Efficacy of the Lunch is in the Bag intervention to increase parents’ packing of healthy bag lunches for young children: a cluster-randomized trial in early care and education centers

Table 7 Proportion of parent-packed lunches that presented healthy meal patterns

	Intervention Percent (Standard Error)	Control Percent (Standard Error)
Contained foods from all 5 of the My Plate food groups (Gold Medal)
Pre-Intervention Baseline	0.03 (0.02)	0.04 (0.02)
Post-Intervention 6-week follow-up	0.11 (0.02)*,****	0.01 (0.02)
Pre-Booster 22-week follow-up	0.07 (0.02),***	0.02 (0.02)
Post-Booster 28-week follow-up	0.07 (0.02)*	0.03 (0.02)
Contained no sweets or chips
Pre-Intervention Baseline	0.36 (0.4)	0.34 (0.04)
Post-Intervention 6-week follow-up	0.42 (0.04)*	0.35 (0.04)
Pre-Booster 22-week follow-up	0.41 (0.04)*	0.33 (0.04)
Post-Booster 28-week follow-up	0.38 (0.04)	0.36 (0.04)

*within-groups change baseline to follow-up P < .05, **P < .01, ***P < .001
****treatment-by-time interaction baseline to follow-up P < .05, *****P < .01, ******P < .001
Proportions and standard errors are based on mixed-effects models of the treatment-by-time interaction that adjusted for repeated measures within families and nesting of families within ECE centers. The models were based on data from 4712 lunches packed by parents for their preschool children. Each model compared the given measurement period to baseline. Proportion of Gold Medal lunches was based on occurrence of all five food groups irrespective of serving size

ISSN: 1479-5868