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Cohort Acronym

Cohort type
General population-based cohort

Alzheimer's disease, Mild cognitive impairment (MCI)

Participant type
No diagnosis

Recruitment Period 1993-1996 
Sample size at start or planned sample size if still recruiting 1001  
Estimated Current Sample Size 0 to 4,999 
Age at Recruitment >40   
Gender Male and Female 

ILSE is an interdisciplinary longitudinal study that offers the opportunity to analyze inter- and intra-individual differences and changes over the life-span as well as relations between environmental factors, behavioral aspects, life-events, health behaviors, mental and physical health and well-being. The bio-graphical approach pursued by the ILSE-study is based on the assumption that the quality of developmental experiences in early life-phases influence the performance and possibilities of adaptation in later life in a unique way.

At the first measurement point, the ILSE sample consisted of 1390 persons from East (re-search centres: Leipzig and Rostock) and West Germany (research centres: Heidelberg, Bonn and Erlangen-Nuremberg). Stratified by sex and cohort membership (born 1930-32 and 1950-52, respectively) the representative ILSE-sample was examined by a interdisciplinary research team. The first round of data collection was conducted between 1993 and 1996, the second round with n = 994 participants from the data collection centres Heidelberg, Leipzig und Rostock (return rate = 90%) was conducted between 1997 and 2000. The third round of data collection which started in January 2005 ended in 2007. A fourth wave was conducted and completed between 2014 and 2016

Country Germany 
Contact details
Institution name Universität Heidelberg 
Website http://www.psychologie.uni-heidelberg.de/ae/apa/research/ilse.html 
Principal Investiator (PI) Hans-Werner Wahl & Johannes Schröder 
Contact email PI email: [email protected]; [email protected] Email: [email protected] 
Contact phone number  
Address Abteilung für Psychologische Alternsforschung
Psychologisches Institut der Universität Heidelberg
Bergheimer Str. 20
69115 Heidelberg 
Funders (Core support) Dietmar Hopp Foundation (since 2013)
Bundesministerium für Familie, Senioren, Frauen und Jugend (BMFSFJ) 

Variables Collected

Brain related measures: N/A
Funtional rating: Individual psychological
Anthropometric: N/A
Physical: Hearing and Vision
Biological samples: N/A
Genotyping: N/A
Brain imaging: N/A
Brain banking: N/A
Lifestyle: N/A
Socio-economic: Education, Family circumstances, Housing and accommodation, Income and finances, Informal support, Marital status, Occupation and employment
Health service utilisation: N/A
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