1 0.96 Socio- demographic Grade Grade 7 Grade 8 Sex Boys 1 Girls 1.04 Weight status Normal weight 1 Overweight/Obese 1.05 Years of highest parent education 0.87** Parent born abroad Both/one parent born in Canada - Both born abroad - Having car at home No 1 Yes 0.20*** Behavioural MVPA 0-4 day/wk 1 ≥5 days/wk 0.91 Psychological Perceived physical health Fair/poor - Excellent/very good/good - Decision-making on mode choice Never/rarely/ 1 sometimes Often/always 1.70** Environmental Travelled to/from school 0-15 minutes 1 16-30 minutes 0.38*** ≥31 minutes 0.07*** Living in urban area Rural 1 Urban 5.17*** Regions Toronto 1 North 0.25* West 0.50 East 0.24** 0.71-1.29 0.77-1.40 0.76-1.46 0.78-0.97 0.11-0.37 0.70-1.19 - - - - 1.18-2.46 0.20-0.70 0.03-0.20 0.08-0.77 0.24-1.04 0.10-0.57 1 2.14-12.48 3.00** 1 0.83 1 1.00 1 0.83 0.83** 1 0.22** 1 1.27 1 1.35 1 0.40** 0.11** 1 0.27* 0.71 0.43 1 1.01 1 1.01 1 1.21 0.90* 1 1.77* 1 0.85 1 1.90* 1 1 0.25*** 1 0.38** 0.23*** 1 5.72*** 0.59-1.16 0.72-1.37 0.60-1.33 0.75-0.92 0.08-0.61 0.95-1.71 0.20-0.80 0.03-0.32 1.29-6.98 1 0.10-0.70 0.27* 0.31-1. 60 0.43* 0.15-1.22 0.20** Wong et al. BMC Public Health 2011, 11:618 http://www.biomedcentral.com/1471-2458/11/618 Table 3 Individual, behavioural, psycho-social, and environmental correlates of active school transports in elementary school students To school Unadjusted OR 95% CI Adjusted OR 95% CI From school Unadjusted OR 95% CI Adjusted OR 95% CI Page 6 of 12 0.65-1.38 0.59-1.23 0.59-1.36 0.78-0.96 0.53-1.79 0.10-1.09 0.25-0.81 0.19-0.85 2.05-11.42 0.10-0.98 0.27-1.85 0.12-1.28 0.74-1.38 0.77-1.33 0.88-1.66 0.82-0.99 1.06-2.97 0.12-0.50 0.60-1.19 1.19 0.77-1.84 1.11-3.24 1.23-3.92 1 0.95 1 0.85 1 0.90 0.86** 1 0.97 1 0.34 1 2.20* 1 1 0.45* 0.40* 1 0.31* 0.71 0.40 0.21-0.67 0.11-0.47 1 2.60-12.59 4.84*** 0.09-0.86 0.19-0.97 0.08-0.51 0.89-2.05 2.04*** 1.43-2.90 1.73** 1.11-2.69 *** p < 0.001;** p < 0.01;* p < 0.05 OR: odds ratio; CI: confidence interval. Only the unadjusted and adjusted ORs and CIs of variables are included in the final models reported in this table. school students with better perceived health were more likely to shift their travel mode to active (OR = 2.97; 95%CI: 1.00-8.81). Elementary school students whose parents did not know where they were in their free time were more likely to shift their travel mode from passive to active (OR = 1.87; 95%CI: 1.00-3.49). For both ele- mentary and secondary school students, there was no difference in the likelihood of mode shift between stu- dents who were physically active for five days per week or more and those who were active less than five days