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Meta-analysis, Benefit Transfer, And Methodological Covariates: Implications For Transfer Error

机译：荟萃分析，收益转移和方法学协变量：转移误差的含义

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摘要

Meta-regression models in the valuation literature demonstrate that willingness to pay estimates vary according to methodological factors. Neither theory nor characteristics of policy sites dictate the treatment of associated covariates within benefit transfer, however, and the literature provides few insights into potential impacts of common empirical treatments. This paper introduces a method to systematically characterize the impact of methodological variables on transfer error. Using a repeated leave-one-out convergent validity framework, the analysis contrasts errors for a hypothetical ideal case in which correct methodological covariate treatments are known to the realistic case in which the correct treatment is unknown. Results indicate that the common assumption of mean values for methodological covariates leads to only a modest increase in mean transfer error relative to that found in the hypothetical ideal case.
机译：评估文献中的元回归模型表明，支付评估的意愿根据方法论因素而有所不同。政策场所的理论和特征均未决定利益转移内相关协变量的处理方式，但是，文献对常见经验处理的潜在影响几乎没有见解。本文介绍了一种系统地表征方法变量对转移误差影响的方法。使用重复的留一法收敛有效性框架，该分析将已知正确方法学协变量处理的假设理想情况与未知正确方法的现实情况的错误进行了对比。结果表明，与假设理想情况下相比，方法学协变量均值的一般假设只会导致平均传递误差仅适度增加。

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