Examination of the Synthetic Control Method for Evaluating Health Policies with Multiple Treated Units.
Examination of the Synthetic Control Method for Evaluating Health Policies with Multiple Treated Units.
复制标题
DOI：
10.1002/hec.3258
复制
发表时间：
2016-12
期刊：
影响因子：
2.1
通讯作者：
Sutton, Matt
中科院分区：
文献类型：
--
作者：
Kreif, Noemi;Grieve, Richard;Hangartner, Dominik;Turner, Alex James;Nikolova, Silviya;Sutton, Matt
本文在重新评估绩效工资(P4P)计划的背景下，将综合控制方法与常用的差值(DID)估计方法进行对比，以提高质量计划。综合控制方法旨在通过构建控制单元的加权组合来估计治疗效果，该控制单元代表了在没有接受治疗的情况下被治疗组所经历的情况。虽然DID估计假设未观察到的混杂因素的影响随着时间的推移是恒定的，但合成控制方法允许这些影响随着时间的推移而改变，方法是对对照组重新加权，使其具有与处理组相似的干预前特征。我们将综合控制方法扩展到有多个治疗单位的卫生政策评估环境中。我们重新分析了最近的一项研究，该研究评估了医院P4P计划对风险调整后的医院死亡率的影响。与最初的DID分析相反，合成对照方法报告说，对于激励条件，P4P方案并没有显著降低死亡率，而在非激励条件下，死亡率在统计上有显著增加。这一结果对不同规格的综合控制方法是稳健的。©2015作者。《卫生经济学》由John Wiley&Sons Ltd.出版。
This paper examines the synthetic control method in contrast to commonly used difference‐in‐differences (DiD) estimation, in the context of a re‐evaluation of a pay‐for‐performance (P4P) initiative, the Advancing Quality scheme. The synthetic control method aims to estimate treatment effects by constructing a weighted combination of control units, which represents what the treated group would have experienced in the absence of receiving the treatment. While DiD estimation assumes that the effects of unobserved confounders are constant over time, the synthetic control method allows for these effects to change over time, by re‐weighting the control group so that it has similar pre‐intervention characteristics to the treated group. We extend the synthetic control approach to a setting of evaluation of a health policy where there are multiple treated units. We re‐analyse a recent study evaluating the effects of a hospital P4P scheme on risk‐adjusted hospital mortality. In contrast to the original DiD analysis, the synthetic control method reports that, for the incentivised conditions, the P4P scheme did not significantly reduce mortality and that there is a statistically significant increase in mortality for non‐incentivised conditions. This result was robust to alternative specifications of the synthetic control method. © 2015 The Authors. Health Economics published by John Wiley & Sons Ltd.
登录
查看更多内容
影响因子：
4.4
作者：
Eijkenaar, Frank
通讯作者：
Eijkenaar, Frank
DOI：
10.1136/bmj.d3590
发表时间：
2011-06-28
期刊：
BMJ (Clinical research ed.)
影响因子：
--
作者：
Doran T;Kontopantelis E;Valderas JM;Campbell S;Roland M;Salisbury C;Reeves D
通讯作者：
Reeves D
影响因子：
4.2
作者：
Abadie, Alberto;Diamond, Alexis;Hainmueller, Jens
通讯作者：
Hainmueller, Jens
影响因子：
8
作者：
Billmeier, Andreas;Nannicini, Tommaso
通讯作者：
Nannicini, Tommaso
影响因子：
12.6
作者：
Dranove, David;Jin, Ginger Zhe
通讯作者：
Jin, Ginger Zhe