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首页> 外文期刊>Journal of applied statistics >Does the supplemental nutrition assistance program really increase obesity? The importance of accounting for misclassification errors
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Does the supplemental nutrition assistance program really increase obesity? The importance of accounting for misclassification errors

机译：补充营养援助计划真的会增加肥胖吗？会计错误分类错误的重要性

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摘要

The prevalence of obesity among US citizens has grown rapidly over the last few decades, especially among low-income individuals. This has led to questions about the effectiveness of nutritional assistance programs such as the Supplemental Nutrition Assistance Program (SNAP). Previous results on the effect of SNAP participation on obesity are mixed. These findings are however based on the assumption that participation status can be accurately observed, despite significant misclassification errors reported in the literature. Using propensity score matching, we conclude that there seems to be a positive effect of SNAP participation on obesity rates for female participants and no such effect for males, a result that is consistent with several previous studies. However, an extensive sensitivity analysis reveals that the positive effect for females is sensitive to misclassification errors and to the conditional independence assumption. Thus analogous findings should also be used with caution unless examined under the prism of classification errors and of other assumptions used for the identification of causal parameters.
机译：在过去的几十年中，肥胖症的患病率在美国公民中迅速增长，尤其是在低收入人群中。这引起了有关营养援助计划（例如补充营养援助计划（SNAP））有效性的质疑。 SNAP参与对肥胖影响的先前结果好坏参半。然而，这些发现基于这样的假设：尽管文献中报告了严重的错误分类错误，但仍可以准确观察到参与状态。使用倾向得分匹配，我们得出结论，SNAP参与似乎对女性参与者的肥胖率有积极影响，而对男性则没有这种影响，这一结果与先前的研究一致。但是，广泛的敏感性分析表明，对女性的积极影响对错误分类错误和条件独立性假设敏感。因此，类似的发现也应谨慎使用，除非在分类错误和用于确定因果参数的其他假设的检​​验下进行检查。

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