What Can We Learn about the Effects of Food Stamps on Obesity in the Presence of Misreporting?
What Can We Learn about the Effects of Food Stamps on Obesity in the Presence of Misreporting?
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DOI：
10.1093/ajae/aaw017
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发表时间：
2016-07-01
影响因子：
4.2
通讯作者：
Tchernis, Rusty
中科院分区：
文献类型：
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作者：
Almada, Lorenzo;McCarthy, Ian;Tchernis, Rusty
决策者越来越多地认为，食品券福利对成人肥胖率有积极影响。我们发现，这些结果在很大程度上取决于一个人的假设，报告的食品券参与的准确性。考虑到误报，我们没有发现任何证据表明补充营养援助计划的参与会显著增加成年人肥胖或超重的可能性。我们的研究结果还强调了固有的偏见和不一致的共同点估计时，忽略误报，与治疗效果从工具变量方法超过非参数上限超过200%，在某些情况下。
There is an increasing perception among policy makers that food stamp benefits contribute positively to adult obesity rates. We show that these results are heavily dependent on one's assumptions regarding the accuracy of reported food stamp participation. When allowing for misreporting, we find no evidence that Supplemental Nutrition Assistance Program participation significantly increases the probability of being obese or overweight among adults. Our results also highlight the inherent bias and inconsistency of common point estimates when ignoring misreporting, with treatment effects from instrumental variable methods exceeding the nonparametric upper bounds by over 200% in some cases.