Descriptive
On average, children lived 1930 m (SD: 2688) away from school and adolescents 3468 m (SD: 3210). The mean duration of the school trip was 13.28 min (SD: 8.84) for children and 19.50 min (SD: 13.30) for adolescents. AST was significantly more common in summer (morning: 53.64%, afternoon: 54.58%) than in winter (morning: 43.18%, afternoon: 44.49%, Sixty-three percent of the children (