My methodological work centers on marginal modeling approaches — particularly penalized GEE and QIF — for spatially correlated repeated-measures data with excess zeros. Substantively, I apply these methods to characterize the built food environment near schools and examine socioeconomic patterning of health-relevant exposures across geographic scales.
I have served as lead biostatistician on 5+ NIH-funded longitudinal health and RWE studies, managing large-scale relational datasets integrating EHR, geospatial, retail environment, and longitudinal cohort data. I apply causal inference methods (PSM, IPW, RDD, IV), latent class and transition models, Bayesian hierarchical models, and survival analysis — and develop R packages and R Shiny dashboards for non-technical stakeholders.
Current Position
Doctoral Research Fellow & Lead Biostatistician
Biostatistics for Social Impact Lab, Drexel University · 2022–Present
- Lead biostatistician on 5 NIH-funded RWE and longitudinal health studies; design SAPs, manage 3M+ record datasets, and deliver analytical insights to multidisciplinary teams
- Developing fusion learning–based penalized GEE framework for spatially correlated, zero-inflated count outcomes; lead simulation studies evaluating bias under complex data scenarios
- Apply causal inference (PSM, IPW, IV, RDD), latent class/transition models, Bayesian hierarchical models, and survival analysis; develop R packages and R Shiny dashboards
Research Interests
Technical Skills
Statistical Software
R (expert: packages, Shiny, ggplot2, plotly), SAS (proficient), Python (proficient), SQL, Stata, MPlus, WinBUGS; Git/GitHub
Data & Reproducibility
REDCap (administrator), relational databases, EHR/claims workflows, reproducible analytical pipelines (RAP), Quarto, LaTeX
Visualization & Reporting
ggplot2, plotly, Tableau, R Shiny dashboards; Statistical Analysis Plans (SAPs); publication-quality figures
Methods & Modeling
PSM, IPW, IV, RDD; latent class/transition models; Bayesian hierarchical modeling; synthetic data (Gaussian copula, GANs, VAEs); ICH E9/E9(R1)
NIH-Funded Projects
Additional collaborations: MESA Study (latent transition analysis, retail environment & HbA1c) · All of Us Research Program (school racial diversity; Hispanic adult obesity)