Parental involvement and association with adolescents’ fruit and vegetable intake at follow-up: Process evaluation results from the multi-component school-based Boost intervention

Table 6 Association between level of parental involvement and students’ FV intake, multilevel linear regression analyses, n = 347

Stratifying variable	Level of parental involvement	Adjusted^a multilevel analysis
Stratifying variable	Level of parental involvement	Estimate (grams/day)	SE	p-value
	Low/no (reference)	0		0.02*
	Medium	47.5	33.7
	High	95.2	34.3
Gender
Girls	Low/no (reference)	0		0.03*
	Medium	14.6	55.2
	High	130.9	53.1
Boys	Low/no (reference)	0		0.03*
	Medium	101.3	43.2
	High	97.2	44.9
Family educational level
High	Low/no (reference)	0		0.97
	Medium	20.9	94.8
	High	5.0	94.8
Medium	Low/no (reference)	0		<0.01*
	Medium	126.1	51.7
	High	191.6	58.8
Low	Low/no (reference)	0		0.37
	Medium	−29.6	51.7
	High	50.8	51.8
Family structure
Live with two adults	Low/no (reference)	0		0.13
	Medium	33.5	37.3
	High	75.7	37.4
Live in single parent family	Low/no (reference)	0		<0.01*
	Medium	208.0	66.9
	High	390.8	73.0

^aAdjusted for baseline FV intake, family education level, family structure, mother’s country of birth and dose delivered of other intervention components
^*Significant associations (p ≤ 0.05)

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