The goal of the Interdisciplinary Longitudinal Study of Adult Development (ILSE) is to identify individual, social and economic determinants of a healthy, self-determined and satisfied ageing. The population-based, representative ILSE study contributes substantially to interdisciplinary basic research, has far-reaching importance for the development of prevention programs to improve the quality of life in middle and old age, and takes on essential sociopolitical topics (i.e., voluntary engagement, job situation of older workers, anticipation of need of care). 
As an interdisciplinary longitudinal study (involved disciplines: developmental psychology, medicine, ecological gerontology, geronto-psychiatry, psychosomatics, dentistry, media research) the ILSE 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 biographical 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.

Study Design

Study Design Cohort
General Information on Follow Up (profile, frequency).

Subjects have been followed up since 1993/94 for an average time of 12 years within three examination waves.

Recruitment Target
  • Individuals
Number of Participants

1,002

Supplementary Information

At the first measurement point, the ILSE sample consisted of 1390 persons from East (research centres: Leipzig and Rostock) and West Germany (research centres: Heidelberg, Bonn and Erlangen-Nuremberg). The representative ILSE sample was stratified by sex and cohort membership (born 1930-32 and 1950-52, respectively).

Access

Access to external researchers or third parties provided or foreseen.

Data (questionnaire-derived, measured...)

Biosamples

Marker Paper

Sattler, C., Wahl, H.-W., Schröder, J., Kruse, A., Schönknecht, P., Kunzmann, U., Braun, T., Degen, C., Nitschke, I., Rahmlow, W., Rammelsberg, P., Siebert, J. S., Tauber, B., Wendelstein, B., Zenthöfer, A. (in press). Interdisciplinary Longitudinal Study on Adult Development and Aging (ILSE). In N. Pachana (Ed.), Encyclopedia of Geropsychology: New York: Springer.

Supplementary Information

Zusätzliche Informationen befinden sich hier (in Deutsch): https://www.klinikum.uni-heidelberg.de/ILSE.109593.0.html

Study Timeline

Each colour in the timeline graph below represents a separate Study Population, while each segment in the graph represents a separate Data Collection Event. Clicking on a segment gives more detailed information on a Data Collection Event.

Populations

ILSE Population C50

This population was born between 1950 and 1952 and resided in East and West Germany at the start of the study.  

Sources of Recruitment

General Population
  • Volunteer enrolment
Supplementary Information

Participants were randomly selected and recruited on the basis of community registers which comprise data on all inhabitants of German communities.

Selection Criteria

Age Minimum age 40, Maximum age 42
Country Germany
Territory

East Germany (Leipzig and Rostock) and West Germany (Heidelberg, Bonn and Erlangen-Nuremberg)

Other

German speaking population

Sample Size

Number of Participants

502

Data Collection Events

NameDescriptionStartEnd
ILSE - Wave 1

Participants were carefully screened for&nbsp...

19931996
ILSE - Wave 2

Participants were carefully screened for&nbsp...

19972000
ILSE - Wave 3

Participants were carefully screened for&nbsp...

20052008
ILSE - Wave 4

Participants were carefully screened for&nbsp...

20142016

ILSE Population C30

This population was born between 1930 and 1932 and resided in East and West Germany at the start of the study. 

Sources of Recruitment

General Population
  • Volunteer enrolment
Supplementary Information

Participants were randomly selected and recruited on the basis of community registers which comprise data on all inhabitants of German communities.

Selection Criteria

Age Minimum age 60, Maximum age 62
Country Germany
Territory

East Germany (Leipzig and Rostock) and West Germany (Heidelberg, Bonn and Erlangen-Nuremberg)

Other

German speaking population

Sample Size

Number of Participants

500

Data Collection Events

NameDescriptionStartEnd
ILSE - Wave 1

Participants were carefully screened for&nbsp...

19931996
ILSE - Wave 2

Participants were carefully screened for&nbsp...

19972000
ILSE - Wave 3

Participants were carefully screened for&nbsp...

20052008
ILSE - Wave 4

Participants were carefully screened for&nbsp...

20142016
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Variables Classification