English Longitudinal Study of Ageing (ELSA)

The English Longitudinal Study of Ageing (ELSA) is a longitudinal study of aged adults in England. The study was initiated in 2002 and is conducted every 2 years. The mission of ELSA is to gather data on the health, social, economic, and psychological aspects of aging in the English population. This study is conducted by a team of researchers from different institutions, led by the University College London. This study is funded by NIA/NIH in the US and the Department of Health and the Medical Research Council in the UK. The study contains nine main waves, from 2002-2003 to 2018-2019.

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Midlife in the United States (MIDUS)

Midlife in the United States (MIDUS) is a longitudinal research project that aims to examine the physical, psychological, and social factors that contribute to health and well-being in midlife and beyond. This study is conducted by a multidisciplinary team led by University of Wisconsin-Madison and is funded by various sources including NIA, NSF, NIMH, and multiple academic institutions. MIDUS has been conducted in three stages: MIDUS I, MIDUS II, AND MIDUS III. 

 

MIDUS I was conducted between 1995 and 1996 and involved data collection from over 7,000 adults aged 25 to 74. This original data collection focused on physical health, mental health, social relationship, and life experiences. 

 

MIDUS II was conducted between 2004 and 2006 and collected data from more than 4900 of the MIDUS I participants. This second phase included additional measures for mental and physical health and also new information on cognitive function, genetics, and biomarkers. 

 

MIDUS III was conducted between 2013 and 2014 and collected data of more than 4500 participants from MIDUS I. This latest phase focused on aging and included information on physical and cognitive function, health care utilization, and social support.

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National Social Life, Health, and Aging Project (NSHAP)

The National Social Life, Health, and Aging Project (NSHAP) is a longitudinal, population-based study of health and social factors, aiming to understand the well-being of older, community-dwelling Americans by examining the interactions among physical health and illness, medication use, cognitive function, emotional health, sensory function, health behaviors, social connectedness, sexuality, and relationship quality. This study is conducted by a team of researchers from several academic institutions, led by the University of Chicago, and is funded by NIA and National Opinion Research Center (NORC) at the University of Chicago. The study has two stages. The first stage was conducted between 2005 and 2006 and collected data from 3,005 adults aged 57-85 nationally. The second stage was conducted between 2010 and 2011, including 1,400 participants from the first stage.

 

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