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  • Title: Association of State Laws Regarding Snacks in US Schools With Students' Consumption of Solid Fats and Added Sugars.
    Author: Turner L, Leider J, Piekarz-Porter E, Chriqui JF.
    Journal: JAMA Netw Open; 2020 Jan 03; 3(1):e1918436. PubMed ID: 31940035.
    Abstract:
    IMPORTANCE: The Smart Snacks in School standards (hereafter, Smart Snacks) were issued in 2013 with the aim of improving students' dietary intake behaviors. Goals of Smart Snacks included reducing total energy intake, consumption of solid fats and added sugars, and sodium intake. Smart Snacks standards were required to be implemented by the start of the 2014 to 2015 school year at all US schools participating in federal child nutrition programs. OBJECTIVE: To examine the association of state laws that specifically direct schools to implement Smart Snacks with student dietary consumption outcomes. DESIGN, SETTING, AND PARTICIPANTS: This cross-sectional study used nationally representative data collected in the 2014 to 2015 school year as part of the School Nutrition and Meal Cost Study. Students in grades 1 through 12 (ages approximately 6-18 years) were randomly selected from 310 public schools in 30 US states and the District of Columbia. Analytic weights were applied and all percentages reported are weighted. Analyses were conducted from March 1, 2018, to December 12, 2019. EXPOSURES: State laws requiring schools to implement Smart Snacks. MAIN OUTCOMES AND MEASURES: A 24-hour recall was used to assess student dietary intake as daily kilocalories consumed as (a) total energy, (b) solid fats and added sugars combined, (c) solid fats, or (d) added sugars. Milligrams of daily sodium consumption were also computed. RESULTS: Among 1959 students (mean [SD] age, 11.9 [3.5] years; 1014 [50.9%] boys), 420 students (22.5%) attended school in a state with Smart Snacks laws, and 528 students (26.1%) consumed snacks obtained at school. In covariate-adjusted models, total energy intake did not vary based on state law. Adjusted mean daily kilocalories from solid fats and added sugars was significantly lower among students in states with laws (508.7 [95% CI, 463.0 to 554.4] kcal) than among students in states without laws (562.5 [95% CI, 534.3 to 590.8] kcal; difference, -53.9 [95% CI, -104.5 to -3.2] kcal; P = .04). Consumption of sodium did not differ by state law. Kilocalories from solid fats contributed more to the difference than kilocalories from added sugars (-37.7 [95% CI -62.8 to -12.6] kcal vs -16.2 [95% CI, -51.3 to 19.0] kcal). CONCLUSIONS AND RELEVANCE: These findings suggest that students in states with laws requiring schools to implement Smart Snacks had better dietary intake than students in states without laws, consuming a mean of 53.9 fewer kilocalories from solid fats and added sugars per day, after adjusting for covariates. State-level policy mechanisms may support schools' implementation of federal standards in ways that are associated with healthier diets among children and adolescents.
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