About Us


The Pennington Biomedical Evaluation Unit incorporates the skills and experiences of evaluation experts from a wide variety of disciplines. We bring together investigators from public health, social sciences, nutritional science, exercise science, biostatistics and epidemiology, and we work closely with experts in health services, technology, and management to help you build your capacity and apply best practices to your programs and organization.

Evaluation Unit Team Members

Stephanie Broyles, PhD


Read Bio

Dr. Broyles is an epidemiologist with nearly 20 years of experience in public health and evaluation, both locally and internationally.  She has worked extensively with partners to build capacity in the areas of program development and using evaluation data for program improvement.  She is particularly interested in evaluating environmental and policy changes to promote healthier behaviors.

Peter Katzmarzyk, PhD, FACSM, FAHA


Read Bio

Dr. Katzmarzyk is an epidemiologist of physical activity, obesity and health. He contributes over 2 decades of research on both children and adults to the translation of evidence-based and evidence-informed public health interventions.

Elizabeth Gollub, PhD, MPH, RD

Lead Evaluator

Read Bio

Dr. Gollub is a nutrition specialist who has been working in the areas of public and community health, aging and quality of life, outcomes research, and education since 1986. She brings an array of experience facilitating and assessing both conventional and innovative approaches to creating healthier lifestyles and populations.

Allison Tohme, MPH, CPH

Coordinator/Research Associate

Read Bio

Ms. Tohme has a background in health behavior, is certified in public health, and brings experience managing obesity prevention research projects. She contributes a strong set of organizational skills to the Evaluation Unit through planning workshops, facilitating communications, and developing evaluation plans and tools.

Nancy Breton, MPH

Evaluator/Research Specialist

Read Bio

Ms. Breton specializes in the utilization of data and research to support implementation of evidence-based policies and programs. She is experienced in the areas of health disparities, stakeholder engagement, health communication strategies, and measurements of behavioral change.

Evaluation Unit Affiliate Members:

Catherine Champagne, PhD, RDN

Read Bio

Dr. Champagne is a nutritional epidemiologist, working in the area of dietary assessment and nutrition counseling. She has over 30 years of experience as a registered dietitian and has worked in pediatric nutrition, primarily school based, and in adult nutrition interventions, primarily in the areas of weight management and chronic disease.

Amanda Staiano, PhD, MPP

Read Bio

Dr. Staiano is a developmental psychologist with an interest in the prevention and treatment of childhood obesity. Specifically, she’s interested in the role of technology to facilitate behavior change and increase physical activity. She works with clinicians in Baton Rouge and New Orleans to implement behavioral interventions to help families adopt healthy habits and achieve a healthy weight.