Passive smoking linked to antisocial behaviour in kids

Among a birth cohort of 2000 Quebec children, 34% and 8% of parents reported transient and continuous levels of secondhand smoke, respectively.

The exposed group were 12% more likely to report they hit, bit or kicked other children and were 11% more likely to have teachers report they engaged in risky, dangerous or antisocial behaviour.

The differences were modest but robust, and it is the first study on secondhand smoke to control for antisocial behaviour in the parents.