statistical methods for categorical data analysis and epidemiologic studies, and he is active in extensive collaboration in design and analysis of biomedical and public health investigations. He is chair of the Statistics Section, American Public Health Association (APHA). He has previously served on the governing councils of APHA and the International Biometric Society and chaired the American Statistical Association’s Biometrics Section and Section on Teaching Statistics in the Health Sciences.

EMMETT B. KEELER is a senior mathematician at RAND in Santa Monica, California. He teaches policy analysis methods as a professor in the RAND Graduate School and an adjunct professor in the Public Health School, University of California, Los Angeles. His research has dealt with the theoretical and empirical effects of financing arrangements on health care utilization, quality, and outcomes. His current research deals with evaluating attempts to improve the quality of care and developing a business case for providing higher quality care.

KATHRYN B. LASKEY is an associate professor of systems engineering at George Mason University. She was previously a principal scientist at Decision Science Consortium, Inc. Her primary research interest is the study of decision, theoretically based knowledge representation, and inference strategies for automated reasoning under uncertainty. She has worked on methods for knowledge-based construction of problem-specific Bayesian belief networks, specifying Bayesian belief networks from a combination of expert knowledge and observations, and for recognizing when a system’s current problem model is inadequate. She has worked with domain experts to develop Bayesian belief network models for a variety of decision and inference support problem areas. She received a joint Ph.D. in statistics and public affairs from Carnegie Mellon University, an M.S. in mathematics from the University of Michigan, and a B.S. in mathematics from the University of Pittsburgh.

SUSAN R. McCUTCHEN has been on staff at The National Academies for over 20 years and worked in several Academy divisions and with many different boards, committees, and panels in those units. The studies in which she has participated have covered a broad range of subjects, including international affairs, technology transfer, aeronautics, natural disasters, education, needle exchange, and human factors. She has assisted in the production of a large number of Academy publications. A French major, with minors in English, Italian, and Spanish, her B.A. degree is from Ohio’s Miami University, and her M.A. degree from Kent State University.

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