairment in work, legal, driving, or social areas within the past 12 months NACC Disease characterization
Including Alzheimer's Disease (AD)/AD-Related Dementias (ADRD) diagnosis and multiple chronic conditions (MCCs)
 Other NIA-funded studies
  • ▼ NACC
    • ▼ Uniform Data Set
      • ▼ Form name- A5/D2: Participant Health History/Clinician-assessed Medical Conditions
        • ▼ Packet- Initial Visit Packet
          • Variable name- substyear

# Datatype

UUID: 974ba33a-c06e-5c49-a0aa-15e364877fac

Value List

# Permissible value Value meaning name

UUID: 53c978b2-c176-5c58-874c-4f3324775bfe

0 No

UUID: f858d03b-7570-5665-90f4-bd0824e6f5ad

1 Yes

UUID: 027dfa61-630c-5644-937a-befaa960e1c6

9 Unknown

# Identifier Origin Version

UUID: e8c1bb7c-b5f6-53d1-a230-2b58929ae20b

UDS_a5d2_Initial Visit Packet_substyear NACC-source_dataset+form_name+packet+var_name NACC_uds-v4-ivp-ded-11122025