Age, gender and SES
SECONDARY
The share taking AST decreased with age (OR = 0.94 per year, CI = 0.9–0.99 Children in secondary school had significantly lower odds of AST than children in primary school (OR = 0.57, CI = 0.45–0.74, Walking was more frequently reported than cycling. However, the share of cyclers increased with age while the share of walkers decreased (Table Distribution of means of transportation on the way to school in summer by age (values are % and (n))25.51%(273)15.65%(41)24.66%(55)26.79%(60)28.66%(47)30.15%(41)47.54%(29)16.17%(173)25.95%(68)28.25%(63)8.48%(19)6.10%(10)5.88%(8)8.20%(5)30.19%(323)12.98%(34)15.70%(35)42.41%(95)46.34%(76)46.32%(63)32.79%(20)28.13%(301)45.42%(119)31.39%(70)22.32%(50)18.90%(31)17.65%(24)11.48%(7)The prevalence of AST did not significantly differ by gender (children: ORChildren and adolescents with a high SES had significantly higher odds of AST compared to those with a middle to low SES (OR = 1.69, CI 1.3–2.21, The correlation between socioeconomic status and active school transport differs by season and direction of travel: For both children and adolescents, the odds of AST decreased significantly as the distance between home and school increased (children: ORAssociation between active school transport and distance for children and adolescents: In both groups, the probability of active school transport decreased as the distance between home and school growsFor example, the estimated probability for AST was 85.97% for children living 250 m, 68.83% for children living 1500 m and 38.43% for children living 2500 m away from school. Likewise, for adolescents living 650 m away from school, the probability for AST was 76.86%, whilst it was 45.81% for adolescents living 3500 m away from school and 16.68% for adolescents living 6500 m away from school. For adolescents living close to their schools, there was a positive correlation between distance and AST (OR = 1.37, CI = 1.03–1.88, 