Robert E. Weiss, Ph.D.

Professor, Biostatistics

A Short Biography:

He received his PhD from the University of Minnesota, School of Statistics in 1989. After a postdoc in the UCLA School of Medicine, Department of Biomathematics, he joined the UCLA School of Public Health in the Department of Biostatistics. He became a full professor in 2002 and was honored as a Fellow of the American Statistical Association (ASA) in 2003. He was chair-elect of the Section on Bayesian Statistical Sciences of the ASA in 2011 and is chair in 2012 and will be past-chair in 2013.

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Department of Biostatistics
UCLA School of Public Health
Los Angeles, CA 90095

Office Address:

Department of Biostatistics
UCLA School of Public Health
650 Charles E. Young Drive South
Los Angeles, CA 90095


Hess Kristen L, Javanbakht Marjan, Brown Joelle M, Weiss Robert E, Hsu Paul, Gorbach Pamina M   Intimate partner violence and sexually transmitted infections among young adult women Sexually transmitted diseases, 2012; 39(5): 366-71.
Murphy Ryan D, Gorbach Pamina M, Weiss Robert E, Hucks-Ortiz Christopher, Shoptaw Steven J   Seroadaptation in a Sample of Very Poor Los Angeles Area Men Who Have Sex with Men AIDS and behavior, 2012; .
Jilaihawi Hasan, Chakravarty Tarun, Weiss Robert E, Fontana Gregory P, Forrester James, Makkar Raj R   Meta-analysis of complications in aortic valve replacement: Comparison of Medtronic-Corevalve, Edwards-Sapien and surgical aortic valve replacement in 8,536 patients Catheterization and cardiovascular interventions : official journal of the Society for Cardiac Angiography & Interventions, 2012; 39(5): .
Gorbach Pamina M, Weiss Robert E, Fuchs Edward, Jeffries Robin A, Hezerah Marjan, Brown Stephen, Voskanian Alen, Robbie Edward, Anton Peter, Cranston Ross D   The slippery slope: lubricant use and rectal sexually transmitted infections: a newly identified risk Sexually transmitted diseases, 2012; 39(1): 59-64.
Weiss Robert E, Jia Juan, Suchard Marc A   A Bayesian model for the common effects of multiple predictors on mixed outcomes Interface focus, 2011; 1(6): 886-94.
Long Jennifer K, Murphy Suzanne P, Weiss Robert E, Nyerere Susan, Bwibo Nimrod O, Neumann Charlotte G   Meat and milk intakes and toddler growth: a comparison feeding intervention of animal-source foods in rural Kenya Public health nutrition, 2011; 39(1): 1-8.
Ober Allison J, Iguchi Martin Y, Weiss Robert E, Gorbach Pamina M, Heimer Robert, Ouellet Lawrence J, Shoptaw Steven, Anglin M Douglas, Zule William A   The relative role of perceived partner risks in promoting condom use in a three-city sample of high-risk, low-income women AIDS and behavior, 2011; 15(7): 1347-58.
Huang David Y C, Evans Elizabeth, Hara Motoaki, Weiss Robert E, Hser Yih-Ing   Employment Trajectories: Exploring Gender Differences and Impacts of Drug Use Journal of vocational behavior, 2011; 79(1): 277-289.
Hsia Renee Y, Asch Steven M, Weiss Robert E, Zingmond David, Liang Li-Jung, Han Weijuan, McCreath Heather, Sun Benjamin C   Hospital determinants of emergency department left without being seen rates Annals of emergency medicine, 2011; 58(1): 24-32.e3.
Comulada W Scott, Weiss Robert E   Sample size and power calculations for correlations between bivariate longitudinal data Statistics in medicine, 2010; 29(27): 2811-24.
Chakravarty Tarun, White Anthony J, Buch Mamta, Naik Hursh, Doctor Niraj, Schapira Jay, Kar Saibal, Forrester James S, Weiss Robert E, Makkar Raj   Meta-analysis of incidence, clinical characteristics and implications of stent fracture The American journal of cardiology, 2010; 106(8): 1075-80.
Jyrala Aarne, Weiss Robert E, Jeffries Robin A, Kay Gregory L   Effect of mild renal dysfunction (s-crea 1.2-2.2 mg/dl) on presentation characteristics and short- and long-term outcomes of on-pump cardiac surgery patients Interactive cardiovascular and thoracic surgery, 2010; 10(5): 777-82.
Comulada W Scott, Rotheram-Borus Mary Jane, Pequegnat Willo, Weiss Robert E, Desmond Katherine A, Arnold Elizabeth Mayfield, Remien Robert H, Morin Stephen F, Weinhardt Lance S, Johnson Mallory O, Chesney Margaret A   Relationships over time between mental health symptoms and transmission risk among persons living with HIV Psychology of addictive behaviors : journal of the Society of Psychologists in Addictive Behaviors, 2010; 24(1): 109-18.
Weiss Robert E   Bayesian methods for data analysis American journal of ophthalmology, 2010; 149(2): 187-188.e1.
Liang Li-Jung, Weiss Robert E, Redelings Benjamin, Suchard Marc A   Improving phylogenetic analyses by incorporating additional information from genetic sequence databases Bioinformatics (Oxford, England), 2009; 25(19): 2530-6.
Naik Hursh, White Anthony J, Chakravarty Tarun, Forrester James, Fontana Gregory, Kar Saibal, Shah Prediman K, Weiss Robert E, Makkar Raj   A meta-analysis of 3,773 patients treated with percutaneous coronary intervention or surgery for unprotected left main coronary artery stenosis JACC. Cardiovascular interventions, 2009; 2(8): 739-47.
Gorbach Pamina M, Murphy Ryan, Weiss Robert E, Hucks-Ortiz Christopher, Shoptaw Steven   Bridging sexual boundaries: men who have sex with men and women in a street-based sample in Los Angeles Journal of urban health : bulletin of the New York Academy of Medicine, 2009; 86 Suppl 1(8): 63-76.
Shoptaw Steven, Weiss Robert E, Munjas Brett, Hucks-Ortiz Christopher, Young Sean D, Larkins Sherry, Victorianne Gregory D, Gorbach Pamina M   Homonegativity, substance use, sexual risk behaviors, and HIV status in poor and ethnic men who have sex with men in Los Angeles Journal of urban health : bulletin of the New York Academy of Medicine, 2009; 86 Suppl 1(8): 77-92.
Alber Susan A, Weiss Robert E   A model selection approach to analysis of variance and covariance Statistics in medicine, 2009; 28(13): 1821-40.
Jia Juan, Weiss Robert E   Common predictor effects for multivariate longitudinal data Statistics in medicine, 2009; 28(13): 1793-804.
Ober Allison, Shoptaw Steve, Wang Pin-Chieh, Gorbach Pamina, Weiss Robert E   Factors associated with event-level stimulant use during sex in a sample of older, low-income men who have sex with men in Los Angeles Drug and alcohol dependence, 2009; 102(1-3): 123-9.
Gewa Constance A, Weiss Robert E, Bwibo Nimrod O, Whaley Shannon, Sigman Marian, Murphy Suzanne P, Harrison Gail, Neumann Charlotte G   Dietary micronutrients are associated with higher cognitive function gains among primary school children in rural Kenya The British journal of nutrition, 2009; 101(9): 1378-87.
Micheletti Robert G, Fishbein Gregory A, Fishbein Michael C, Singer Elyse J, Weiss Robert E, Jeffries Robin A, Currier Judith S   Coronary atherosclerotic lesions in human immunodeficiency virus-infected patients: a histopathologic study Cardiovascular pathology : the official journal of the Society for Cardiovascular Pathology, 2009; 18(1): 28-36.
Lester Patricia E, Weiss Robert E, Rice Eric, Comulada W Scott, Lord Lynwood, Alber Susan, Rotheram-Borus Mary Jane   The longitudinal impact of HIV+ parents' drug use on their adolescent children The American journal of orthopsychiatry, 2009; 79(1): 51-9.
Goldstein Iris B, Shapiro David, Weiss Robert E   How family history and risk factors for hypertension relate to ambulatory blood pressure in healthy adults Journal of hypertension, 2008; 26(2): 276-83.
Comulada W Scott, Weiss Robert E   On models for binomial data with random numbers of trials Biometrics, 2007; 63(2): 610-7.
Kitchen Christina M R, Weiss Robert E, Liu Gang, Wrin Terri   HIV-1 viral fitness estimation using exchangeable on subsets priors and prior model selection Statistics in medicine, 2007; 26(5): 975-90.
Comulada W Scott, Weiss Robert E, Cumberland William, Rotheram-Borus Mary Jane   Reductions in drug use among young people living with HIV The American journal of drug and alcohol abuse, 2007; 33(3): 493-501.
Guo Hua, Weiss Robert E, Gu Xun, Suchard Marc A   Time squared: repeated measures on phylogenies Molecular biology and evolution, 2007; 24(2): 352-62.
Solorio M Rosa, Milburn Norweeta G, Weiss Robert E, Batterham Philip J   Newly homeless youth STD testing patterns over time The Journal of adolescent health : official publication of the Society for Adolescent Medicine, 2006; 39(3): 443.e9-443.e16.
Marshall John M, Weiss Robert E   A Bayesian heterogeneous analysis of variance approach to inferring recent selective sweeps Genetics, 2006; 173(4): 2357-70.
Gorbach Pamina M, Sopheab Heng, Chhorvann Chhea, Weiss Robert E, Vun Mean Chhi   Changing behaviors and patterns among Cambodian sex workers: 1997-2003 Journal of acquired immune deficiency syndromes (1999), 2006; 42(2): 242-7.
Grillenberger Monika, Neumann Charlotte G, Murphy Suzanne P, Bwibo Nimrod O, Weiss Robert E, Jiang Luohua, Hautvast Joseph G A J, West Clive E   Intake of micronutrients high in animal-source foods is associated with better growth in rural Kenyan school children The British journal of nutrition, 2006; 95(2): 379-90.
Suchard Marc A, Weiss Robert E, Sinsheimer Janet S   Models for estimating bayes factors with applications to phylogeny and tests of monophyly Biometrics, 2005; 61(3): 665-73.
Rotheram-Borus, M. J., Weiss, R., Alber, S., and Lester. P.   Adolescent Adjustment Before and After HIV-related Parental Death, Journal of Consulting and Clinical Psychology, 2005; 73: 221 - 228.
Suchard, M. A., Weiss, R. E., Sinsheimer, J. S., and Tai, Y. C.   Models for Estimating Bayes Factors with Applications to Phylogeny and Tests of Monophyly. Biometrics, Biometrics, 2005; 61: 665 - 673.
Sigman Marian, Whaley Shannon E, Neumann Charlotte G, Bwibo Nimrod, Guthrie Donald, Weiss Robert E, Liang Li-Jung, Murphy Suzanne P   Diet quality affects the playground activities of Kenyan children Food and nutrition bulletin, 2005; 26(2 Suppl 2): S202-12.
Newman Peter A, Rhodes Fen, Weiss Robert E   Correlates of sex trading among drug-using men who have sex with men American journal of public health, 2004; 94(11): 1998-2003.
Suchard Marc A, Kitchen Christina M R, Sinsheimer Janet S, Weiss Robert E   Hierarchical phylogenetic models for analyzing multipartite sequence data Systematic biology, 2003; 52(5): 649-64.
Ansell Benjamin J, Watson Karol E, Weiss Robert E, Fonarow Gregg C   hsCRP and HDL effects of statins trial (CHEST): rapid effect of statin therapy on C-reactive protein and high-density lipoprotein levels A clinical investigation Heart disease (Hagerstown, Md.), 2003; 5(1): 2-7.
Suchard Marc A, Weiss Robert E, Dorman Karin S, Sinsheimer Janet S   Oh brother, where art thou? A Bayes factor test for recombination with uncertain heritage Systematic biology, 2002; 51(5): 715-28.
Weiss, R. E., Cho, M. and Yanuzzi, M.   On Bayesian Calculations for Mixture Priors and Likelihoods, Statistics in Medicine, 1999; 18: 1555 - 1570.
Weiss, R. E. and Marshall, C. R.   The Uncertainty in the True End Point of a Fossil's Stratigraphic Range When Stratigraphic Sections are Sampled Discretely, Mathematical Geology, 1999; 31: 435 - 453.
Weiss, R. E.   Bayesian Sample Size Computations for Hypothesis Testing. The Statistician, The Statistician, 1997; 46: 185-191.

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