Table 2.
Baseline and postintervention values, adjusted differences, and effect sizes for sedentary behavior outcomes.
| Outcome variable (all min/day unless otherwise specified) |
Baseline, mean (95% CI) | Post intervention, mean (95% CI) | Adjusted mean difference (95% CI)a |
Effect size (Cohen's d) |
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Control | Intervention | Control | Intervention |
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| Parent reported |
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Total screen timeb | 92.0 (68.1 to 115.9) | 109.7 (78.2 to 141.3) | 99.5 (69.2 to 129.8) | 79.2 (53.2 to 105.1) | −35.0 (−64.1 to −5.9) | 0.82 | |||||||||
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|
TV/DVD viewing | 77.5 (57.5 to 97.5) | 88.1 (54.9 to 121.2) | 78.0 (57.4 to 98.6) | 69.2 (43.1 to 95.2) | −15.0 (−34.3 to 4.3) | 0.61 | |||||||||
|
|
Computer/e-gamec use | 0.0 (0.0 to 0.0) | 0.6 (−0.6 to 1.7) | 0.0 (0.0 to 0.0) | 0.0 (0.0 to 0.0) | — | — | |||||||||
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|
Handheld e-game use | 0.0 (0.0 to 0.0) | 0.0 (0.0 to 0.0) | 0.0 (0.0 to 0.0) | 0.0 (0.0 to 0.0) | — | — | |||||||||
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Smartphone use | 4.8 (0.1 to 9.4) | 5.9 (1.3 to 10.4) | 5.8 (−1.0 to 12.5) | 3.5 (−0.5 to 7.6) | −1.9 (−7.2 to 3.4) | 0.38 | |||||||||
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Tablet use | 10.3 (0.02 to 20.5) | 15.0 (2.8 to 27.2) | 7.1 (−2.0 to 16.2) | 6.7 (1.5 to 11.9) | −8.2 (−23.0 to 6.6) | 0.21 | |||||||||
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Time restrained | 63.2 (39.6 to 86.9) | 74.7 (46.2 to 103.2) | 64.3 (49.7 to 78.8) | 57.5 (37.3 to 77.7) | −16.2 (−39.3 to 7.0) | 0.48 | |||||||||
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Time sitting | 127.3 (82.5 to 172.0) | 126.7 (97.8 to 155.5) | 118.5 (83.3 to 153.7) | 106.1 (75.2 to 137.0) | −13.5 (−63.4 to 36.4) | 0.15 | |||||||||
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Days/weekdays child has <1 hour screen time | 3.5 (2.4-4.6) | 3.6 (2.3 to 4.9) | 3.6 (2.6 to 4.6) | 3.4 (2.2 to 4.7) | −0.1 (−1.7 to 1.4) | 0.11 | |||||||||
| activPAL |
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Sitting time | 265.8 (212.4-319.2) | 281.7 (223.6 to 339.9) | 262.1 (209.6 to 314.6) | 256.0 (205.6 to 306.3) | −22.3 (−80.8 to 36.3) | 0.26 | |||||||||
aAdjusted for child sex, child age, and clustering by playgroup.
bSum of individual screen behaviors.
ce-game: electronic game.