- < Back to Principal Associates & Scientists

William Rhodes, Ph.D.

Principal Scientist, Health & Environment

William Rhodes, Ph.D. William Rhodes, Ph.D.
William Rhodes is an econometrician who has over 25 years of experience at Abt Associates. He specializes in program evaluation and statistical analysis.

As an econometrician and program evaluator, he works across Abt's U.S. Health Policy Practice, the Public Health Practice, and the Behavioral Health Practice areas. Rhodes, an expert in random design experiments, is conducting a pairwise cluster random design experiment of a nursing home intervention for the Agency for Health Research and Quality (AHRQ).

He has published overviews of quasi-experimental approaches to evaluation and evaluation studies using instrumental variables, difference-in-differences, regression discontinuity design, and propensity score matching. His paper on meta-analysis has been one of the most frequently downloaded articles from Evaluation Review for the past two years. In addition, Rhodes designed the sampling design and analysis plan for the Arrestee Drug Abuse Monitoring survey, a probability sampling intended to capture and interview hard-to-reach populations.

As a principal scientist, Rhodes performs several corporate assignments. He is co-chair of Abt’s Journal Authors Support Group, which awards stipends to Abt researchers to write papers and then guides them through the writing and dissemination process. He is a member of Abt Associates Quality Assurance Council, charged with developing procedures for assuring the high quality of Abt products. A former Abt Associates Fellow, he has been a reviewer for Abt’s prizes for best scientific research, best paper published during the year, and research with outstanding social impact. He is an associate editor for two journals and frequently reviews for journals with quantitative orientations including Statistics in Medicine and the Journal of the American Statistical Association.

Prior to joining Abt, Rhodes was director of research at the U.S. Sentencing Commission, senior economist at the Institute for Law and Social Research, and assistant professor in the School of Criminology at Florida State University. 

Rhodes holds a Ph.D. in economics from the University of Minnesota and his Bachelor of Arts degree from Bowdoin College.
Switch to single-page view (no tabs)


  • Mathematical modeling
  • Statistical analysis
  • Evaluation design (including survey design and management)
  • Disaster planning
  • Criminal justice/domestic violence
  • Illegal drug use/trafficking
  • Policy assessment/ analysis

Key Projects

  • Office of Probation and Pretrial Services (OPPS) -  AOUSC
  • National Corrections Reporting Program (NCRP) – BJS
  • Federal Justice Statistics Program (FJSP) – BJS
  • Falls in nursing homes - AHRQ


  • Abt Fellow
  • Daniel Bell Award for Social Science Research
  • Abt Associates Award for Best Paper

Selected Publications

  • With Gaes, G.; Kling, R.; Luallen, J.; Rich, T.; Shivly, M.  (2014)  Following Incarceration, Most Released Offenders Never Return to Prison.  Crime & Delinquency.
  • Rhodes, W.  (2014)  Pairwise Cluster Randomization: An Exposition.  Evaluation Review.
  • With Jalbert, S. (2014) Regression Discontinuity Design: An Introduction and Illustration.  Evaluation Review.
  • Rhodes, W. (2012) Meta-Analysis: An Introduction using Regression Models.  Evaluation Review. Vol. 36 (1): 24-71.
  • With Jalbert, S. (2012) Reducing Caseloads Improve Probation Outcomes, Journal of Crime and Justice.
  • Rhodes, W. (2011) Predicting Criminal Recidivism: A Research Note. Journal of Experimental Criminology.