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分类依据与纠错

AI 根据所提供的论文材料归类:摘要研究序贯随机试验中的因果效应调节与最优干预规则;聚类设计本身不足以归入网络与干扰。

反馈分类问题

Q-Learning with Clustered-SMART (cSMART) Data: Examining Moderators in the Construction of Clustered Adaptive Interventions

聚类序贯多次随机试验的 Q 学习:自适应干预中的效应调节变量

正在核对关联版本…

代码、数据与补充材料

正在核对对应版本的资源…

关注这篇论文的作者
Yao Song
Kelly Speth
Amy Kilbourne
Andrew Quanbeck
Daniel Almirall
Lu Wang

聚类序贯多次随机试验的 Q 学习:自适应干预中的效应调节变量

研究问题
如何利用聚类序贯多次随机试验,判断候选变量能否用于制定最优聚类自适应干预,并在非正则情形下可靠推断?
方法与思路
作者提出聚类 Q 学习与 M-out-of-N 聚类自助法,构造效应调节参数置信区间,并在模拟与 ADEPT 数据中评估。
材料陈述的贡献
摘要称该方法在非正则情形下可获得接近名义覆盖率的区间,并考察聚类数量、组内相关与非正则程度的影响。
阅读关注点
应核对非正则性来源、自助抽样规模的选择及效应调节参数定义,以及聚类内依赖和多阶段随机化如何进入推断。
阅读边界
所给版本为 arXiv 预印本,同行评审或期刊接收未核实;摘要未说明完整理论条件、覆盖率数值及调参规则。

原文摘要

A clustered adaptive intervention (cAI) is a pre-specified sequence of decision rules that guides practitioners on how best - and based on which measures - to tailor cluster-level intervention to improve outcomes at the level of individuals within the clusters. A clustered sequential multiple assignment randomized trial (cSMART) is a type of trial that is used to inform the empirical development of a cAI. The most common type of secondary aim in a cSMART focuses on assessing causal effect moderation by candidate tailoring variables. We introduce a clustered Q-learning framework with the M-out-of-N Cluster Bootstrap using data from a cSMART to evaluate whether a set of candidate tailoring variables may be useful in defining an optimal cAI. This approach could construct confidence intervals (CI) with near-nominal coverage to assess parameters indexing the causal effect moderation function. Specifically, it allows reliable inferences concerning the utility of candidate tailoring variables in constructing a cAI that maximizes a mean end-of-study outcome even when "non-regularity", a well-known challenge exists. Simulations demonstrate the numerical performance of the proposed method across varying non-regularity conditions and investigate the impact of varying number of clusters and intra-cluster correlation coefficient on CI coverage. Methods are applied on ADEPT dataset to inform the construction of a clinic-level cAI for improving evidence-based practice in treating mood disorders.

笔记与分组