Siyi Liu

College of Sciences

Works (4)

Updated: August 23rd, 2025 05:04

2025 article

Data fusion methods for the heterogeneity of treatment effect and confounding function

Yang, S., Liu, S., Zeng, D., & Wang, X. (2025, July 11). Bernoulli.

By: S. Yang n , S. Liu n, D. Zeng * & X. Wang *

author keywords: Estimating equation; goodness of fit; over-identification test; semiparametric efficiency; structural model
topics (OpenAlex): Statistical Methods and Inference; Advanced Causal Inference Techniques; Statistical Methods in Clinical Trials
Sources: Web Of Science, NC State University Libraries
Added: August 18, 2025

2024 journal article

Multiply robust estimators in longitudinal studies with missing data under control-based imputation

Biometrics, 80(1).

By: S. Liu n, S. Yang n , Y. Zhang * & G. Liu *

author keywords: longitudinal clinical trial; longitudinal observational study; semiparametric theory; sensitivity analysis
MeSH headings : Humans; Models, Statistical; Computer Simulation; Longitudinal Studies; Antidepressive Agents; Research Design
topics (OpenAlex): Advanced Causal Inference Techniques; Statistical Methods and Inference; Statistical Methods and Bayesian Inference
TL;DR: A novel estimator inspired by the efficient influence function is obtained, with multiple robustness in the sense that it achieves n1/2-consistency if any pairs of multiple nuisance functions are correctly specified, or if the nuisance functions converge at a rate not slower than n-1/4 when using flexible modeling approaches. (via Semantic Scholar)
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Sources: Web Of Science, NC State University Libraries, ORCID, Crossref
Added: March 11, 2024

2023 article

Robust analyzes for longitudinal clinical trials with missing and non-normal continuous outcomes

Liu, S., Zhang, Y., Golm, G. T., Liu, G., & Yang, S. (2023, September 26). Statistical Theory and Related Fields, Vol. 9.

By: S. Liu n, Y. Zhang *, G. Golm*, G. Liu * & S. Yang n 

author keywords: Longitudinal clinical trial; missing data; multiple imputation; robust regression; sensitivity analysis
topics (OpenAlex): Statistical Methods and Inference; Advanced Causal Inference Techniques; Statistical Methods in Clinical Trials
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3. Good Health and Well-being (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: October 10, 2023

2022 article

Sensitivity analyses in longitudinal clinical trials via distributional imputation

Liu, S., Yang, S., Zhang, Y., & Liu, G. (2022, November 6). Statistical Methods in Medical Research, Vol. 11.

By: S. Liu n, S. Yang n , Y. Zhang * & G. Liu *

author keywords: Longitudinal clinical trial; missing data; distributional imputation; multiple imputation; sensitivity analysis
MeSH headings : Models, Statistical; Computer Simulation; Antidepressive Agents / therapeutic use; Monte Carlo Method; Benzenesulfonates
topics (OpenAlex): Statistical Methods in Clinical Trials; Advanced Causal Inference Techniques; Statistical Methods and Inference
TL;DR: Distributional imputation is proposed in sensitivity analysis, which imputes each missing value by samples from its target imputation model given the observed data, and is fully efficient with theoretical guarantees. (via Semantic Scholar)
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Sources: Web Of Science, NC State University Libraries, ORCID
Added: November 21, 2022

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