More robust estimation of average treatment effects using kernel optimal matching in an observational study of spine surgical interventions
More robust estimation of average treatment effects using kernel optimal matching in an observational study of spine surgical interventions
复制标题
在脊柱手术干预的观察研究中使用内核最佳匹配更稳健地估计平均治疗效果
DOI:
10.1002/sim.8904
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发表时间:
2021
影响因子:
2
通讯作者:
Santacatterina, Michele
中科院分区:
文献类型:
--
作者:
Kallus, Nathan;Pennicooke, Brenton;Santacatterina, Michele
Inverse probability of treatment weighting (IPTW), which has been used to estimate average treatment effects (ATE) using observational data, tenuously relies on the positivity assumption and the correct specification of the treatment assignment model, both of which are problematic assumptions in many observational studies. Various methods have been proposed to overcome these challenges, including truncation, covariate‐balancing propensity scores, and stable balancing weights. Motivated by an observational study in spine surgery, in which positivity is violated and the true treatment assignment model is unknown, we present the use of optimal balancing by kernel optimal matching (KOM) to estimate ATE. By uniformly controlling the conditional mean squared error of a weighted estimator over a class of models, KOM simultaneously mitigates issues of possible misspecification of the treatment assignment model and is able to handle practical violations of the positivity assumption, as shown in our simulation study. Using data from a clinical registry, we apply KOM to compare two spine surgical interventions and demonstrate how the result matches the conclusions of clinical trials that IPTW estimates spuriously refute.
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DOI:
--
发表时间:
2018
期刊:
Journal of Neurosurgery : Spine
影响因子:
--
作者:
M. Raad;C. Donaldson;Mostafa H. El Dafrawy;D. Sciubba;L. Riley;Brian J. Neuman;K. Kebaish;R. Skolasky
通讯作者:
R. Skolasky
影响因子:
2.5
作者:
Cook JA
通讯作者:
Cook JA
影响因子:
2.8
作者:
Resnick, Daniel K.;Watters, William C., III;Kaiser, Michael G.
通讯作者:
Kaiser, Michael G.
影响因子:
5
作者:
Cole, Stephen R.;Hernan, Miguel A.
通讯作者:
Hernan, Miguel A.
DOI:
--
发表时间:
2018
期刊:
Proceedings of the 21st International Conference on Artificial Intelligence and Statistics (AISTATS
影响因子:
--
作者:
Kallus, Nathan;Zhou, Angela
通讯作者:
Zhou, Angela