Prematurity and low birth weight increase risk of hyperkinetic disorder
Jun 5, 2006 - 4:48:00 PM
, Reviewed by: Priya Saxena
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Single parenthood, social and economic deprivation, and young age at parenthood were all risk factors for HKD, but the results still held true even after these had been taken into account and the figures adjusted accordingly.
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By Archives of Disease in Childhood,
[RxPG] Premature or low birthweight babies are up to three times as likely to become hyperactive, with low attention spans, suggests research published ahead of print in the Archives of Disease in Childhood.
Hyperactivity, low attention span, and impulsive behaviour characterise the syndrome known as hyperkinetic disorder, or HKD for short. It is one of the most common mental disorders diagnosed among children, say the authors.
The Danish research team compared the birth records of 834 children with confirmed HKD with those of 20,100 children with no mental disorders. All the children were born between 1980 and 1994.
Children born at between 34 and 36 weeks were around 70% more likely to develop the disorder than children born at term. Babies at born below 34 completed weeks were almost three times as likely to develop the disorder.
Low birthweight babies born at term were also at risk, the study showed.
Babies born at term, but weighing 1500 to 2499 g at birth were 90% more likely to develop HKD, while those weighing between 2500 and 2999 g were 50% more likely to develop the disorder than babies weighing over 2999 g at birth.
Of the 834 children with confirmed HKD, nine out of 10 were boys. The age at which the children were diagnosed ranged from 2 to 18 years.
Single parenthood, social and economic deprivation, and young age at parenthood were all risk factors for HKD, but the results still held true even after these had been taken into account and the figures adjusted accordingly.
Publication:
Gestational age, birth weight, and the risk of hyperkinetic disorder, Online First Arch Dis Child 2006; doi.10.1136/adc.2005.099972
On the web:
www.bmj.com 
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