uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Preterm birth, social disadvantage, and cognitive competence in Swedish 18- to 19-year-old men
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Child and Adolescent Psychiatry.
Show others and affiliations
2010 (English)In: Pediatrics, ISSN 0031-4005, E-ISSN 1098-4275, Vol. 125, no 1, e67-e73 p.Article in journal (Refereed) Published
Abstract [en]

OBJECTIVE: The aim was to study the impact of a range of gestational ages (GAs) on cognitive competence in late adolescence and how this effect is modified by contextual social adversity in childhood. METHODS: This was a register study based on a national cohort of 119664 men born in Sweden from 1973 to 1976. Data on GA and other perinatal factors were obtained from the Medical Birth Register, and information on cognitive test scores was extracted from military conscription at the ages of 18 to 19 years. Test scores were analyzed as z scores on a 9-point stanine scale, whereby each unit is equivalent to 0.5 SD. Socioeconomic indicators of the childhood household were obtained from the Population and Housing Census of 1990. The data were analyzed by multivariate linear regression. RESULTS: The mean cognitive test scores decreased in a stepwise manner with GA. In unadjusted analysis, the test scores were 0.63 stanine unit lower in men who were born after 24 to 32 gestational weeks than in those who were born at term. The difference in global scores between the lowest and highest category of socioeconomic status was 1.57. Adjusting the analysis for the childhood socioeconomic indicators decreased the effect of GA on cognitive test scores by 26% to 33%. There was also a multiplicative interaction effect of social adversity and moderately preterm birth on cognitive test scores. CONCLUSIONS: This study confirms previous claims of an incremental association of cognitive competence with GA. Socioeconomic indicators in childhood modified this effect at all levels of preterm birth.

Place, publisher, year, edition, pages
2010. Vol. 125, no 1, e67-e73 p.
Keyword [en]
preterm, IQ, socioeconomic, inequity, follow-up
National Category
Medical and Health Sciences
URN: urn:nbn:se:uu:diva-112750DOI: 10.1542/peds.2008-3329ISI: 000273348000037PubMedID: 19969613OAI: oai:DiVA.org:uu-112750DiVA: diva2:287773
Available from: 2010-01-19 Created: 2010-01-19 Last updated: 2016-05-02

Open Access in DiVA

No full text

Other links

Publisher's full textPubMed

Search in DiVA

By author/editor
Lindblad, Frank
By organisation
Child and Adolescent Psychiatry
In the same journal
Medical and Health Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 188 hits
ReferencesLink to record
Permanent link

Direct link