Betula Project
The Betula project is a longitudinal study on ageing in Sweden that started with 1,000 participants aged 35 to 80 years, in 1988. The original and supplemental samples have been followed every five years since the study onset. Supplemental samples have included individuals aged 25 to 90 years. Over time, attrition has occurred naturally due to mortality and other factors.
Study design
Cohort
Number of participants at first data collection
1,000 (participants)
Age at first data collection
35 - 80 years (participants)
Participant year of birth
Varied (participants)
Participant sex
All
Representative sample at baseline?
No
Sample features
Country
Year of first data collection
1988
Primary Institutions
Umeå University (Umeå Universitet)
Links
umu.se/en/research/projects/betula---aging-memory-and-dementia/
Profile paper DOI
Funders
Bank of Sweden Tercentenary Foundation (Stiftelsen Riksbankens Jubileumsfond)
Ministry of Science, Innovation and Universities (Ministerio de Ciencia, Innovación y Universidades)
Swedish Council for Planning and Coordination of Research
Swedish Council for Research in the Humanities and Social Sciences
Swedish Council for Social Research
Ongoing?
No
Data types collected
- Physical or biological assessment (e.g. blood, saliva, gait, grip strength, anthropometry)
- Self-report questionnaire – paper or computer assisted
- None
- Positron Emission Tomography (PET)
- None
Engagement
Keywords
Consortia and dataset groups
