"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","","","HRS - 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","","","HRS - 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","","","HRS - 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","","","HRS - 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","","","HRS - 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","OBAS - 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","OBAS - 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","OCTO-Twin - Population","Other, Participants from existing studies","79","98","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"