Setting: Twelve schools in three cities in Finland. Subjects: The seventh grade pupils (a total of 1469 at the mean age of 13?8 years). Questionnaire data were available from 726 pupils and dietary data from a subgroup of 40% (n 306).
Setting: Twelve schools in three cities in Finland. Subjects: The seventh grade pupils (a total of 1469 at the mean age of 13?8 years). Questionnaire data were available from 726 pupils and dietary data from a subgroup of 40% (n 306).