Yizhen Xu

Yizhen Xu

Assistant Professor
Division of Biostatistics
Department of Population Health Sciences
University of Utah

Publications

* Corresponding author; # Equal contribution; bolded First author.

Methodological (Peer-reviewed)

  1. Yizhen Xu*, Tao Liu, Michael J Daniels, Rami Kantor, Ann Mwangi, Joseph W Hogan. Classification using Ensemble Learning under Weighted Misclassification Loss. Statistics in Medicine, 38(11), 2002-2012, 2019. (Student paper award, ASA Section on Risk Analysis, 2017) [paper]

  2. Yizhen Xu*, Joseph W. Hogan, Michael J. Daniels, Rami Kantor, Ann Mwangi. Augmentation Samplers for Multinomial Probit Bayesian Additive Regression Trees. Journal of Computational and Graphical Statistics, 1–19, 2024. https://doi.org/10.1080/10618600.2024.2388605. (Student paper award, Applied Statistics Symposium, 2020) [paper]

  3. Yizhen Xu*, Jisoo Kim, Ami Shah, Laura Hummers, Scott Zeger. Causal Inference using Multivariate Generalized Linear Mixed-Effects Models with Longitudinal Data: Studying the Effect of Mycophenolate on Scleroderma. Biometrics, Accepted, 2024. [paper].

To be Submitted / Submitted

  1. Yizhen Xu*, Joseph W. Hogan, Michael J. Daniels, Ann Mwangi, Tao Liu, Rami Kantor. Bayesian Framework for Predictive and Causal Modeling with Application to the HIV Care Cascade. In submission. [paper].

  2. Yizhen Xu, Zheyu Wang*. Probabilistic Clustering using Shared Latent Variable Model for Assessing Alzheimer’s Disease Biomarkers. Under review at the Biostatistics Journal. [paper].

  3. Yizhen Xu#, Numair Sani#, Amir Ghassami#*, Ilya Shpitser. Multiply Robust Causal Mediation Analysis with Continuous Treatments. In submission. [paper]

  4. Ji Soo Kim#, Yizhen Xu#*, Rachel Wallwork, Laura Hummers, Ami Shah, Scott Zeger. Probabilistic Clustering of Scleroderma Longitudinal Pulmonary Trajectories. Submitted to IEEE Journal of Biomedical and Health Informatics.

Work in progress

  1. Yizhen Xu, Zheyu Wang. Semi-supervised learning in biomarker assessment under shared latent variable model for the classification of preclinical Alzheimer’s disease.

  2. Bayesian Regression Tree for Compositional Outcomes.

Collaborative (Published or Submitted)

  1. Tao Liu*, Joseph W Hogan, Michael J Daniels, Mia Coetzer, Yizhen Xu, Gerald Bove, Allison K Delong, Lauren Ledingham, Millicent Orido, Lameck Diero, Rami Kantor (2017). Improved HIV-1 Viral Load Monitoring Capacity Using Pooled Testing With Marker-Assisted Deconvolution. Journal of Acquired Immune Deficiency Syndromes, 75(5), 580-587.

  2. Becky L. Genberg, Joseph W. Hogan, Yizhen Xu, Monicah Nyambura, Caren Tarus, Elyne Rotich, Catherine Kafu, Juddy Wachira, Suzanne Goodrich, Paula Braitstein* (2019). Population-based estimates of engagement in HIV care and mortality using double-sampling methods following home-based counseling and testing in western Kenya. PLOS ONE.

  3. Philip A Chan, Ewa King, Yizhen Xu, William Goedel, Leanne Lasher, Matt Vargas, Ken Brindamour, Richard Huard, Ailis Clyne, James McDonald, Utpala Bandy, David Yokum, Michelle L Rogers, Laura Chambers, Siena C Napoleon, Nicole Alexander-Scott, Joseph W Hogan* (2021). Seroprevalence of SARS-CoV-2 Antibodies in Rhode Island From a Statewide Random Sample. American Journal of Public Health, 111(4), 700-703.

  4. Mary G Bowring, Zitong Wang, Yizhen Xu, Joshua Betz, John Muschelli, Brian T Garibaldi, Scott L Zeger* (2021). Outcome-Stratified Analysis of Biomarker Trajectories for Patients Infected With Severe Acute Respiratory Syndrome Coronavirus 2. American Journal of Epidemiology, 190(10), 2094-2106.

  5. Stephanie M Delong*, Yizhen Xu, Paula Braitstein, Monicah Nyambura, Samson Ndege, Suzanne Goodrich, Caren Tarus, Joseph W Hogan, Becky L Genberg. Population-based estimates and predictors of child and adolescent linkage to HIV care or death in western Kenya. JAIDS, 2023.

  6. Tao Liu*, Joseph W Hogan, Wanning Su, Yizhen Xu, Michael J Daniels, Kantor Rami. Informed Pooled Testing with Quantitative Assays. Submitted. [paper]