Causal inference methods for combining randomized trials and observational studies: a review

B Colnet, I Mayer, G Chen, A Dieng, R Li… - Statistical …, 2024 - projecteuclid.org
The supplementary material contains details on treatment effect estimation performed
separately on RCT data (Section A) and on observational data (Section B), derivations of the …

Synthesis estimators for transportability with positivity violations by a continuous covariate

PN Zivich, JK Edwards, BE Shook-Sa… - Journal of the Royal …, 2024 - academic.oup.com
Studies intended to estimate the effect of a treatment, like randomized trials, may not be
sampled from the desired target population. To correct for this discrepancy, estimates can be …

Introducing proximal causal inference for epidemiologists

PN Zivich, SR Cole, JK Edwards… - American Journal of …, 2023 - academic.oup.com
Causal inference with observational data has generally proceeded under the assumption of
conditional exchangeability. That is, the action (eg, treatment, exposure, intervention) is …

A Comprehensive Review and Tutorial on Confounding Adjustment Methods for Estimating Treatment Effects Using Observational Data

AX Shi, PN Zivich, H Chu - Applied Sciences, 2024 - mdpi.com
Controlling for confounding bias is crucial in causal inference. Causal inference using data
from observational studies (eg, electronic health records) or imperfectly randomized trials …

Transportability without positivity: a synthesis of statistical and simulation modeling

PN Zivich, JK Edwards, ET Lofgren, SR Cole… - …, 2024 - journals.lww.com
Studies designed to estimate the effect of an action in a randomized or observational setting
often do not represent a random sample of the desired target population. Instead, estimates …

Synthesis estimators for positivity violations with a continuous covariate

PN Zivich, JK Edwards, BE Shook-Sa… - arXiv preprint arXiv …, 2023 - arxiv.org
Research intended to estimate the effect of an action, like in randomized trials, often do not
have random samples of the intended target population. Instead, estimates can be …

Invited Commentary: Mixing multiple imputation and bootstrapping for variance estimation

CX Li, PN Zivich - American Journal of Epidemiology, 2024 - academic.oup.com
In 2023, Martinez et al. examined trends in the inclusion, conceptualization,
operationalization and analysis of race and ethnicity among studies published in US …

Empirical sandwich variance estimator for iterated conditional expectation g‐computation

PN Zivich, RK Ross, BE Shook‐Sa, SR Cole… - Statistics in …, 2024 - Wiley Online Library
Iterated conditional expectation (ICE) g‐computation is an estimation approach for
addressing time‐varying confounding for both longitudinal and time‐to‐event data. Unlike …

Fusing trial data for treatment comparisons: Single vs multi‐span bridging

BE Shook‐Sa, PN Zivich, SP Rosin… - Statistics in …, 2024 - Wiley Online Library
While randomized controlled trials (RCTs) are critical for establishing the efficacy of new
therapies, there are limitations regarding what comparisons can be made directly from trial …

Re:“Estimating the effect of a treatment when there is nonadherence in a trial”

PN Zivich - American Journal of Epidemiology, 2024 - academic.oup.com
I read with great interest the recent article by Richardson, Dukes, and Tchetgen Tchetgen
(RDTT hereafter) on their bespoke instrumental variable (BSIV) approach to estimate the …