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:摘要直接讨论观察性研究中的因果效应、未测量混杂和敏感性分析,贫困与健康结局提供了明确的因果推断分类依据。

反馈分类问题

Powerful Multivariate Sensitivity Analysis via Sample Splitting in an Observational Study of the Effects of Poverty on Cardiovascular Disease Risk Factors

通过样本分割增强多变量敏感性分析:贫困与心血管疾病风险因素

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
William Bekerman
Anurag Mehta
Rebecca E. Hasson
Leah E. Robinson
Dylan S. Small
Colin B. Fogarty

通过样本分割增强多变量敏感性分析:贫困与心血管疾病风险因素

研究问题
观察性研究同时检验多个结局时,如何选择对未测量偏差较稳健的结局线性组合,同时减少多重检验校正造成的功效损失?
方法与思路
作者把样本分为规划样本与分析样本,前者选择最优结局组合,后者开展推断,并刻画可达到全样本替代方法渐近功效的组合集合。
材料陈述的贡献
摘要称,该方法具有相应渐近功效保证且模拟中改善有限样本功效;贫困应用发现多个不利关联,其中烟草暴露较耐受未测量混杂。
阅读关注点
应核对敏感性模型、样本分割比例、组合优化准则和功效比较条件,并区分各结局发现对隐藏偏差的稳健程度。
阅读边界
这是 arXiv 预印本,同行评审与期刊接收均未核实;摘要未给出偏差阈值和效应大小,且明确其他结局仍对潜在偏差敏感。

原文摘要

When assessing the causal effect of an exposure on two or more outcomes in an observational study, a linear combination of outcomes may lessen the sensitivity of a test of the global null hypothesis to potential unmeasured biases. While all linear combinations of scored outcomes can be considered using Scheffe projections or constrained variants thereof, finding the combination that minimizes sensitivity to unmeasured biases requires corrections for multiple testing, which can erode power, especially when many outcomes are of interest. To mitigate this issue, we propose splitting the sample into a planning sample to identify an optimal linear combination and an analysis sample to conduct inference. We provide a novel characterization of the set of linear combinations for which this approach is guaranteed to achieve the same asymptotic power as full-sample alternatives and conduct extensive simulation studies that demonstrate enhanced power in finite samples. Finally, we apply our method to investigate the effects of poverty on the emergence of cardiovascular disease risk factors in children and adolescents. We discover adverse consequences on outcomes related to body composition, physical activity, and tobacco exposure. Although the impact of poverty on elevated tobacco exposure shows some robustness to unmeasured confounding, the other findings remain sensitive to potential biases.

笔记与分组