Child and Adolescent Twin Study in Sweden (CATSS)
The CATSS is a longitudinal twin study investigating genetic and environmental factors affecting health, behaviour, somatic, and mental health problems in twins during childhood and adolescence. The study is part of the Swedish Twin Registry, which was established in the 1960s and contains information on approximately 87,000 twin pairs born in Sweden since 1886. The CATSS recruits all twins born in Sweden since July 1, 1992, and surveys them at 9, 12, 15, 18, and 24 years of age.
Study design
Cohort - twin, Registry
Number of participants at first data collection
17,220 (participants as of 2010)
Recruitment is ongoing
Age at first data collection
9 years (participants)
Participant year of birth
Varied (participants)
Participant sex
All
Representative sample at baseline?
No
Sample features
Country
Year of first data collection
2004
Primary Institutions
Karolinska Institute (Karolinska Institutet, KI)
Links
ki.se/forskning/tvillingstudien-catss
gu.se/en/research/child-and-adolescent-twin-sudy-in-sweden-catss
Profile paper DOI
Funders
Swedish Prison and Probation Service
Bank of Sweden Tercentenary Foundation (Stiftelsen Riksbankens Jubileumsfond)
Karolinska Institute (Karolinska Institutet, KI)
National Board of Forensic Medicine
Stiftelsen Söderström - Königska sjukhemmet
Ongoing?
Yes
Data types collected
- Computer, paper or task testing (e.g. cognitive testing, theory of mind doll task, attention computer tasks)
- Interview – face-to-face
- Interview – phone
- Self-report questionnaire – online
- Self-report questionnaire – unspecified
- None
- None
- Other government data
Engagement
Keywords
Consortia and dataset groups
