Stephanie Earnshaw is Senior Vice President of Health Economics at RTI Health Solutions (RTI‑HS). She received her PhD in Industrial Engineering at North Carolina State University and has been with RTI-HS for over 19 years. She has presented workshops, distance learning, and short courses on decision-analytic modeling techniques for pharmaceutical companies and organizations such as the International Society for Pharmacoeconomics and Outcomes Research (ISPOR), the Academy of Managed Care Pharmacy (AMCP), and the Centers for Disease Control and Prevention (CDC).  Dr. Earnshaw currently serves on the ISPOR Board of Directors, and she has held an Adjunct Faculty appointment at the University of North Carolina’s Eshelman School of Pharmacy, Division of Pharmaceutical Outcomes and Policy. She is also one of the lead authors of the newly published book Budget-Impact Analysis of Health Care Interventions: A Practical Guide.   Dr. Earnshaw’s research focus is in applying decision-analysis techniques to industry-related issues and health care problems. Her areas of specialization include mathematical programming (constrained optimization), network optimization, and Markov, simulation, and other state transition modeling. She has developed innovative mathematical models using these methods to determine pricing strategy, predict clinical outcomes, and allocate resources. In addition, she continues her support for the pharmaceutical, biotechnology, and diagnostic and medical device industry by developing budget-impact and cost-effectiveness models for their health technologies. Therapeutic areas include cardiovascular disease, gastrointestinal disorders, respiratory disease, transplantation, infectious disease, osteoporosis, vaccines, and oncology. She is a member of the International Society for Pharmacoeconomics and Outcomes Research and the Institute for Operations Research and the Management Sciences. She has presented her work at professional conferences and has published in several peer-reviewed journals.