Louise Rohrbach, PhD, MPH

Professor of Clinical Population and Public Health Sciences


Health Equity Interests

I develop, evaluate, and disseminate interventions focused on promoting healthy behaviors and reducing risk for disease among adolescents.


Dr. Rohrbach is a Professor of Clinical Population and Public Health Sciences. For the past 35 years, she has conducted research on interventions to prevent adolescent risk behaviors, including substance use, tobacco use, unhealthy dietary and physical activity habits, and risky sexual behaviors.  She has published more than 125 papers on these topics.  She has been principal investigator on studies funded by NIH; Department of Health and Human Services; Substance Abuse and Mental Health Services Administration; Health Resources and Services Administration; California Tobacco-Related Disease Research Program, California Public Health Institute; American Cancer Society; and Los Angeles County Department of Public Health.  Recently, she completed an evaluation study of a multi-component teen pregnancy prevention intervention  in Los Angeles County known as “Keeping it Real Together" (2010-2020). 

Dr. Rohrbach has been a leader of education programs in the Department of Population and Public Health Sciences, directing the Master of Public Health program for 12 years (2010-2021) and the Health Behavior Research program for 9 years (2001-2009);   She has served on numerous committees related to public health and education in university, government, and community settings.  She is the recipient of the Translational Science Award from the Society for Prevention Research and the Excellence in Mentoring Award from USC.

Dr. Rohrbach received a B.A. in Psychology from Indiana University, M.P.H. in Community Health Sciences from UCLA, and Ph.D. in Health Behavior Research from USC.


Research Interests

  • Community
  • Risk Factors
  • Tobacco Control
  • Adolescents
  • Young Adults
  • Intervention
  • Interventions
  • Sexual and Reproductive Health
  • Community Health
  • Health Promotion
  • Disease Prevention
  • Behavior Change
  • Health Behavior
  • Primary Prevention
  • Dissemination Science
  • Implementation Science

Courses Taught

  • Directed Research
  • Internship for Curricular Practical Training
  • Directed Research
  • Internship for Curricular Practical Training
  • Program Design and Evaluation
  • Practice of Public Health
  • Foundations of Public Health