Name Steward Organization Suggested Domain Suggested Domain Description Cde Group Classification
4h. Head injury (e.g. in a vehicle accident, being hit by an object, in a fall, while playing sports or biking, in an assault, or during military service) that resulted in a period of feeling "dazed or confused," being unable to recall details of the injury, or loss of consciousness (if multiple head injuries, consider most severe episode). 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- headinjury

# Datatype
Value List

# Permissible value Value meaning name
0 No
1 Yes
9 Unknown

# Identifier Origin Version
UDS_a5d2_Initial Visit Packet_headinjury NACC-source_dataset+form_name+packet+var_name NACC_uds-v4-ivp-ded-11122025