I earned my Ph.D. in biostatistics from the University of Michigan in 1983, after which I came to the Department of Statistics at Carnegie Mellon University as a post-doctoral fellow. I have been a professor here since 1995, during which I also served as Associate Dean of the College of Humanities and Social Sciences for five years. I have served on data and safety monitoring boards and scientific advisory committees for a number of National Insitutes of Health and Veterans Administration studies; and have served on several National Academy of Sciences’ committees, including the Committee on National Statistics. I am a fellow of the American Statistical Association, the American Association for the Advancement of Science, and an elected member of the International Statistical Institute. My awards include CMU’s Ryan Teaching Award for Effectiveness in Teaching Undergraduate Students, and the College of Humanities and Social Sciences' E. Dunlop Smith Award for Distinguished Teaching and Educational Service.
My research interests include the development of statistical methods for the design and analysis of data from observational studies, clinical trials and for meta-analysis. Most recently I have been working on developing methods for combining information from different study designs.