Population based, controlled study of behavioural problems and psychiatric disorders in low birthweight children at 11 years of age.
OBJECTIVE
To evaluate the risk of long term behavioural problems and psychiatric disorders associated with being born with low birth weight. DESIGN/STUDY GROUPS: A population based, controlled follow up study at 11 years of age of 130 low birthweight (LBW) children weighing less than 2000 g at birth who were without major handicaps, and a random sample of 131 normal birthweight (NBW) children born at term weighing over 3000 g.


METHODS
Validated questionnaires addressing behaviour completed by mothers and teachers and child evaluation by child psychiatrist using a semistructured interview.


RESULTS
Behavioural problems, as defined by abnormal scores on more than four of 32 measures, were found in 40% of LBW children compared with 7% of NBW children (odds ratio (OR) 8.2, 95% confidence interval (CI) 3 to 25, p = 0001). A psychiatric disorder was diagnosed in 27% of the LBW children compared with 9% of the NBW children (OR 3.1, 95% CI 1.5 to 6.5, p = 0.001). The LBW children were more often inattentive, had social problems, and low self esteem. None of the pre-, neo-, or peri-natal variables in the LBW group were statistically significant predictors of behavioural outcomes or the presence of psychiatric disorders. Behavioural problems and psychiatric disorders were as common in those with birth weight less than 1500 g as those with birth weight 1500-2000 g.


CONCLUSIONS
An increased risk of behavioural problems and psychiatric disorders persists in LBW adolescents.
Department of Paediatrics, University of Bergen, Norway. ielg@haukeland.no
I
I
Elgen
K
K
Sommerfelt
T
T
Markestad
D002648:Child; D002653:Child Behavior Disorders / Q000209:etiology; D005260:Female; D005865:Gestational Age; D006801:Humans; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D016015:Logistic Models; D008297:Male; D001523:Mental Disorders / Q000209:etiology*; D012044:Regression Analysis; D012307:Risk Factors