| Outcomes |  | Mean difference (follow-up - baseline) | Time | Time * Condition | |||
---|---|---|---|---|---|---|---|---|
β (SE) | 95 % CI | β (SE) | 95 % CI | p-value | ||||
BOYSa | ||||||||
Accelerometer | SB weekday | I | +0.29 % | −0.29 (0.46) | −1.19 to 0.60 | 0.32 (0.78) | −1.21 to 1.85 | 0.68 |
 |  | C | +0.03 % | |||||
 | SB weekend day | I | −0.50 % | −0.50 (0.71) | −1.88 to 0.89 | -0.64 (1.21) | −3.00 to 1.73 | 0.60 |
 |  | C | −1.13 % | |||||
 | Total SB | I | −0.23 % | −0.06 (0.60) | −1.22 to 1.11 | -0.17 (0.74) | −1.61 to 1.27 | 0.82 |
 |  | C | −0.06 % | |||||
 | SB school hours | I | −1.26 % | −0.85 (0.74) | −2.31 to 0.61 | -0.41 (0.92) | −2.20 to 1.39 | 0.66 |
 |  | C | −0.85 % | |||||
 | SB after school hours | I | −0.34 % | −2.90 (1.10)** | −5.05 to -0.75 | 2.56 (1.53) | −0.09 to 5.21 | 0.06 |
 |  | C | −2.90 % | |||||
Questionnaire | TV week | I | −0.22 min/day | 1.31 (2.16) | −2.92 to 5.55 | −1.53 (2.83) | −7.92 to 4.86 | 0.59 |
 |  | C | +1.31 min/day | |||||
 | TV weekend | I | +0.29 min/day | −0.10 (3.44) | −6.85 to 6.64 | 0.39 (4.50) | −8.43 to 9.22 | 0.93 |
 |  | C | −0.10 min/day | |||||
 | PC week | I | +4.24 min/day | 6.96 (1.30)*** | 4.42 to 9.51 | −2.72 (1.70) | −7.76 to 2.32 | 0.11 |
 |  | C | +6.96 min/day | |||||
 | PC weekend | I | +8.26 min/day | 13.69 (2.15)*** | 9.48 to 17.90 | −5.42 (2.82) | −10.94 to 0.10 | 0.05 |
 |  | C | +13.69 min/day | |||||
 | Quiet play week | I | −1.92 min/day | −4.87 (2.81) | −10.37 to 0.64 | 2.95 (3.68) | −4.26 to 10.15 | 0.42 |
 |  | C | −4.87 min/day | |||||
 | Quiet play weekend | I | −5.24 min/day | −10.31 (6.85) | −23.72 to 3.11 | 5.07 (8.95) | −12.48 to 22.61 | 0.57 |
 |  | C | −10.31 min/day | |||||
GIRLSb | ||||||||
Accelerometer | SB weekday | I | −0.42 % | 1.98 (1.12) | −0.22 to 4.19 | −2.41 (1.42) | −5.20 to 0.38 | 0.09 |
 |  | C | +1.98 % | |||||
 | SB weekend day | I | −1.32 % | −1.10 (1.16) | −3.37 to 1.17 | -0.21 (1.47) | −3.08 to 2.66 | 0.89 |
 |  | C | −1.10 % | |||||
 | Total SB | I | −0.66 % | 1.15 (0.98) | −0.77 to 3.08 | -1.81 (1.25) | −4.25 to 0.63 | 0.15 |
 |  | C | +1.15 % | |||||
 | SB school hours | I | −1.10 % | 0.56 (0.81) | −1.03 to 2.15 | -1.66 (1.03) | −3.68 to 0.36 | 0.11 |
 |  | C | +0.56 % | |||||
 | SB after school hours | I | −1.74 % | 0.30 (1.09) | −1.84 to 2.43 | -2.03 (1.38) | −4.74 to 0.67 | 0.14 |
 |  | C | +0.30 % |  |  |  |  |  |
Questionnaire | TV week | I | +0.52 min/day | 0.06 (2.30) | −4.45 to 4.56 | 0.47 (3.00) | −5.41 to 6.34 | 0.88 |
 |  | C | +0.06 min/day | |||||
 | TV weekend | I | −5.83 min/day | 4.15 (3.81) | −3.32 to 11.62 | −9.98 (4.98)* | −19.74 to -0.23 | 0.04 |
 |  | C | +4.15 min/day | |||||
 | PC week | I | +5.40 min/day | 4.56 (1.64)** | 1.34 to 7.79 | 0.84 (2.15) | −3.37 to 5.05 | 0.70 |
 |  | C | +4.56 min/day | |||||
 | PC weekend | I | +7.97 min/day | 8.33 (2.08)*** | 4.26 to 12.39 | −0.36 (2.71) | −5.68 to 4.95 | 0.89 |
 |  | C | +8.33 min/day | |||||
 | Quiet play week | I | +0.28 min/day | −3.96 (3.80) | −11.41 to 3.49 | 4.24 (4.97) | −5.49 to 13.97 | 0.39 |
 |  | C | −3.96 min/day | |||||
 | Quiet play weekend | I | −13.59 min/day | −3.34 (5.97) | −15.04 to 8.37 | −10.25 (7.78) | −25.51 to 5.00 | 0.19 |
 |  | C | −3.34 min/day |