Evaluation of a multiple ecological level child obesity prevention program: Switch®what you Do, View, and Chew

Table 2 Differences between experimental and control schools at immediate post-intervention

Variable	Experimental schools (mean standard error)	Control schools (mean standard error)	t(8)	Cohen's d
Screen time
Child report (hours/week)	32.5 (0.6)	31.2 (1.0)	.26	.69
Parent report (hours/week)	22.8 (0.7)	24.6 (0.3)	-2.15^a	1.26
Fruit and vegetable consumption
Child report (servings/day)	4.4 (0.2)	4.2 (0.1)	1.78^b	.52
Parent report (servings/week)	24.9 (0.7)	22.6 (0.4)	2.69^a	1.36
Physical activity
Pedometer (steps/day)	12,250 (260)	11,870 (232)	.91	1.83
Body mass index
Body mass index (kg/m²)	19.0 (0.02)	19.0 (0.03)	.05	.38

Analyses compare experimental and control school with hierarchical multilevel regressions, controlling for baseline levels.
^aDifferences between experimental and control schools significant at P < 0.05, one-tailed; ^bdifferences marginally significant at P < 0.06, one-tailed.

ISSN: 1741-7015