PA-I (n=70) | PA+SB-I (n=61) | SB-I (n=69) | |||||||
---|---|---|---|---|---|---|---|---|---|
b (SE)/OR | 95% CI | b (SE)/OR | 95% CI | b (SE)/OR | 95% CI | ||||
Social support from teachers | B | 0.79a (0.34) | 0.13 to 1.45 | B | 1.27b (0.40) | 0.49 to 2.05 | b | 0.45 (0.33) | −0.20 to 1.11 |
Perceived availability of line markings | OR | 1.23 | 0.44 to 3.49 | OR | 0.81 | 0.29 to 2.26 | OR | 0.97 | 0.33 to 2.80 |
Perceived accessibility of sports equipment | OR | 1.09 | 0.05 to 24.8 | OR | 0.44 | 0.04 to 4.81 | OR | 0.16 | 0.02 to 1.23 |
Perceived school environment | B | 0.12 (0.07) | −0.01,0.25 | b | 0.10 (0.09) | −0.06 to 0.27 | b | −0.13 (0.15) | −0.43 to 0.17 |
Boys | B | −0.03 (0.13) | −0.29 to 0.23 | B | – | – | B | −0.92c (0.23) | −1.37 to -0.48 |
Girls | b | 0.27 (0.14) | −0.001 to 0.54 | b | – | – | b | 0.37 (0.20) | −0.03 to 0.77 |
b=represents the estimated difference in potential mediator's scores between a specific intervention group compared to the control group. OR=represents the proportional difference in odds of a positive perception on availability of line markings or accessibility of sports equipment between a specific intervention group and the control group.
All models adjusted for sex, maximum temperature at baseline and mid-intervention, baseline BMI and baseline value of the outcome variable and school cluster effect.
a: p=0.019; b: p=0.001; c: p=0.000.
PA-I, physical activity group; PA+SB-I, physical activity and sedentary behaviour combined group; SB-I, sedentary behaviour group.