Arvo Ylppö Longitudinal Study (AYLS)
The AYLS is the Finnish arm of the Bavarian-Finnish Longitudinal Study. The original aim was to compare the outcomes of neonatal care in Finland and in Bavaria, Germany, up to 56 months of age. The study was then extended into adulthood to understand long-term somatic, cognitive, behavioural and emotional consequences of early life adversities. AYLS participants were 1,500 infants admitted to neonatal wards and 658 control infants born without evidence of neonatal illness in Uusimaa, Finland, born from 1985 to 1986. Mothers completed a baseline perinatal questionnaire, and infants were followed up at five, 20 and 56 months. An additional wave of follow-up was carried out when the infants reached adulthood, at 24 to 26 years.
Study design
Cohort - birth, Cohort - clinical, Cohort
Number of participants at first data collection
2,193 (parent-child dyads)
Age at first data collection
Birth (children)
Varied (parents)
Participant year of birth
1985 - 1986 (children)
Varied (parents)
Participant sex
All
Representative sample at baseline?
No
Sample features
Country
Year of first data collection
1985
Primary Institutions
University of Helsinki (Helsingin yliopisto)
Profile paper DOI
Funders
Academy of Finland
Federal Ministry of Education and Research (Bundesministerium für Bildung und Forschung, BMBF) now known as Federal Ministry of Research, Technology and Space (Bundesministerium für Forschung, Technologie und Raumfahrt, BMFTR)
Ongoing?
No
Data types collected
- Interview – face-to-face
- Physical or biological assessment (e.g. blood, saliva, gait, grip strength, anthropometry)
- Self-report questionnaire – unspecified
- None
- None
- None
Engagement
Keywords
Consortia and dataset groups
