Robert Stephens, PhD, MPH
Director of Statistics, Statistics and Evaluation Center
Robert Stephens, PhD, MPH is Director of Statistics in the Statistics and Evaluation Center at the American Cancer Society. He provides consultation on the design of experiments, quasi-experiments, and evaluations; the development of data collection instruments and scales; and the conduct of statistical analysis, with a particular emphasis on longitudinal data analysis. Dr. Stephens has considerable experience in modeling data from longitudinal studies using multiple regression, logistic regression, multilevel modeling, and latent variable modeling techniques, including structural equation modeling, latent class analysis, growth curve modeling, and growth mixture modeling.
A graduate of the University of Alabama with a Doctorate degree in Experimental Psychology, Dr. Stephens has nearly 30 years of experience as a research psychologist designing, implementing, and evaluating public health programs and conducting research studies in a variety of settings. Prior to joining the Society in 2016, Dr. Stephens worked for a public health consulting organization as a technical director overseeing design, analysis, and dissemination for large, federally-funded multi-site evaluations in a variety of settings. Prior to that, Dr. Stephens worked as a research psychologist for the Centers of Disease Control and Prevention in the Division of Reproductive Health, and for the Department of the Army at the U.S. Army Aeromedical Research Laboratory.