"Study Name","Acronym","Type","Status","Country","Start Year","Years of Follow-up","Study Design","Recruitment Target","Number of Participants","Number of Participants with biosamples","Population","Sources of Recruitment","Minimum Age","Maximum Age","Number of Participants","Number of Participants with biosamples","Number of Data Collection Events" "Canadian Longitudinal Study on Aging","CLSA","Individual Study","Published","Canada","2010","9","Cohort","Individuals","50000","30000","CLSA sub-population (Telephone interview) ","Participants from existing studies","45","85","20000","","2" "Canadian Longitudinal Study on Aging","CLSA","Individual Study","Published","Canada","2010","9","Cohort","Individuals","50000","30000","CLSA sub-population (In-depth)","General population","45","85","30000","30000","2" "The Comprehensive Assessment of Neurodegeneration and Dementia Study","COMPASS-ND","Individual Study","Published","Canada","2016","3","Cohort","Individuals","1650","1650","COMPASS-ND population","Participants from existing studies, Specific population","50","90","1650","1650","2" "English Longitudinal Study of Ageing","ELSA","Individual Study","Published","United Kingdom","2002","17","Cohort","Individuals","12099","8643","ELSA population","Specific population","50","100","12099","8643","8" "Health and Retirement Study","HRS","Individual Study","Published","United States","1992","27","Cohort","Individuals","","","HRS sub-sample","General population, Participants from existing studies","51","","15497","10026","11" "Health and Retirement Study","HRS","Individual Study","Published","United States","1992","27","Cohort","Individuals","","","AHEAD sub-sample","General population, Participants from existing studies","70","","10229","2979","10" "Health and Retirement Study","HRS","Individual Study","Published","United States","1992","27","Cohort","Individuals","","","The Children of the Depression (CODA) sub-sample","General population, Participants from existing studies","68","","3200","1770","8" "Health and Retirement Study","HRS","Individual Study","Published","United States","1992","27","Cohort","Individuals","","","The War Baby (WB) sub-sample","General population, Participants from existing studies","51","","3619","2539","8" "Health and Retirement Study","HRS","Individual Study","Published","United States","1992","27","Cohort","Individuals","","","The Early Baby Boomer (EBB) sub-sample","General population, Participants from existing studies","51","","4420","3461","5" "Health and Retirement Study","HRS","Individual Study","Published","United States","1992","27","Cohort","Individuals","","","The Mid Baby Boomer (MBB) sub-sample","General population, Participants from existing studies","51","","4992","4992","2" "IALSA/BRAIN Generic Harmonization Project","IALSA/BRAIN - Generic HP","Harmonization Study","Published","","","","","","","","IALSA/BRAIN Generic Harmonization Project population","","","","","","0" "Longitudinal Aging Study Amsterdam","LASA","Individual Study","Published","Netherlands","1992","27","Cohort","Individuals","5132","4188","LASA first Cohort","Participants from existing studies","55","85","3107","2840","7" "Longitudinal Aging Study Amsterdam","LASA","Individual Study","Published","Netherlands","1992","27","Cohort","Individuals","5132","4188","LASA second Cohort","General population, Participants from existing studies","55","65","1002","748","4" "Longitudinal Aging Study Amsterdam","LASA","Individual Study","Published","Netherlands","1992","27","Cohort","Individuals","5132","4188","LASA third cohort","General population, Participants from existing studies","55","65","1023","600","1" "Midlife in the U.S.","MIDUS","Individual Study","Published","Japan, United States","1995","24","Cohort","Families, Individuals","8727","1637","MIDUS Population","General population, Specific population","25","74","7108","1054","7" "Midlife in the U.S.","MIDUS","Individual Study","Published","Japan, United States","1995","24","Cohort","Families, Individuals","8727","1637","MIDUS Milwaukee African American","General population, Specific population","35","85","592","201","5" "Midlife in the U.S.","MIDUS","Individual Study","Published","Japan, United States","1995","24","Cohort","Families, Individuals","8727","1637","MIDUS Japan","General population","30","79","1027","382","1" "Oregon Brain Aging Study","OBAS","Individual Study","Published","United States","1989","30","Cohort","Individuals","305","297","Oregon Brain Aging Study I","General population, Participants from existing studies","55","","216","209","1" "Oregon Brain Aging Study","OBAS","Individual Study","Published","United States","1989","30","Cohort","Individuals","305","297","Oregon Brain Aging Study II","Participants from existing studies","85","","89","88","1" "Origin of Variances in the Oldest-Old: Octogenarian Twins","OCTO-Twin","Individual Study","Published","Sweden","1991","11","Cohort","Families","702","552","Octogenerian Twins","Other, Participants from existing studies","79.0","98.0","702","552","5" "Swedish Adoption/Twin Study of Aging","SATSA","Individual Study","Published","Sweden","1984","35","Cohort","Families","2019","859","SATSA - Population","General population","26","","2019","859","19" "Whitehall II","WH-II","Individual Study","Published","United Kingdom","1985","34","Cohort","Individuals","10308","10308","Whitehall II population","General population, Participants from existing studies","35","55","10308","","11"