Dr. Chengbo Zeng is a quantitative researcher with expertise in quantitative analytic methods, intervention design and evaluation, and ecological research. His work focuses on the development, refinement, validation, and implementation of patient-reported outcome (PRO) measures (PROMs) in routine clinical care and research. In collaboration with colleagues, Dr. Zeng has developed and validated PROMs to evaluate unique concerns, symptoms, and outcomes for the general populations and patients with end-stage liver diseases and liver cancer. In addition, he has extensive experience working with electronic health records (EHR) to query demographic, PRO, and medical data. Leveraging EHR data, Dr. Zeng applies multilevel designs and advanced statistical methodologies to investigate the determinants of nonresponse in PRO data in routine cancer care at the patient, provider, and clinic levels, as part of his National Cancer Institute-funded project. He is committed to advancing healthcare equity through his research.