Name Steward Organization Suggested Domain Suggested Domain Description Cde Group Classification
Age of Symptom Onset GRDR Disease characterization
Including Alzheimer's Disease (AD)/AD-Related Dementias (ADRD) diagnosis and multiple chronic conditions (MCCs)
NIH CDEs
  • GRDR
    • Requirement
      • Required
    • Category
      • Diagnosis

# Definition Datatype
Prenatal At birth Less than 1 year Age 1 - 89 years 90+ years Participant never experienced any symptoms Age of onset unknown Value List

# Permissible value Value meaning name
90+ years 90+ years
Age 1 - 89 years Age 1 - 89 years
Age of onset Age of onset
At birth At birth
Less than 1 year Less than 1 year
Participant never experienced any symptoms Participant never experienced any symptoms
Prenata Prenata
Unknown Unknown

# Definition Tags
Prenatal At birth Less than 1 year Age 1 - 89 years 90+ years Participant never experienced any symptoms Age of onset unknown Health

# Designation Tags
What was the participant's age in years when they first began experiencing symptoms of the rare disease? Health
Age of Symptom Onset Question

# Identifier Origin Version
GRDR028 GRDR N/A
9Wx7BE0J6V6 NLM CDEs 12-02-2025-download