Esther Lu, PhD

Graduate School

1993-1997, BS Computational Mathematics, NanKai University, Tianjin, P. R. China

1999-2001, MS Financial Mathematics, National University of Singapore, Singapore

2001-2007, PhD Biostatistics, Medical College of Wisconsin, Milwaukee, WI

Teaching Appointments

Master of Population Health Sciences (MPHS) degree program:
M19-550 Randomized Controlled Trials
M19-527 Development, Validation, and Application of Risk Prediction Models

Master of Science in Biostatistics (MSIBS) degree program:
M21-617 Study Design and Clinical Trials

Research Interests

Dr. Lu’s primary research interests include study design and data analysis in longitudinal studies and cluster randomized clinical trials (CRTs). Specifically, 1) Optimal designs of both longitudinal data and two-level/three-level CRTs using generalized estimating equation (GEE) models; 2) Relative efficiency of unequal versus equal cluster sizes in two-level CRTs using both GEE models and bias-corrected sandwich estimators; and 3) Sample size considerations in both three-level CRTs and stepped wedge designs using GEE models. Her research also includes propensity score methodology, survival data analysis, and prediction models. As a lead statistician during 2007-2009, she served on many projects including Phase I-IV clinical trials across different functional departments at the Pharmaceutical Product Development (PPD) Inc., which has ensured meeting the regulatory demands of FDA and submission deadlines of pharmaceutical companies. She is a member of the Institute of Clinical and Translational Sciences (ICTS) Research Design and Biostatistics Group (RDBG) and is currently providing statistical support for the projects of the Siteman Cancer Center (SCC). At the SCC, she served as the statistician in the areas of Gastrointestinal, Gynecology, Head and Neck, and Thoracic diseases. She has had highly productive collaborations with these research teams and published more than 120 manuscripts including as lead statistician on randomized clinical trials published in New England Journal of Medicine, Journal of the American Medical Association (2), and Journal of Clinical Oncology.

Research Profile

Selective Active Support Grants

Method

Cluster-randomized trials

1. Liu J, XiongC, LiuL, WangG, LuoJ, GaoF, ChenL, LiY. Relative efficiency of unequal versus equal cluster sizes in cluster-randomized trials using bias-corrected sandwich estimators. Journal of Biopharmaceutical Statistics 2020 Sep 24;1-16

• LiuJ, Colditz GA. Sample size calculation in three-level cluster randomized trials using generalized estimating equation models. Statistics in Medicine 2020, 39(24): 3347-3372

• LiuJ, LiuL, Colditz GA. Optimal designs in three-level cluster randomized trials with a binary outcome. Statistics in Medicine 2019; 38:3733-3746.

• Liu J, Colditz GA. Relative efficiency of unequal versus equal cluster sizes in cluster randomized trials using generalized estimating equation models. Biometrical Journal 2018, 60(3):616-38

Longitudinal studies

• Liu J, Colditz GA. Optimal design of longitudinal data analysis using generalized estimating equation models. Biometrical Journal 2017; 59(2):315-30. PMID: 27878852

Application

Randomized clinical trials

• Tuuli MG,  Liu J, Tita ATN, Longo S, Trudell A, Carter E, Shanks A, Woolfolk C,  Caughey AB,  Warren D, Odibo A, Colditz G,  Macones GA, Harper L. A Randomized Trial of Negative Pressure Wound Therapy at Cesarean delivery. Journal of the American Medical Association 2020; 324(12):1180-1189

• Cahill AG, Srinivas SK, Tita A, Caughey AB, Richter H, Gregory T, Liu J, Woolfork C, Weinstein D, Mathur A, Macones GA, Tuuli MG. Effect of immediate vs Delayed Pushing on Rates of Spontaneous Vaginal Delivery among Nulliparous Women Receiving Neuraxial Analgesia: A Multicenter Randomized Trial. Journal of the American Medical Association 2018 Oct 9; 320(14):1444-1454. PubMed PMID: 30304425

• Tuuli MG, Liu J,  Stout MJ, Martin S, Cahill AG, Odibo AO, Colditz GA, Macones GA. A randomized trial comparing skin antiseptic agents at cesarean delivery. New England Journal of Medicine 2016 Feb 18; 374 (7):647-55. PMID: 26844840.

• Rock CL, Flatt SW, Byers TE, Colditz GA, Demark-Wahnefried W, Ganz PA, Wolin KY, Elias A, Krontiras H, Liu J, Naughton M, Pakiz B, Parker BA, Sedjo RL, Wyatt H, for the Exercise and Nutrition to Enhance Recovery and Good Health for You (ENERGY) Trial Group. Results of the Exercise and Nutrition to Enhance Recovery and Good Health for You (ENERGY) Trial: A Behavioral Weight Loss Intervention in Overweight or Obese Breast Cancer Survivors. Journal of Clinical Oncology, 2015, 33(28):3169-76.

Implementation science

1. Salazar AS, Sekhon S, Rohatgi KW, Nuako A, Liu J, Harriss C, Brennan E, LaBeau D, Abdalla I, Schulze C, Muenks J, Overlot  D, Higgins JA, Jones LS, Swick C, Goings S, Badiu J, Walker J, Colditz GA, James AS. A Stepped-Wedge Randomized Trial Protocol of a Community Intervention for Increasing Lung Screening Through Engaging Primary Care Providers (I-STEP). (Contemporary Clinical Trials, In press)

Observational studies

1. Subramanian M, Liu J, Greenberg C, Schumacher J, Chang GJ, McMurry TL, Francescatti AB, Semenkovich TR, Hudson JL, Meyers BF, Puri V, Kozower BD. Imaging surveillance for surgically resected stage I non-small cell lung cancer: is more always better? Journal of Thoracic and Cardiovascular Surgery 2019, 157(3):1205-1217

1. Gay HA*, Liu J* (Co-first authors), Spencer CR, Lewis JS, Diaz J, Nussenbaum B,  Piccirillo JF, Ferraro DJ, Wildes TM, Sinha P, Adkins DR, Haughey BH, and Thorstad WL. Outcomes of p16 positive oropharyngeal squamous cell carcinoma treated with surgery and adjuvant IMRT. Journal of Radiation Oncology, 2015: 4(1): 37-46.

1. Crabtree TD, Puri V, Robinson C, Bradley J, Broderick S, Patterson A, Liu J, Musick J, Bell J, Chang M, Meyers BF. Analysis of first recurrence and survival in patients with stage I non-small cell lung cancer treated with surgical resection or stereotactic radiation therapy. Journal of Thoracic and Cardiovascular Surgery 2014; 147(4): 1183-92. PMCID: PMC4113038

1. Fernandez FG, Crabtree TD, Liu J, Meyers BF. Incremental Risk of Prior Coronary Arterial Stents for Pulmonary Resection. Annals of Thoracic Surgery 2013; 95(4): 1212-1220.

1. Carson KR, Bartlett NL, McDonald JR, Luo S, Zeringuie A, Liu J, Fu J, Chang S-H, Colditz GA. Increased Body Mass Index is associated with improved survival in United States veterans with diffuse large B-cell lymphoma. Journal of Clinical Oncology 2012; 30(26): 3217-3222.

List of Published Work (with PMCID):

https://www.ncbi.nlm.nih.gov/myncbi/1FuGBBUTo8d5l/bibliography/public/

esther@wustl.edu
(314) 362-0387