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oliviawallenn/README.md

Hi, I'm Olivia

Epidemiologist & emerging HEOR/RWE analyst · MS Nutrition Epidemiology & Data Science, Tufts University (May 2026)

I build reproducible analytic pipelines and extract decision-ready insights from complex, multi-source real-world datasets — with a focus on aging cohorts, dietary epidemiology, and evidence synthesis.

Currently a Graduate Researcher at the Jean Mayer USDA Human Nutrition Research Center on Aging, where I manage concurrent data workflows across epidemiological studies on a cohort of 40,000+ participants.

What I work on

  • Longitudinal cohort analysis — aging, dietary intake, and clinical outcomes (NECS, HRS)
  • Real-world evidence & outcomes research — observational study design, multivariable regression, survival analysis
  • Evidence synthesis — systematic reviews and meta-analysis across RCTs and observational studies
  • ETL & data engineering — harmonizing messy, multi-source clinical and dietary datasets into analysis-ready form
  • Reproducible research — version-controlled pipelines from raw data ingestion through stakeholder-ready output

Tools & methods

Statistical programming: SAS (advanced) · R · Python · SQL · Stata
Methods: Cox PH & Kaplan-Meier survival analysis · GEE · multivariable regression · propensity scoring · meta-analysis · mixed-effects models
Data engineering: ETL pipeline design · multi-source harmonization · missing data assessment · QC protocols
Visualization & communication: ggplot2 · Tableau · Excel · translating RWE findings for clinical and executive audiences

Featured projects

See pinned repositories below ↓

Project Data Methods
NECS Study Aging cohort GEE, regression, ETL
HRS Replication Health & Retirement Study Harmonization, replication
BRFSS Analysis CDC population survey Descriptive & inferential stats
Meta-Analysis 50+ RCTs and cross-over studies Data extraction, evidence synthesis

Background

🎓 MS, Nutrition Epidemiology & Data Science — Tufts University (May 2026)
🎓 BS, Public Health (Pre-Clinical) — UNC Wilmington, Magna Cum Laude
📍 Boston, MA · Open to RWE, HEOR, outcomes research, and research associate roles

Connect

LinkedIn · Email

Popular repositories Loading

  1. oliviawallenn oliviawallenn Public

  2. brfss-diabetes-time-series brfss-diabetes-time-series Public

    Stratified time-series analysis of U.S. diabetes prevalence by age, sex, and region using BRFSS 2013–2023 (SAS)

    SAS

  3. necs-carbohydrate-quality-physical-function necs-carbohydrate-quality-physical-function Public

    Longitudinal analysis of dietary carbohydrate quality and physical functioning in older adults using GEE models — New England Centenarian Study (SAS + R)

    R