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A common assumption in causal inference from observational data is that there is no hidden confounding. Yet it is, in general, impossible to verify this assumption from a single dataset. Under the assumption of independent causal mechanisms…

统计方法学 · 统计学 2023-11-07 Rickard K. A. Karlsson , Jesse H. Krijthe

Machine learning practice is often impacted by confounders. Confounding can be particularly severe in remote digital health studies where the participants self-select to enter the study. While many different confounding adjustment…

应用统计 · 统计学 2019-11-14 Elias Chaibub Neto , Meghasyam Tummalacherla , Lara Mangravite , Larsson Omberg

Instrumental variables regression is a tool that is commonly used in the analysis of observational data. The instrumental variables are used to make causal inference about the effect of a certain exposure in the presence of unmeasured…

统计方法学 · 统计学 2023-09-07 Valentin Vancak , Arvid Sjölander

The No Unmeasured Confounding Assumption is widely used to identify causal effects in observational studies. Recent work on proximal inference has provided alternative identification results that succeed even in the presence of unobserved…

Measurement error arises through a variety of mechanisms. A rich literature exists on the bias introduced by covariate measurement error and on methods of analysis to address this bias. By comparison, less attention has been given to errors…

统计方法学 · 统计学 2018-11-27 Pamela Shaw , Jiwei He , Bryan Shepherd

Sensitivity analysis for measurement error can be applied in the absence of validation data by means of regression calibration and simulation-extrapolation. These have not been compared for this purpose. A simulation study was conducted…

应用统计 · 统计学 2021-06-09 Linda Nab , Rolf H. H. Groenwold

This paper develops a general causal inference method for treatment effects models with noisily measured confounders. The key feature is that a large set of noisy measurements are linked with the underlying latent confounders through an…

计量经济学 · 经济学 2021-10-14 Yingjie Feng

Causal inference is difficult in the presence of unobserved confounders. We introduce the instrumented common confounding (ICC) approach to (nonparametrically) identify causal effects with instruments, which are exogenous only conditional…

计量经济学 · 经济学 2022-09-20 Christian Tien

Bayesian causal inference offers a principled approach to policy evaluation of proposed interventions on mediators or time-varying exposures. We outline a general approach to the estimation of causal quantities for settings with…

统计方法学 · 统计学 2019-02-28 Leah Comment , Brent A. Coull , Corwin Zigler , Linda Valeri

Causal inference from observational data often assumes "ignorability," that all confounders are observed. This assumption is standard yet untestable. However, many scientific studies involve multiple causes, different variables whose…

机器学习 · 统计学 2019-04-16 Yixin Wang , David M. Blei

We define extrapolation as any type of statistical inference on a conditional function (e.g., a conditional expectation or conditional quantile) evaluated outside of the support of the conditioning variable. This type of extrapolation…

统计方法学 · 统计学 2024-06-13 Niklas Pfister , Peter Bühlmann

Observational studies of causal effects require adjustment for confounding factors. In the tabular setting, where these factors are well-defined, separate random variables, the effect of confounding is well understood. However, in public…

机器学习 · 计算机科学 2023-02-16 Connor T. Jerzak , Fredrik Johansson , Adel Daoud

Randomized Controlled Trials (RCTs) represent a gold standard when developing policy guidelines. However, RCTs are often narrow, and lack data on broader populations of interest. Causal effects in these populations are often estimated using…

机器学习 · 计算机科学 2023-03-07 Zeshan Hussain , Michael Oberst , Ming-Chieh Shih , David Sontag

Off-Policy Estimation (OPE) methods allow us to learn and evaluate decision-making policies from logged data. This makes them an attractive choice for the offline evaluation of recommender systems, and several recent works have reported…

机器学习 · 计算机科学 2023-09-11 Olivier Jeunen , Ben London

Sensitivity to unmeasured confounding is not typically a primary consideration in designing treated-control comparisons in observational studies. We introduce a framework allowing researchers to optimize robustness to omitted variable bias…

统计方法学 · 统计学 2024-07-19 Melody Huang , Dan Soriano , Samuel D. Pimentel

The presence of measurement error is a widespread issue which, when ignored, can render the results of an analysis unreliable. Numerous corrections for the effects of measurement error have been proposed and studied, often under the…

统计方法学 · 统计学 2023-06-29 Dylan Spicker , Michael Wallace , Grace Yi

Scientists have been interested in estimating causal peer effects to understand how people's behaviors are affected by their network peers. However, it is well known that identification and estimation of causal peer effects are challenging…

统计方法学 · 统计学 2021-09-07 Naoki Egami , Eric J. Tchetgen Tchetgen

Sensitivity analysis for the unconfoundedness assumption is crucial in observational studies. For this purpose, the marginal sensitivity model (MSM) gained popularity recently due to its good interpretability and mathematical properties.…

统计方法学 · 统计学 2024-02-27 Yao Zhang , Qingyuan Zhao

Causal inference from observational data is crucial for many disciplines such as medicine and economics. However, sharp bounds for causal effects under relaxations of the unconfoundedness assumption (causal sensitivity analysis) are subject…

机器学习 · 计算机科学 2023-10-17 Dennis Frauen , Valentyn Melnychuk , Stefan Feuerriegel

Marginal structural models are a popular tool for investigating the effects of time-varying treatments, but they require an assumption of no unobserved confounders between the treatment and outcome. With observational data, this assumption…

统计方法学 · 统计学 2021-06-10 Matthew Blackwell , Soichiro Yamauchi