Titre :
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Birth Weight Standardized to Gestational Age and Intelligence in Young Adulthood : A Register-based Birth Cohort Study of Male Siblings. (2010)
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Auteurs :
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Willy ERIKSEN ;
SUNDET (Jon-M) : NOR. Department of Psychology. Faculty of Social Sciences. University of Oslo. Oslo. ;
TAMBS (Kristian) : USA. Virginia Institute for Psychiatric and Behavioral Genetics. Virginia Commonwealth University. Richmond. VA. ;
Division of Mental Health. Norwegian Institute of Public Health. Oslo. NOR
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Type de document :
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Article
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Dans :
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American journal of epidemiology (vol. 172, n° 5, 2010)
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Pagination :
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530-536
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Langues:
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Anglais
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Mots-clés :
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Poids naissance
;
Intelligence
;
Adulte
;
Evolution
;
Fratrie
;
Norvège
;
Epidémiologie
;
Homme
;
Europe
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Résumé :
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[BDSP. Notice produite par INIST-CNRS mCR0xEm8. Diffusion soumise à autorisation]. The authors aimed to determine the relation between birth-weight variations within the normal range and intelligence in young adulthood. A historical birth cohort study was conducted. Data from the Medical Birth Register of Norway were linked with register data from the Norwegian National Conscript Service. The sample comprised 52,408 sibships of full brothers who were born singletons at 37-41 completed weeks'gestation during 1967-1984 in Norway and were intelligence-tested at the time of mandatory military conscription. Generalized estimating equations were used to fit population-averaged panel data models. The analyses showed that in men with birth weights within the 10th-90th percentile range, a within-family difference of 1 standard deviation in birth weight standardized to gestational age was associated with a within-family difference of 0.07 standard deviation (99% confidence interval : 0.03,0.09) in intelligence score, after adjustment for a range of background factors. There was no significant between-family association after adjustment for background factors. In Norwegian males, normal variations in intrauterine growth are associated with differences in intelligence in young adulthood. This association is probably not due to confounding by familial and parental characteristics.
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