Interventions
Category:social influences vs control.
Programme deliverer:Teachers
Intervention:8x1-hr sessions:1)written exercises on medium and long-term effects of robacco (received also by control group);2)audiovisuals on short-term effects and also components causing these effects;3)critical commentary and group discussion on text in catalan by an adolescent smoker and reasons why started smoking,then individual and group discussion;4)computation in maths class of loss of respiratory capacity,class discussions;5)situations where experienced pressures from friends to smoke,practised refusal skills;6)discussed text that described a family celebration during which children were invited to smoke;7)tobacco companies' need for new markets among youth and women, and publicity strategies;8)rights of nonsmokers for clean air and not to be pressured by smokers to smoke
Control:Usual school district 1-hr annual lecture on effects of tobacco on health.