Dr. Sadie Costello

Professor

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Biography

Sadie Costello is an occupational environmental epidemiologist at UC Berkeley School of Public Health. She studies a range of chronic disease outcomes, particularly heart disease, cancer, and the health effects of various particulate exposures from light metal manufacturing, metalworking fluids in automobile manufacturing, diesel exhaust, and silica exposure among miners. Her research primarily focuses on developing methods to address healthy worker survivor bias by utilizing large administrative datasets to answer causal research questions related to occupational exposures and their impact on health outcomes.

Research Interests

Exposure-Response Models Health Outcomes Occupational Exposures Healthy Worker Survivor Bias Chronic Disease Administrative Data

Requirements for University of California, Berkeley

Doctorate Program
Requirements
GPA Requirement
Required:3
GRE Subject
Overall Score
Required:500
Overall
Required:500
TOEFL
Total
Required:90
IELTS
Overall
Required:7
Prerequisites
Bachelor's degree or recognized equivalent Preparation comparable to undergraduate major at Berkeley in Mathematics or Applied Mathematics 2 full years lower-division work (Calculus, Linear Algebra, Differential Equations, Multivariable Calculus) 8 one-semester upper-division courses (Real Analysis, Complex Analysis, Abstract Algebra, Linear Algebra)
Application Checklist
  • Graduate Application
  • Statement of Purpose
  • Personal History Statement
  • Three Letters of Recommendation
  • Unofficial Transcripts
  • C.V./Resume
  • Course and Textbook List
Specialization Notes

The Mathematics Subject GRE is required for the Fall 2026 admissions cycle. General GRE is optional.