<?xml version="1.0" encoding="UTF-8"?>
<study name="The Mayo Clinic Study of Aging" subjects="2122" design="longitudinal" url="https://www.mayo.edu/research/centers-programs/alzheimers-disease-research-center/research-activities/mayo-clinic-study-aging" biospecimen="false" clinical="true" demographics="true" genetics="false" otherData="false">
 <focus name="Aging"/>
 <description>
<![CDATA[The objectives of the Mayo Clinic Study of Aging were to determine in the population of Olmsted County, Minn., (1) the prevalence of MCI; (2) the incidence of MCI; (3) conversion rates from MCI to dementia or AD; (4) risk factors for MCI; and (5) risk factors for the progression from MCI to dementia or AD. The long-term goals of the Mayo Clinic Study of Aging are to develop tools to predict and prevent cognitive decline and dementia, develop risk-prediction models for cognitive impairment, and conduct aging-related research to promote successful aging.]]>
 </description>
 <cohorts>
  <cohort name="Participant" subjects="2122"/>
 </cohorts>
 <modalities>
  <modality name="MRI" description="Magnetic Resonance Imaging" subjects="2122"/>
  <modality name="DTI" description="Diffusion Tensor Imaging" subjects="1960"/>
  <modality name="PET" description="Positron Emission Tomography" subjects="2096"/>
 </modalities>
 <ages min="30" max="89"/>
</study>
