Individual Study / AYLS

Arvo Ylppö Longitudinal Study

Arvo Ylppö Longitudinal Study

AYLS logo
Initiatives -
* to identify the pre-/perinatal risk factors of developmental disorders, and behavior and cognitive problems; * to compare the neonatal and later life outcomes of children born in Finland and Germany, where early neonatal intensive care differed. *Note: All published information has been collected from the article referenced in the Marker Paper box below. Therefore, there may be variations with more advanced versions of the study.*
Start Year
By grants from the Academy of Finland, the Emil Aaltonen Foundation, the University of Helsinki, the Juho Vainio Foundation, the Signe and Arne Gyllenberg Foundation, the Wihur Foundation, the Pediatrics Research Fund, and The Ministry of Research and Technology of the Federal Republic of Germany.


Investigators Contacts
  • Dr. Professor Katri Räikkönen
    University of Helsinki


Study design
Population cohort
Follow Up
Follow-up assessments were conducted at 5, 20 and 56 months and at the participants age of 23-25 years.

Marker Paper

Kumpulainen SM, Heinonen K, Salonen MK, Andersson S, Wolke D, Kajantie E, Eriksson JG, Raikkonen K. Childhood cognitive ability and body composition in adulthood. Nutr Diabetes. 2016 Aug 15;6(8):e223. doi: 10.1038/nutd.2016.30.

PUBMED 27525818


Sources of Recruitment
  • Individuals

Number of participants

Number of participants
Number of participants with biosamples


Availability of data and biosamples