How much does the Supplemental Nutrition Assistance Program alleviate food insecurity? Evidence from recent programme leavers
How much does the Supplemental Nutrition Assistance Program alleviate food insecurity? Evidence from recent programme leavers
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DOI：
10.1017/s1368980011002709
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发表时间：
2012-05-01
影响因子：
3.2
通讯作者：
Nord, Mark
中科院分区：
文献类型：
--
作者：
Nord, Mark
目的：评估美国补充营养援助计划（SNAP）对粮食安全的影响（持续获得适足食物），扣除更多需要粮食的家庭自行选择加入方案的影响。在横截面调查数据中比较了当前SNAP接受者和最近离开者的粮食安全，使用多元逻辑回归方法调整经济和人口统计学差异。2年纵向面板的类似分析为基于前一年粮食安全状况的未观察变量的选择提供了额外的控制。设置：美国人口普查局为美国农业部收集的家庭调查数据。主题：2001年至2009年在当前人口调查粮食安全补充中采访的家庭。结果：在调查年度结束前继续使用SNAP的家庭中，粮食安全非常低的几率比在评估粮食安全的30天期间之前离开SNAP的家庭低28%。在控制前一年粮食不安全严重程度的2年小组中，比值差异为45%.Conclusions：结果与先前最强研究设计的估计一致，或略高于先前最强研究设计的估计，并表明SNAP对极低粮食安全的改善效果在20- 50%的范围内。
Objective: To estimate the effect of the US Supplemental Nutrition Assistance Program (SNAP) on the food security (consistent access to adequate food) of recipients, net of the effect of the self-selection of more food-needy households into the programme.Design: The food security of current SNAP recipients and recent leavers is compared in cross-sectional survey data, adjusting for economic and demographic differences using multivariate logistic regression methods. A similar analysis in 2-year longitudinal panels provides additional control for selection on unobserved variables based on food security status in the previous year.Setting: Household survey data collected for the US Department of Agriculture by the US Census Bureau.Subjects: Households interviewed in the Current Population Survey Food Security Supplements from 2001 to 2009.Results: The odds of very low food security among households that continued on SNAP through the end of a survey year were 28% lower than among those that left SNAP prior to the 30-d period during which food security was assessed. In 2-year panels with controls for the severity of food insecurity in the previous year, the difference in odds was 45%.Conclusions: The results are consistent with, or somewhat higher than, the estimates from the strongest previous research designs and suggest that the ameliorative effect of SNAP on very low food security is in the range of 20-50%.