UMR U557 INSERM; U1125 INRA; Université Paris 13; Centre de Recherche en Nutrition Humaine IdF, Bobigny, France.
Eur J Clin Nutr. 2012 Mar;66(3):369-75. doi: 10.1038/ejcn.2011.173. Epub 2011 Oct 12.
BACKGROUND/OBJECTIVES: Lower-income subgroups consume fewer servings of fruit and vegetables (FVs) compared with their more advantaged counterparts. To overcome financial barriers, FV voucher delivery has been proposed.
SUBJECTS/METHODS: In a 12-month trial, 302 low-income adults 18-60 years old (defined by evaluation of deprivation and inequalities in health examination centers, a specific deprivation score) were randomized into two groups: dietary advice alone ('advice'), or dietary advice plus FV vouchers ('FV vouchers') (10-40 euros/month) exchangeable for fresh fruits and vegetables. Self-reported data were collected on FV consumption and socioeconomic status at baseline, 3, 9 and 12 months. Anthropometric and blood pressure measurements were conducted at these periods, as well as blood samples obtained for determination of vitamins. Descriptive analyses, multiple linear regression and logistic regression were performed to evaluate the impact of FV.
Between baseline and 3-month follow-up, mean FV consumption increased significantly in both the 'advice' (0.62±1.29 times/day, P=0.0004) and 'FV vouchers' groups (0.74±1.90, P=0.002), with no difference between groups. Subjects in the FV vouchers group had significantly decreased risk of low FV consumption (<1 time/day) compared with those in the advice group (P=0.008). No change was noted in vitamin levels (vitamin C and β-carotene). The high number of lost-to-follow-up cases did not permit analysis at 9 or 12 months.
In the low-income population, FV voucher delivery decreased the proportion of low FV consumers at 3 months. Longer-term studies are needed to assess their impact on nutritional status.
背景/目的：与条件更优越的群体相比，低收入亚组人群摄入的水果和蔬菜（FV）份数较少。为了克服经济障碍，提出了 FV 代金券配送方案。
受试者/方法：在一项为期 12 个月的试验中，302 名年龄在 18-60 岁的低收入成年人（通过评估贫困和健康检查中心的不平等、特定的贫困评分来定义）被随机分为两组：仅接受饮食建议（“建议”）或接受饮食建议加 FV 代金券（“FV 代金券”）（每月 10-40 欧元），可兑换新鲜水果和蔬菜。在基线、3、9 和 12 个月时收集 FV 消费和社会经济地位的自我报告数据。在此期间进行了人体测量和血压测量，并采集了血液样本以测定维生素。进行描述性分析、多元线性回归和逻辑回归以评估 FV 的影响。
在基线和 3 个月随访期间，“建议”组（0.62±1.29 次/天，P=0.0004）和“FV 代金券”组（0.74±1.90，P=0.002）的 FV 消费均值均显著增加，且两组之间无差异。与建议组相比，FV 代金券组的低 FV 消费（<1 次/天）的风险显著降低（P=0.008）。维生素水平（维生素 C 和β-胡萝卜素）没有变化。由于失访人数众多，无法在 9 或 12 个月时进行分析。
在低收入人群中，FV 代金券的发放在 3 个月时降低了低 FV 消费者的比例。需要进行更长时间的研究来评估它们对营养状况的影响。
