跳到正文
← 返回论文列表与筛选
阅读说明

本页整理公开书目信息,不生成学术质量评分。AI 解读根据题名及所注明的摘要或原文片段生成,未完成全文核验,可能有误;具体假设、证明与结论请核对原文。摘要保留来源文本,未经模型改写。

DOI 首次登记不等于接收或发表日期。部分更正、评论等条目没有独立摘要;缺少可靠材料时保留待补状态。

本页为预印本版本;arXiv 收录、作者填写的期刊信息以及作者既有发表经历,都不单独证明本篇已接收。作者发表记录按 OpenAlex 身份与完整姓名、本站覆盖期刊 ISSN 及正式卷期核对,只展示已核实例,档案仍可能误合并。

引用量采用 OpenAlex 单条关联记录,不合计多个记录;关联记录可能包含正式发表版本,不等于此版本单独引用。缺失不视为零,引用指标不代表论文质量。

关注作者按书目中的完整姓名匹配,同名和姓名变体需人工辨别。相关论文先按共享细分方向和具体方法排列,再参考通用方法与发表日期。

分类依据与纠错

AI 根据所提供的论文材料归类:摘要直接研究随机对照试验中的总体处理效应指标及协变量调整估计。

反馈分类问题

Model-Assisted Bayesian Estimators of Transparent Population Level Summary Measures for Ordinal Outcomes in Randomized Controlled Trials

随机试验中有序结果透明总体汇总指标的模型辅助贝叶斯估计

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
Lindsey E. Turner
Thomas A. Murray

随机试验中有序结果透明总体汇总指标的模型辅助贝叶斯估计

研究问题
当随机试验的有序结果不满足比例优势假设时,如何定义清楚呈现各结果成分权重的总体处理效应汇总指标?
方法与思路
作者提出加权几何平均优势比与相对风险、加权平均风险差,结合非比例优势模型和贝叶斯自助法进行协变量调整与边际化。
材料陈述的贡献
摘要称所提权重具有结果排序反转等不变性,并通过模拟比较检验表现,以存在非比例优势迹象的 COVID-OUT 试验示范。
阅读关注点
应核对指标与权重的定义、排序不变性的条件,以及模型辅助估计在模型误设时的性质和贝叶斯边际化的实施方式。
阅读边界
这是 arXiv 预印本,同行评审及期刊接收未核实;摘要未说明先验、效率条件与具体比较数值,不能判断优势适用于哪些情形。

原文摘要

In randomized controlled trials, ordinal outcomes typically improve statistical efficiency over binary outcomes. The treatment effect on an ordinal outcome is usually described by the odds ratio from a proportional odds model, but this summary measure lacks transparency with respect to its emphasis on the components of the ordinal outcome when proportional odds is violated. We propose various summary measures for ordinal outcomes that are fully transparent in this regard, including 'weighted geometric mean' odds ratios and relative risks, and 'weighted mean' risk differences. We also develop and evaluate efficient model-assisted Bayesian estimators for these population level summary measures based on non-proportional odds models that facilitate covariate adjustment with marginalization via the Bayesian bootstrap. We propose a weighting scheme that engenders appealing invariance properties, including to whether the ordinal outcome is ordered from best to worst versus worst to best. Using computer simulation, we show that comparative testing based on the proposed population level summary measures performs well relative to the conventional proportional odds approach. We also report an analysis of the COVID-OUT trial, which exhibits evidence of non-proportional odds.

笔记与分组
相关领域论文