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National Alzheimer's Coordinating Center
National Alzheimer's Coordinating Center
The NIA Alzheimer’s Disease Research Centers Program
National Alzheimer’s Coordinating Center

Multimodal Query Tool

How to Use This Tool

  1. Use the filters to set your selection criteria
  2. Run multiple queries as needed (e.g. for control/test groups)
  3. Download the NACCIDs for the participants that meet your selections criteria
  4. Record the filters for your selection so they can be used as a reproducible record for publications (your filter selections are listed in the top right corner of the tool)
  5. Request full NACC data sets via the NACC Quick Access File Data Request System (Sign a DUA to access Quick Access Files for a variety of data modalities)
  6. Use your preferred statistical software to restrict the Quick Access File data to the participants that met your criteria
  7. Use the NACCID list for your participant selection (“shopping list”) to expedite accessing additional data modalities for these participants from partner repositories (e.g. NCRAD, NIAGADS, ADKP, and LONI)
Read more about the purpose of this toolView a demo of how to use the tool

The MQT-v1 release is a prototype and is undergoing validation and further development. We’re developing new features, with a major update planned for release in late Q3 2025. There are some minor discrepancies between data that is searchable via the MQT and the March 2025 data freeze Quick Access File (QAF). Please keep this in mind as you are using the tool and reach out to us if you have any questions (nacchelp@uw.edu). This will be resolved once the NACC QAF is migrated to the new NACC Data Platform in Q4 2025.

The Multimodal Query Tool (MQT) is actively evolving. Please take 5 minutes to share your thoughts via this feedback form. Your input will directly inform future versions and help us better support your research.