Ron D. Hays

Photo of Ron Hays
Affiliated Adjunct Researcher
Santa Monica Office


Ph.D. in psychology, University of California, Riverside


Ron Hays is an affiliated adjunct researcher at the RAND Corporation. His research focuses on patient-reported measures. Hays has published 619 peer-reviewed articles and 38 book chapters.  He is a 2015, 2016, 2017, 2018, 2019, 2020 and 2021 Thomson Reuters/Clarivate Analytics Highly Cited Researcher. Hays received his Ph.D. in psychology from the University of California, Riverside.

Concurrent Non-RAND Positions

Professor of Medicine, University of California, Los Angeles

Recent Projects

  • Consumer Assessment of Healthcare Providers and Systems (CAHPS)

Selected Publications

P. Fayers & R. Hays (eds.), Assessing Quality of Life in Clinical Trials: Methods and Practice, 2nd Edition, Oxford University Press, 2005

Hays, R. D., Chawla, N., Kent, E. E., & Arora, N. K., "Measurement Equivalence of the Consumer Assessment of Healthcare Providers and Systems (CAHPS®) Medicare Survey Items between Non-Hispanic Whites and Asians.," Quality of Life Research, 26, 2017

Hays, R.D., Spritzer, L.L., Thompson, w.W., and Cella, D., "U.S. general population estimate for," Journal of General Internal Medicine, 2015

Hays, R.D., Martina, S., Brown, J., Cui, M., Cleary, P., Gaillot, S., and Elliott, M., "Evaluation of a care coordination measure for the Consumer Assessment of Healthcare Providers and System (CAHPS(R)) Medicare Survey," Medical Care Research and Review, 71, 2014

Hays, R.D., Liu, H., and Kapteyn, A., "Use of internet panels to conduct surveys," Behavior Research Methods, 47(3), 2015

Palimaru, A., and Hays, R. D., "Associations of health-related quality of life with overall quality of life in the Patient-Reported Outcomes Measurement Information System (PROMIS®) Project," Applied Research in Quality of Life., 2017

Hays, R. D., Spritzer, K. L., Schalet, B., & Cella, D. , "PROMIS®-29 v2.0 Physical and Mental Health Summary Scores. ," Quality of Life Research, 2018

Hays, R. D., Spritzer, K. L., & Reise, S. P. , "Using item response theory to identify responders to treatment: Examples with the Patient-Reported Outcomes Measurement Information System (PROMIS) physical functioning and emotional distress scales. ," Psychometrika, 2021 (forthcoming)

Honors & Awards

  • President's Award (1993), RAND
  • Merit Bonus Award (2007), RAND
  • President’s Award (2009), International Society for Quality of Life Research


  • A patient and doctor talking and looking at a clipboard

    Putting Patients First Can Result in Better Care Overall

    Better patient care experiences are associated with higher levels of adherence to recommended prevention and treatment processes, better clinical outcomes, better patient safety within hospitals, and less health care utilization.

    Jul 28, 2014 The RAND Blog