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Q- and A-learning Methods for Estimating Optimal Dynamic Treatment Regimes.


ABSTRACT: In clinical practice, physicians make a series of treatment decisions over the course of a patient's disease based on his/her baseline and evolving characteristics. A dynamic treatment regime is a set of sequential decision rules that operationalizes this process. Each rule corresponds to a decision point and dictates the next treatment action based on the accrued information. Using existing data, a key goal is estimating the optimal regime, that, if followed by the patient population, would yield the most favorable outcome on average. Q- and A-learning are two main approaches for this purpose. We provide a detailed account of these methods, study their performance, and illustrate them using data from a depression study.

SUBMITTER: Schulte PJ 

PROVIDER: S-EPMC4300556 | biostudies-literature | 2014 Nov

REPOSITORIES: biostudies-literature

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Q- and A-learning Methods for Estimating Optimal Dynamic Treatment Regimes.

Schulte Phillip J PJ   Tsiatis Anastasios A AA   Laber Eric B EB   Davidian Marie M  

Statistical science : a review journal of the Institute of Mathematical Statistics 20141101 4


In clinical practice, physicians make a series of treatment decisions over the course of a patient's disease based on his/her baseline and evolving characteristics. A dynamic treatment regime is a set of sequential decision rules that operationalizes this process. Each rule corresponds to a decision point and dictates the next treatment action based on the accrued information. Using existing data, a key goal is estimating the optimal regime, that, if followed by the patient population, would yie  ...[more]

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