Effects of a school tobacco policy on student smoking and snus use
Objective: A school tobacco policy (STP) commonly is used to reduce smoking among adoles-cents, but the effectiveness of such programs is unclear. We evaluated the impact of an STP on tobacco use in 4 schools. Methods: The study included 4 intervention and 4 control schools, located in the inner city of Stockholm, Sweden. Schools self-selected for assignment to either an intervention program or a