Parent-directed intervention in promoting knowledge of pediatric nutrition and healthy lifestyle among low-SES families with toddlers: A randomized controlled trial.

Objective: The objective of this study is to determine the efficacy of an interactive, home visiting curriculum tailored to low socio-economic status families in improving parental knowledge of paediatric nutrition and healthy lifestyle.

Methods: Parents of toddlers aged 13-16 months living with a household income below 200% of the federal poverty line were randomized into healthy lifestyle intervention and control home visiting curriculum groups. Each curriculum consisted of 12 one-on-one educational sessions with parents facilitated by a trained home-visitor that were administered over a 6-month intervention period. Knowledge assessments were administered before and after the intervention period.

Results: Results of a one-way analysis of covariance (ANCOVA) analysis showed that parents in the intervention group (M = 26.05, SD = 4.24) scored significantly higher than control parents (M = 23.84, SD = 4.26) post-intervention, controlling for parent education level, F(1, 102) = 7.494 (95% confidence interval [-3.68, -0.59]). One-way ANCOVA analysis showed no significant mean difference between the parents in the intervention group (M = 24.13, SD = 4.37) and the control group (M = 23.93, SD = 4.16) at baseline, controlling for parent education level, F(1, 163) = 0.002 (95% confidence interval [-1.28, 1.22]).

Conclusions: An interactive healthy lifestyle intervention focused on low-SES families significantly improved parental knowledge of paediatric healthy lifestyle. Changes in parental knowledge is a key preliminary step in behaviour change to ultimately affect behaviour. Informing and encouraging parents of toddlers to guide healthy lifestyle development early remains a promising point of intervention for prevention, rather than remediation, of childhood obesity.