Control school* | Intervention school* | |||||||
N | Baseline | Follow-up | Mean difference (95% CI) | N | Baseline | Follow-up | Mean difference (95% CI) | |
Sedentary activity (min) | 74 | 217.0 (32.4) | 222.1 (36.2) | 5.1 (−1.3,11.5) | 96 | 236.4 (31.8) | 237.7 (40.6) | 1.3 (−6.2,8.7) |
Light activity (min) | 74 | 140.5 (26.0) | 136.6 (31.9) | −4.0 (−10.1,2.2) | 96 | 129.0 (26.8) | 124.8 (31.2) | −4.2 (−10.5,2.1) |
Moderate activity (min) | 74 | 16.2 (7.5) | 14.2 (7.8) | −2.0 (−3.2,–0.8) | 96 | 11.1 (6.3) | 10.1 (6.3) | −1.1 (−2.0,–0.1) |
Vigorous activity (min) | 74 | 5.5 (3.9) | 4.7 (3.5) | −0.8 (−1.4,–0.2) | 96 | 3.1 (3.0) | 3.0 (2.9) | −0.1 (−0.6,0.4) |
Time-on-task (% intervals on-task) | 28† | 73.7 | 56.6 | − | 27‡ | 79.1 | 77.5 | − |
Academic efficacy (score 1–5) | 98 | 3.41 (0.71) | 3.32 (0.71) | − | 107 | 3.76 (0.64) | 3.71 (0.76) | − |
Disruptive behaviour (score 1–5) | 98 | 2.34 (1.23) | 2.47 (1.19) | − | 107 | 1.94 (0.94) | 2.04 (1.01) | − |
CHU-9D (score 0.33–1.0) | 97 | 0.84 (0.10) | 0.84 (0.09) | − | 106 | 0.87 (0.09) | 0.85 (0.10) | − |
Positive affect (score 1–5) | 98 | 15.95 (3.33) | 16.08 (3.53) | − | 107 | 17.80 (3.10) | 17.54 (3.74) | − |
Negative affect (score 1–5) | 98 | 10.03 (3.30) | 9.87 (3.14) | − | 106 | 10.12 (3.47) | 9.95 (3.06) | − |
*Length of school day varies: control school=380 min, intervention school=400 min.
†Fourteen students observed at baseline across four classes (all non-active lessons) and 14 students observed at follow-up across four classes (all non-active lessons). Students observed at baseline were different from students observed at follow-up.
‡Fourteen students observed at baseline across four classes (all non-active lessons) and 13 students observed at follow-up across four classes (three active lessons, one non-active lesson). Students observed at baseline were different from students observed at follow-up.