背景:学校食堂是影响青少年营养的推荐设置,因为它们可以改善学生的食物选择。在线午餐订购系统(“在线食堂”)被越来越多地使用,并代表了有吸引力的基础设施,以实施选择架构干预措施,推动用户选择更健康的食物。最近的一项整群随机对照试验证明了选择架构干预措施的短期有效性(2个月的随访),以增加高中生从网上食堂购买的食物的健康状况。然而,很少有证据表明,针对青少年食品购买的选择架构干预措施具有长期有效性,特别是那些在线交付。
目的:本研究旨在在15个月的随访中确定嵌入在高中在线食堂基础设施中的多策略选择架构干预的长期有效性。
方法:对新南威尔士州的1331名学生(来自9所高中)进行了一项整群随机对照试验,澳大利亚。学校被随机分配接受自动选择架构干预(包括菜单标签,定位,反馈,和提示策略)或控制(标准在线订购)。根据新南威尔士州健康食堂的策略,购买的食物被分类为“每天,\"\"偶尔,“或”不应出售。“主要结果是每天的平均比例,\"\"偶尔,“和”不应该出售每个学生购买的物品。次要结果是平均能量,饱和脂肪,糖,和购买的钠含量。使用在线食堂收集的常规数据评估结果。
结果:从基线到15个月的随访,平均而言,干预组的学生订购的“日常”项目明显更多(+11.5%,95%CI7.3%至15.6%;P<.001),和明显更少的“偶尔”(-5.4%,95%CI-9.4%至-1.5%;P=0.007)和“不应出售”项目(-6%,95%CI-9.1%至-2.9%;P<.001),相对于控制。随着时间的推移,平均能量没有组间差异,饱和脂肪,糖,或午餐订单的钠含量。
结论:鉴于其长期有效性,通过在线食堂提供的选择架构干预措施可能是政策制定者支持高中生健康饮食的一个有希望的选择。
背景:澳大利亚临床试验ACTRN12620001338954,https://anzctr.org。au/Trial/Registration/TrialReview.aspx?id=380546;开放科学框架osf.io/h8zfr,https://osf.io/h8zfr/.
BACKGROUND: School canteens are a recommended setting to influence adolescent nutrition due to their scope to improve student food choices. Online lunch ordering systems (\"online canteens\") are increasingly used and represent attractive infrastructure to implement choice architecture interventions that nudge users toward healthier food choices. A recent cluster randomized controlled trial demonstrated the short-term effectiveness (2-month follow-up) of a choice architecture intervention to increase the healthiness of foods purchased by high school students from online canteens. However, there is little evidence regarding the long-term effectiveness of choice architecture interventions targeting adolescent food purchases, particularly those delivered online.
OBJECTIVE: This study aimed to determine the long-term effectiveness of a multi-strategy choice architecture intervention embedded within online canteen infrastructure in high schools at a 15-month follow-up.
METHODS: A cluster randomized controlled trial was undertaken with 1331 students (from 9 high schools) in New South Wales, Australia. Schools were randomized to receive the automated choice architecture intervention (including menu labeling, positioning, feedback, and prompting strategies) or the control (standard online ordering). The foods purchased were classified according to the New South Wales Healthy Canteen strategy as either \"everyday,\" \"occasional,\" or \"should not be sold.\" Primary outcomes were the average proportion of \"everyday,\" \"occasional,\" and \"should not be sold\" items purchased per student. Secondary outcomes were the mean energy, saturated fat, sugar, and sodium content of purchases. Outcomes were assessed using routine data collected by the online canteen.
RESULTS: From baseline to 15-month follow-up, on average, students in the intervention group ordered significantly more \"everyday\" items (+11.5%, 95% CI 7.3% to 15.6%; P<.001), and significantly fewer \"occasional\" (-5.4%, 95% CI -9.4% to -1.5%; P=.007) and \"should not be sold\" items (-6%, 95% CI -9.1% to -2.9%; P<.001), relative to controls. There were no between-group differences over time in the mean energy, saturated fat, sugar, or sodium content of lunch orders.
CONCLUSIONS: Given their longer-term effectiveness, choice architecture interventions delivered via online canteens may represent a promising option for policy makers to support healthy eating among high school students.
BACKGROUND: Australian Clinical Trials ACTRN12620001338954, https://anzctr.org.au/Trial/Registration/TrialReview.aspx?id=380546 ; Open Science Framework osf.io/h8zfr, https://osf.io/h8zfr/.