School context variables and students' smoking. Testing a mediation model through multilevel analysis.


BACKGROUND/AIMS This study applied a multilevel approach to examine the associations between school smoking policy and student smoking. It was tested whether individual characteristics are mediators of school policy effects. METHODS On the basis of cross-sectional data from 3,364 students and school principals from 40 schools in Germany, two multilevel… (More)
DOI: 10.1159/000110411