Duane L. Steffey, Ph.D.

Dr. Steffey specializes in the application of statistical methods in projects involving product development, manufacturing process control, regulatory and safety issues. His research investigations have involved the development of statistical methods for meta-analysis, particularly through Bayesian hierarchical modeling, and the applications of statistics to problems in public policy. Dr. Steffey’s interdisciplinary work has covered such diverse areas as transportation, energy, the environment, public health, medicine, education, and national defense. His recent applied research has concerned the design and analysis of engineering and scientific experiments, sample surveys, and observational studies. Dr. Steffey has assisted clients in evaluating product performance using manufacturing data on process outcomes and field data on incidents and exposure.

As a tenured professor of statistics at San Diego State University, Dr. Steffey co-founded and co-directed the university’s statistical consulting center. He held a prior appointment at the National Research Council, where he directed studies for federal government clients on census methodology and the testing and evaluation of military systems. He was also previously employed in the risk assessment group at Westinghouse Electric Corporation, where he was engaged in conducting probabilistic safety studies for the commercial nuclear energy industry.

Villarraga ML, Cripton PA, Teti SD, Steffey DL, Krisnamuthy S, Albert T, Hilibrand A, Vaccaro A. Wear and corrosion evaluation in retrieved thoraco-lumbar internal fixation. Spine 2006; 31:2454–2462.

Steffey DL, Fienberg SE, Sturgess RH. Statistical assessment of damages in breach of contract litigation. Jurimetrics 2006; 46:129–138.

Moore TLA, Vijayakumar V, Steffey DL, Ramachandran K, Corrigan CF. Biomechanical factors and injury risk in high-severity rollovers. 49th Annual Proceedings of the Association for the Advancement of Automotive Medicine 2005; 133–150.

Dungan JL, Steffey DL. Measurement uncertainty in spectral indices from field spectroradiometers. Eos Trans. American Geophysical Union 2003; 84:46.

Supernak J, Kaschade C, Steffey D. Dynamic value pricing on I-15 in San Diego: Impact on travel time and its reliability. Transportation Research Record 2003; 1839:45–54.

Supernak J, Steffey D, Kaschade C. Dynamic value pricing as an instrument of better utilization of HOT lanes: The San Diego I-15 case. Transportation Research Record 2003; 1839:55–64.

Steffey D, Supernak J, Kaschade C. San Diego’s I-15 value pricing project: Impact on local businesses. Public Works Management and Policy 2003; 8:99–110.

Supernak J, Golob JM, Golob TF, Kaschade C, Kazimi C, Schreffler EN, Steffey D. San Diego’s I-15 congestion pricing: traffic-related issues. Transportation Research Record 2002; 1812:43–52.

Supernak J, Golob JM, Golob TF, Kaschade C, Kazimi C, Schreffler EN, Steffey D. San Diego’s I-15 congestion pricing: attitudinal, behavioral, and institutional issues. Transportation Research Record 2002; 1812:78–86.

Supernak J, Kaschade C, Steffey D. Factors affecting housing choices in San Diego: Impact of the I-15 congestion pricing project. 80th Annual Meeting, Transportation Research Board, Preprint, CD-ROM, 2001.

Anderson M, Daponte BO, Fienberg SE, Kadane JB, Spencer BD, Steffey DL. Sampling-based adjustment of the 2000 census—A balanced perspective. Jurimetrics 2000; 40:341–356.

Supernak J, Steffey D, Higgins TJ, Kaschade C, Kawada K. San Diego’s I-15 congestion pricing project: Impact on local businesses. 79th Annual Meeting, Transportation Research Board, Preprint, CD-ROM, 2000.

Supernak J, Kaschade C, Steffey D, Kawada K, Higgins TJ. San Diego’s I-15 congestion pricing project: Impact on local housing choices. 79th Annual Meeting, Transportation Research Board, Preprint, CD-ROM, 2000.

Lui K-J, Steffey D. A note on the application of simple linear regression methods for trend detection at multiple sites and visits. Statistics in Medicine 1993; 12:1125–1139.

Lui K-J, Steffey D, Pugh JK. Sample size determination for grouped exponential observations: A cost function approach. Biometrical Journal 1993; 35:677–688.

Huntley D, Nommensen R, Steffey D. The use of specific capacity to assess transmissivity in fractured-rock aquifers. Journal of Ground Water 1992; 30:396–402.

Steffey D. Hierarchical Bayesian Modeling with elicited prior information. Communications in statistics—Theory and methods 1992; 21:799–821.

Steffey D, Kass RE. Comment on Robinson, G.K., “That BLUP is a Good Thing—The Estimation of Random Effects. Statistical Science 1991; 6:45–47.

Kass RE, Steffey D. Approximate Bayesian inference in conditionally independent hierarchical models (Parametric Empirical Bayes Models). Journal of the American Statistical Association 1989; 84:717–726.

Modell J, Steffey D. Waging war and marriage: Military service and family formation, 1940–1950. Journal of Family History 1988; 13:195–218.

Books and Book Chapters

Iyer M, Zhao K, Steffey DL. Managing risks of consumer products. In: Encyclopedia of Quantitative Risk Assessment. Everitt B and Melnick E (eds), Wiley, Chichester, UK, in press.

Steffey DL. Homeland Security and transportation risk. In: Encyclopedia of Quantitative Risk Assessment. Everitt B and Melnick E (eds), Wiley, Chichester, UK, in press.

Steffey DL. Managing risks of construction defects. In: Encyclopedia of Quantitative Risk Assessment. Everitt B and Melnick E (eds), Wiley, Chichester, UK, in press.

DeVito P, Bryant L, Carswell CM, Donahue M, Fabrizio L, Gamache L, Herrmann D, Qualls A, Reckase M, Steffey D. NAEP reporting practices: Investigating District-Level and Market-Basket reporting. National Academy Press, Washington, DC, 2001.

Steffey DL, Samaniego FJ, Tran H. Hierarchical Bayesian inference in related reliability experiments. In: Recent Advances in Reliability Theory: Methodology, Practice, and Inference. Limnios N and Nikulin M (eds), Birkhauser, Boston, MA, 2000.

DeVito P, Bryant L, Carswell CM, Donahue M, Fabrizio L, Gamache L, Herrmann D, Qualls A, Reckase M, Steffey D. Designing a Market Basket for NAEP: Summary of a workshop. National Academy Press, Washington, DC, 2000.

DeVito P, Bryant L, Carswell CM, Donahue M, Fabrizio L, Gamache L, Herrmann D, Qualls A, Reckase M, Steffey D. Reporting district-level NAEP data: Summary of a workshop. National Academy Press, Washington, DC, 2000.

Cohen ML, Rolph JE, Steffey DL (eds). Statistics, testing, and defense acquisition: Background papers. National Academy Press, Washington, DC, 1999.

Cohen ML, Rolph JE, Steffey DL (eds). Statistics, testing, and defense acquisition: New approaches and methodological improvements. National Academy Press, Washington, DC, 1998.

Cohen ML, Rolph JE, Steffey DL (eds). Statistical methods for testing and evaluating defense systems. National Academy Press, Washington, DC, 1995.

Steffey DL, Bradburn NM (eds). Counting people in the information age. National Academy Press, Washington, DC, 1994.

Rolph JE, Steffey DL (eds). Statistical issues in defense analysis and testing: summary of a workshop. National Academy Press, Washington, DC, 1994.

Steffey DL, Bradburn NM (eds). A census that mirrors America. National Academy Press, Washington, DC, 1993.

Selected Presentations

Eiselstein LE, Steffey D, Corlett N, Nissan A. Toward an acceptance criterion for the corrosion resistance of medical devices: A statistical study of the pitting susceptibility of nitinol. International Conference on Shape Memory and Superelastic Technologies, Tsukuba, Japan, December 3–5, 2007.

Nissan A, Eiselstein LE, Steffey D, Corlett N. Effects of long-term immersion on the pitting corrosion resistance of nitinol. International Conference on Shape Memory and Superelastic Technologies, Tsukuba, Japan, December 3–5, 2007.

Steffey D. Overarching issues in risk analysis. Joint Statistical Meetings, Salt Lake City, UT, July 29–August 2, 2007.

Ostarello A, Steffey D. Estimating taint in a population of insurance claims. Joint Statistical Meetings, Salt Lake City, UT, July 29–August 2, 2007.

Zhao K, Steffey D. To recall or not to recall? Statistical Assessment of Consumer Product Failure Risk. Joint Statistical Meetings, Salt Lake City, UT, July 29–August 2, 2007.

Steffey D. Interesting times and opportunities for statisticians in academia, industry and government. Keynote Address, Statistical Careers Day, San Diego Chapter, American Statistical Association, San Diego, CA, May 5, 2007.

Steffey D. Sequential test designs for estimation of extreme quantiles. EURANDOM, Workshop on Mathematical Methodologies for Operational Risk, Eindhoven, The Netherlands, April 16–18, 2007.

Richards D, Carhart M, Raasch C, Pierce J, Ostarello A, Steffey D. Incidence of thoracic and lumbar injuries for restrained occupants in frontal collisions. Association for the Advancement of Automotive Medicine, 50th Annual Scientific Conference, Chicago, IL, October 15–18, 2006.

Gloeckner C, Moore TLA, Steffey D, Le-Resnick H, Corrigan CF. Implications of vehicle roll direction on occupant ejection and injury risk. Association for the Advancement of Automotive Medicine, 50th Annual Scientific Conference, Chicago, IL, October 15–18, 2006.

Steffey D, Bove R, Fisher J, Cicarelli L, Cargill R, Moore TLA. Characterization of occupant anthropometry and clearance measures in passenger cars. Joint Statistical Meetings, Seattle, WA, August 6–10, 2006.

Hood R, Steffey D. The role of statistical science in construction defect litigation. Defense Research Institute, 10th Annual Meeting, Chicago, IL, October 21, 2005.

Steffey D, Zhao K, Grossman H, Le-Resnick H. Vehicle rollover risk analysis: Metrics and methods. Joint Statistical Meetings, Minneapolis, MN, August 9, 2005.

Steffey DL, Fienberg SE, Sturgess RH. Statistical assessment of damages in breach of contract litigation. 6th International Conference on Forensic Statistics, Tempe, AZ, March 18, 2005.

Steffey D, Kelly C. Statistical consulting at SDSU: Meeting the needs of students and clients. 5th Annual Workshop on Statistical Consulting and Collaboration, Claremont, CA, November 15, 2003.

Singh S, Steffey D. Statistical modeling of individual trip frequency using household surveys of travel behavior. Joint Statistical Meetings, San Francisco, CA, August 4, 2003.

Shcherbak OV, Steffey D. Predictive modeling of bank portfolio data on home equity products. Joint Statistical Meetings, San Francisco, CA, August 3, 2003.

Steffey D. Hierarchical space-time models in environmental and ecological applications. 4th Annual Environmental Science Conference, CEA-CREST, Pasadena, CA, May 30–31, 2003.

Steffey D, Kazimi C, Supernak J, Kaschade C. assessing air quality along San Diego’s I-15 traffic corridor: Statistical methods for uncertainty analysis. Joint Statistical Meetings, New York, NY, August 15, 2002.

Steffey D. Design, measurement, and analysis of traffic studies: recent issues and reflections from the I-15 congestion pricing project. 80th Annual Meeting, Transportation Research Board, Washington, DC, January 10, 2001.

Steffey DL, Samaniego FJ, Tran H. Hierarchical Bayesian inference in related reliability experiments. 2nd International Conference on Mathematical Methods in Reliability, Bordeaux, France, July 6, 2000.

Steffey D. Statistics, testing, and defense acquisition. ITEA International Symposium, Albuquerque, NM, September 23, 1998.

Steffey D. Counting people in the information age. Council of Professional Associations on Federal Statistics, Washington, DC, December 1994.

• American Statistical Association
• Institute of Mathematical Statistics
• Society for Risk Analysis
• Editorial Board, CHANCE Magazine, 2006–present
• Program Chair, ASA Section on Risk Analysis, 2006–2007
• ASA Council of Chapters Governing Board: Vice-Chair, District 6, 2008-2010; Nominations Committee Member, 2001–2003
• President, San Diego Chapter, American Statistical Association, 1999–2003