5 A Day fruit and vegetable intervention improves consumption in a low income population
5 A Day fruit and vegetable intervention improves consumption in a low income population
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DOI：
10.1016/s0002-8223(01)00052-9
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发表时间：
2001-02-01
影响因子：
--
通讯作者：
Schillo, BA
中科院分区：
文献类型：
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作者：
Anderson, JV;Bybee, DI;Schillo, BA
目的评估密歇根州某县农贸市场营养计划对水果和蔬菜消费行为的影响。研究对象/设置对象来自WIC和社区行动机构人群：564名低收入妇女完成前测；455名完成后测。被调查者被分配到4种干预措施之一：水果和蔬菜的使用、储存和营养价值的教育，农贸市场优惠券的发放，教育和优惠券，以及不干预。设计仅教育和优惠券和教育组随机分配；门诊预约时间确定分配给不干预组和仅优惠券组。主要观察指标干预前后的自填式问卷测量人们对水果蔬菜的消费和水果蔬菜摄入量的态度。统计分析包括双向多变量协方差分析、单变量协方差分析、Logistic回归和协方差结构建模。优惠券对增加水果和蔬菜消费行为有直接影响，但对态度没有影响。教育对态度有直接影响，而且似乎通过态度对消费行为产生影响。这项研究的应用表明，当优惠券等激励措施提高购买力时，低收入人群可能更有可能增加水果和蔬菜的消费行为。
Objective This study evaluated the Michigan Farmers' Market Nutrition Program in one Michigan county to determine its effect on fruit and vegetable consumption behavior.Subjects/Setting Subjects were selected from WIC and Community Action Agency populations: 564 low income women completed the pretest; 455 completed the posttest. Attrition rate was 19.3%.Intervention Subjects were assigned to one of 4 interventions: education about the use, storage and nutritional value of fruits and vegetables, distribution of farmers' market coupons, both education and coupons, or no intervention.Design Education-only and coupon and education groups were randomly assigned; clinic appointment timing determined assignment to no-intervention and coupon-only groups.Main Outcome Measures A self-administered questionnaire before and after intervention measured attitudes about fruit and vegetable consumption and intake of fruits and vegetables. WIC records documented redemption of coupons.Statistical Analyses Data analysis included 2-way multivariate analysis of covariance, univariate analysis of covariance, logistic regression, and covariance structure modeling.Results Both the education interventions and the coupon interventions had positive effects. Coupons had a direct effect on increasing fruit and vegetable consumption behavior but no effect on attitudes. Education had a direct effect on attitudes and seemed to exert an effect on consumption behavior through attitudes. The maximum impact of the intervention was achieved through a combination of education and coupons.Applications This study demonstrated that a low-income population may be more likely to increase its fruit and vegetable consumption behavior when incentives such as coupons improve affordability.