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Population genetics seeks to quantify DNA variant associations with traits or diseases, as well as interactions among variants and with environmental factors. Computing millions of estimates in large cohorts in which small effect sizes are…

In situations with non-manipulable exposures, interventions can be targeted to shift the distribution of intermediate variables between exposure groups to define interventional disparity indirect effects. In this work, we present a…

统计方法学 · 统计学 2023-05-18 Helene C. W. Rytgaard , Amalie Lykkemark Møller , Thomas A. Gerds

In personalised decision making, evidence is required to determine whether an action (treatment) is suitable for an individual. Such evidence can be obtained by modelling treatment effect heterogeneity in subgroups. The existing…

统计方法学 · 统计学 2022-06-24 Jiuyong Li , Lin Liu , Shisheng Zhang , Saisai Ma , Thuc Duy Le , Jixue Liu

Causal inference analyses often use existing observational data, which in many cases has some clustering of individuals. In this paper we discuss propensity score weighting methods in a multilevel setting where within clusters individuals…

应用统计 · 统计学 2020-12-24 Youjin Lee , Trang Q. Nguyen , Elizabeth A. Stuart

We consider estimation of the target population average treatment effect (TATE) when outcome information is unavailable. Instead, we observe the outcome in multiple source populations and wish to combine the treatment effects therein to…

统计方法学 · 统计学 2025-05-16 Zehao Su , Helene Charlotte Rytgaard , Henrik Ravn , Frank Eriksson

The estimand framework provides guidance on handling intercurrent events, such as treatment discontinuation, in the analysis of clinical trial responses. Under ICH E9(R1), the treatment policy (TP) strategy incorporates post-discontinuation…

统计方法学 · 统计学 2026-04-07 Myeongjong Kang , Sangyoon Yi

Expectation-Maximization (EM) algorithm is a widely used iterative algorithm for computing (local) maximum likelihood estimate (MLE). It can be used in an extensive range of problems, including the clustering of data based on the Gaussian…

机器学习 · 统计学 2023-03-28 Pierre Houdouin , Esa Ollila , Frederic Pascal

We study estimation of and inference for the average causal effect of treating every member of a population, as opposed to none, using an experiment that treats only some. Considering settings where spillovers can occur between any pair of…

计量经济学 · 经济学 2026-01-29 Stefan Faridani , Paul Niehaus

The linear regression model is widely used in the biomedical and social sciences as well as in policy and business research to adjust for covariates and estimate the average effects of treatments. Behind every causal inference endeavor…

统计方法学 · 统计学 2024-04-23 Ambarish Chattopadhyay , Noah Greifer , Jose R. Zubizarreta

When drawing causal inferences about the effects of multiple treatments on clustered survival outcomes using observational data, we need to address implications of the multilevel data structure, multiple treatments, censoring and unmeasured…

统计方法学 · 统计学 2022-02-18 Liangyuan Hu , Jiayi Ji , Ronald D. Ennis , Joseph W. Hogan

Researchers are increasingly turning to machine learning (ML) algorithms to investigate causal heterogeneity in randomized experiments. Despite their promise, ML algorithms may fail to accurately ascertain heterogeneous treatment effects…

统计方法学 · 统计学 2024-04-23 Kosuke Imai , Michael Lingzhi Li

The increasing scientific attention given to precision medicine based on real-world data has led many recent studies to clarify the relationships between treatment effects and patient characteristics. However, this is challenging because of…

统计方法学 · 统计学 2022-06-20 Ke Wan , Kensuke Tanioka , Toshio Shimokawa

Target trial emulation (TTE) enables causal questions to be studied with observational data when randomized controlled trials (RCTs) are infeasible. Yet treatment-effect methods often address causal estimation, missingness, and temporal…

In this paper we present a data-adaptive estimation procedure for estimation of average treatment effects in a time-to-event setting based on generalized random forests. In these kinds of settings, the definition of causal effect parameters…

统计方法学 · 统计学 2021-04-28 Helene C. W. Rytgaard , Claus T. Ekstrøm , Lars V. Kessing , Thomas A. Gerds

This article explains the usage of R package CausalModels, which is publicly available on the Comprehensive R Archive Network. While packages are available for sufficiently estimating causal effects, there lacks a package that provides a…

统计方法学 · 统计学 2023-07-19 Joshua Wolff Anderson , Cyril Rakovski

Estimating heterogeneous treatment effects is critical in domains such as personalized medicine, resource allocation, and policy evaluation. A central challenge lies in identifying subpopulations that respond differently to interventions,…

机器学习 · 统计学 2025-09-18 Zilong Wang , Turgay Ayer , Shihao Yang

The primary objective of this scholarly work is to develop two estimation procedures - maximum likelihood estimator (MLE) and method of trimmed moments (MTM) - for the mean and variance of lognormal insurance payment severity data sets…

统计方法学 · 统计学 2024-02-22 Chudamani Poudyal

Comparative evaluation of multiple dynamic treatment policies is essential for healthcare and policy decisions, yet conventional longitudinal causal inference methods estimate each in isolation, preventing information sharing across…

机器学习 · 计算机科学 2026-05-28 Wenxin Chen , Weishen Pan , Kyra Gan , Fei Wang

Across a wide array of disciplines, many researchers use machine learning (ML) algorithms to identify a subgroup of individuals who are likely to benefit from a treatment the most (``exceptional responders'') or those who are harmed by it.…

统计方法学 · 统计学 2025-09-03 Michael Lingzhi Li , Kosuke Imai

Although deep learning models have driven state-of-the-art performance on a wide array of tasks, they are prone to spurious correlations that should not be learned as predictive clues. To mitigate this problem, we propose a causality-based…

机器学习 · 计算机科学 2021-10-27 Xinyi Wang , Wenhu Chen , Michael Saxon , William Yang Wang