9. Countries which have conducted the competition in Europe School year 1989/90: Finland started the competition School year 1997/98: 7 countries participated School year 2005/06: 22 countries participated In some school years > 700,000 pupils and 30,000 classes participated
14. Outcome evaluation Combined results of four published studies - Percentage of current smokers - Net difference: 6 per cent points OR=0.65 (95% CI: 0.57-0.75) Number Needed to Prevent: 17 N=12,812 Follow-up: 12 to 24 months Gesundheitswesen 2007; 69:38-44
21. (Un-)realistic expectations about the effectiveness of the competition …and school-based prevention programmes in general We have to have in mind, that the competition is a low level campaign in one setting.