Thomas R. Belin, Ph.D.


Core Scientist, Methods Core



B.S. Mathematics (1986) Stanford University, Palo Alto, California
M.A. Statistics (1987) Harvard University, Cambridge, Massachusetts
Ph.D. Statistics (1991) Harvard University , Cambridge , Massachusetts

Research and Interests:

Broadly speaking, my research interests focus on incomplete-data problems. Some of my efforts involve problems where data are incomplete due to nonresponse (e.g., subjects failing to answer survey questions) or due to design decisions (e.g., an investigator intentionally obtained measurements on some but not all subjects on a given variable). My work also includes studying models (hierarchical models, mixture models) where adopting a view that certain quantities are unobserved motivates asolution to an estimation problem, and ongoing work addresses incomplete data in longitudinal studies. I hold a joint appointment in the Department of Psychiatry and Biobehavioral Sciences in the UCLA School of Medicine,and in recent years, mental health research has been a major area of application. I have developed mixture-modeling methods for performing linkage of multivariate records, and this work served as motivation for a recent proposed methodology for DNA identification. I also have maintained an interest in methods for addressing the census undercount problem following on earlier work at the U.S. Census Bureau and in reporting of polling margins of error.


* Unutzer J, Simon G, Belin TR, Datt M, Katon W, Patrick D. Care for depression in HMO patients age 65 and older. J. of the American Geriatrics Society. 2000;48:871-878.

* Ganz PA, Greendale GA , Petersen L, Zibecchi L, Kahn B, Belin TR. Managing menopausal symptoms in breast cancer survivors: results of a randomized controlled trial. J of the National Cancer Institute. 2000;92:1054-1064.

* Rotheram-Borus MJ, Piacentini J, Cantwell C, Belin TR, Song J. The 18-month impact of an emergency room intervention for adolescent suicide attempters. Journal of Consulting and Clinical Psychology. 2000;68:1081-1093.

* Liu M, Taylor JMG, Belin TR. Multiple imputation and posterior simulation for multivariate missing data in longitudinal studies. Biometrics. 2000;56:1157-1163.

* Shetty V, Atchison K, Belin TR, Wang J. Clinician variability in characterizing mandible fractures (with discussion). Journal of Oral and Maxillofacial Surgery. 2001;59:254-262.

* Zaslavsky AM, Schenker N, Belin TR. Downweighting influential clusters in surveys: Application to the 1990 Post Enumeration Survey. Journal of the American Statistical Association. 2000;96:858-869.

* Belin TR. Can we improve upon an attempted headcount? Society. 2001;39:34-41.

* Cheng E, Myers L, Wolf S, Shatin D, Cui XP, Ellison G, Belin T, Vickrey B. Mobility impairments and use of preventive services in women with multiple sclerosis: observational study. British Medical Journal. 2001;323:968-969.

* Ganz PA, Desmond KA, Leedham B, Rowland JH, Meyerowitz BE, Belin TR. Quality of life in long-term, disease-free survivors of breast cancer: a follow-up study. Journal of the National Cancer Institute. 2002;94:39-49.

* Song J, Belin TR, Lee MB, Gao X, Rotheram-Borus MJ. Handling baseline differences and missing items in a longitudinal study of HIV risk among runaway youths. Health Services and Outcomes Research Methodology. 2001;2:317–329.