Individual Study / BEST(BLS)

The Bavarian Longitudinal Study (BLS)/Bayerische Entwicklungsstudie (BEST)

The Bavarian Longitudinal Study (BLS)/Bayerische Entwicklungsstudie (BEST)

BEST(BLS) logo
Initiatives -
The study’s initial aims were : * to document the prevalence of somatic and psychosocial outcomes of neonatal morbidity and early delivery in an unselected population of children in Germany; * to evaluate the impact of a regionalised neonatal service to the locally organised service provisions in Germany. *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
The study was supported by grants PKE24, JUG14, 01EP9504, and 01ER0801 from the German Federal Ministry of Education and Science
Supplementary Information


Investigators Contacts
  • Dr. Nicole Baumann
    University of Warwick
  • Dr. Dieter Wolke
    The University of Warwick


Study design
Follow Up
Two assessments (1991-1994) were carried out at 6 and 8 years. Two follow-up assessments in adolescence and adulthood focussed on the highest risk group (Very Preterm/Very Low Birth Weight) of the original sample only and a control group of full term born adolescents/adults followed since birth. One assessment each was carried out at 13 years (1998-1999) and at 26 years (2010-2014).

Marker Paper

Wolke D, Schmid G, Schreier A, Meyer R. Crying and feeding problems in infancy and cognitive outcome in preschool children born at risk: a prospective population study. J Dev Behav Pediatr. 2009 Jun;30(3):226-38. doi: 10.1097/DBP.0b013e3181a85973.

PUBMED 19433987


Sources of Recruitment
  • Individuals

Number of participants

Number of participants
Number of participants with biosamples
Supplementary Information
Very preterm (< 32 weeks) and low birth weight (< 1500g) infants


Availability of data and biosamples