Researchers show that pre- and post-natal exposure to tobacco is associated with a risk of behavioral disorders in children.
Exposure to ETS in the postnatal period, alone or in association with exposure during pregnancy, increases the risk of behavioural disorders in primary school children,” explains Isabella Annesi-Maesano, Inserm Research Director.
These data come from the 6 Cities Study (see box), which targeted 5,221 primary school children. Prenatal (in utero smoking) and postnatal exposure to tobacco smoke in the home was assessed using a standardised questionnaire completed by the parents. Behavioural disorders were assessed via the Strengths and Difficulties Questionnaire (SDQ) used to assess the behavioural and psychosocial functioning of the children, which was also completed by the parents.
In greater detail, emotional disorders are associated with exposure to ETS during both the prenatal and postnatal periods, which concerns 21% of the children in the study. Conduct disorders are also associated with ETS exposure in these children. The association also exists in cases of prenatal or postnatal exposure alone, but is less pronounced.