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Food security and obesity represent two of the most significant public health issues. However, little is known about how these issues are intertwined. Here, we assess the causal relationship between food security during early childhood and relatively long-run measures of child health....
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Estimators of average treatment effects under unconfounded treatment assignment are known to become rather imprecise if there is limited overlap in the covariate distributions between the treatment groups. But such limited overlap can also have a detrimental effect on inference, and lead for...
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It is well known that efficient estimation of average treatment effects can be obtained by the method of inverse … estimation to achieve the efficiency. We formalize this argument and further identify the source of the efficiency loss arising … from parametric estimation of the propensity score. We also provide an intuition of why this overfitting is necessary. Our …
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This paper explores semi-monotonicity constraints in the distribution of potential outcomes, first, conditional on an instrument, and second, in terms of the response function. The imposed assumptions are strictly weaker than traditional instrumental variables assumptions and can be gainfully...
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