Associated Instructors

Instructors

Emeritus Faculty

  • Bruce Levin

    • Professor Emeritus of Biostatistics

    About

    Dr. Bruce Levin has a long-standing interest in the application of statistics in the law and the use of innovative statistical methods for clinical trials. With respect to statistics in the law, Dr. Levin has served as an expert statistical witness in many cases, including administrative hearings and equal employment opportunity lawsuits. He is the co-author with the lawyer Michael O. Finkelstein of the textbook, Statistics for Lawyers, now in its 3rd Edition.  With respect to clinical trials, using sequential statistical methods, Dr. Levin has published on innovative trial designs that minimize ethical costs, and has been involved in the design of many clinical trials.  As the senior statistical design consultant to the Statistical Analysis Center, within the Department of Biostatistics, Dr. Levin helped design the Warfarin and Aspirin in Reduced Cardiac Ejection Fraction (WARCEF) trial, the Co-enzyme Q10 in ALS (QALS) trial, and other trials in cardiology and neurology. Dr. Levin is also the Director of the Statistics, Epidemiology, and Data Management Core of the HIV Center for Clinical and Behavioral Studies, a joint center of Columbia University and the New York State Psychiatric Institute.  In this role he oversees the statistical design, analysis, and, together with the Center's Performance and Safety Monitoring Board, oversees the conduct of the trials.  He is an expert in the analysis of categorical data and co-authored the classic textbook, Statistical Methods for Rates and Proportions, 3rd Edition, Myunghee Cho Paik and the late Joseph L. Fleiss.  He also published The Biostatistics of Aging: From Gompertzian Mortality to an Index of Aging-Relatedness with Gilberto Levy.

    Credentials & Experience

    Education & Training

    PhD, 1974 Harvard University

    Committees, Societies, Councils

    Fellow, American Statistical Association
    APHA Statistics Section Award Winner
    Member, International Biometrics Society, ENAR
    Member, Institute of Mathematical Statistics

    Honors & Awards

    Statistics Section Award, American Public Health Association, 2008
    Fellow, American Statistical Association, 2001
    Summa Cum Laude, Columbia College, 1968
    Phi Beta Kappa, Columbia College, 1968

    Research

    Research Interests

    • Biostatistical Methods
    • Chronic disease
    • HIV/AIDS
    • Infectious Diseases
    • Maternal and Reproductive Health

    Selected Publications

    Michael O. Finkelstein and Bruce Levin Statistics for Lawyers, 3rd Edition. Springer-Verlag New York, NY 2015

    Fleiss, J.L., Levin, B., and Paik, M.C. Statistical Methods for Rates and Proportions, 3rd Edition. Wiley New York, NY 2003

    Levy, G. and Levin, B. (2014). The Biostatistics of Aging: From Gompertzian Mortality to an Index of Aging-Relatedness. New York: Wiley.

    Levin, B. and C.-S. Leu. On an Inequality That Implies the Lower Bound Formula for the Probability of Correct Selection in the Levin-Robbins-Leu Family of Sequential Binomial Subset Selection Procedures. Sequential Analysis 32 404-427 2013

    Caplan, A., Plunkett, C., and Levin, B. (2015). Selecting the Right Tool for the Job (invited paper). American Journal of Bioethics 15(4):4-10 (with open peer commentaries, pp. 33-50).

    Caplan, A., Plunkett, C., and Levin, B. (2015). The Perfect Must Not Overwhelm the Good: Response to Open Peer Commentaries on ""Selecting the Right Tool For the Job"". American Journal of Bioethics 15(4):W8-W10.

    Levin, B., Thompson, J.L.P., Chakraborty, B., Levy, G., MacArthur, R.B., Haley, E.C. (2011). Statistical Aspects of the TNK-S2B Trial of Tenecteplase versus Alteplase in Acute Ischemic Stroke: An Efficient, Dose-Adaptive, Seamless Phase II/III Design. Clinical Trials 8:398-407.

    Bruce Levin The Saddlepoint Correction in Conditional Logistic Likelihood Analysis. Biometrika 77 275-285 1990

    Finkelstein, M.O. and Levin, B. Bush v. Gore: Two Neglected Lessons from a Statistical Perspective. Jurimetrics 2004

    M.O. Finkelstein and B. Levin On the Probative Value of Evidence from a Screening Search. Jurimetrics 43 265-290 2003

    Urban Health Activities

    Statistics, Epidemiology and Data Management (SED) Core of the HIV Center for Clinical and Behavioral Studies

    This multidisciplinary AIDS Research Center focuses on behavioral strategies for prevention of HIV infection and coping with HIV/AIDS in neglected populations. Dr. Levin is director of the SED Core, which is responsible for statistical design and analysis, data management, and epidemiologic considerations for the Center?s funded randomized behavioral intervention trials.

    Warfarin vs. Aspirin in Reduced Cardiac Ejection Fraction-STAT

    This is the Statistical Analysis and Anticoagulation Data Management Center for a multi-center double blind randomized clinical trial to determine whether warfarin or aspirin is better at preventing stroke and death in patients with reduced cardiac ejection fraction. Dr. Levin is the senior statistical consultant.

  • Xinhua Liu

    • Professor Emerita of Biostatistics at CUMC

    About

    Dr. Xinhua Liu has collaborated with epidemiologists, bio-pharmacists, clinical psychologists, neurologists, psychiatrists, pediatricians, and other medical professionals. Widely published in many areas, Dr. Liu has proposed a method for modeling functional decline and applied it to study the progression of Alzheimer's disease, in addition to identifying predictors among patients with mild cognitive impairment. Dr. Liu also has investigated risk behaviors of HIV infection and HIV related neurological disease progression in studies of gay and bisexual men as well as among intravenous drug users. In the area of environment health, Dr. Liu was involved in studies on the effects of lead exposure on children's development in Yugoslavia; water arsenic and water manganese exposure on children's intellectual function in Bangladesh; association between folate intake during pregnancy in Mexico and sporadic retinoblastoma. Dr. Liu's interests also include studies in mental health, investigating risk factors of suicide and suicidal attempts, the impact of alcohol policies on alcohol dependence, effects of major depression in relation to substance use disorders, effects of major depression on remission, and relapse of substance dependence. As a biostatistician at the Columbia Center for Environment Health in Northern Manhattan, Dr. Liu provides statistical consultation to center members, tutoring to students, and teaches a biostatistics course.

    Credentials & Experience

    Education & Training

    MS, 1982 Shanghai Medical College
    PhD, 1991 Johns Hopkins University

    Research

    Research Interests

    • Aging
    • Biostatistical Methods
    • Child and Adolescent Health
    • Chronic disease
    • Environmental Health
    • Food Policy and Obesity
    • Infectious Diseases
    • Mental Health
    • Substance Use

    Selected Publications

    Hall M.N., Liu X., Slavkovich V., Ilievski V., Alam S., Factor-Litvak P., Pilsner J.R., Graziano J.H. and Gamble M.V. Folate, Cobalamin, Cysteine, Homocysteine, and Arsenic Metabolism among Children in Bangladesh Environmental Health Perspectives 117 (5) 825-831 2009

    Pilsner J.R., Liu X., Ahsan H., Ilievski V., Slavkovich V., Levy D., Factor-Litvak P., Graziano J.H., and Gamble M.V. Folate Deficiency, Hyperomocystinemia and Hypomethylation of Genomic DNA are Risk Factors for Arsenic-Induced Skin Lesions: A Nested Case-Control Study in Bangladesh Environmental Health Perspectives 117 (2) 254-260 2009

    Liu X. and Zhezhen Jin Z. A Non-Parametric Approach to Scale Reduction for Uni-Dimensional Screening Scales International Journal of Biostatistics 5 (1) Article 7 2009

    Wu P., Liu X., Fang Y., Fan B., Guan Z., Fuller C.J., Yao Z., Kong J., Lu J., Wang Q. Alcohol Abuse/Dependence Symptoms Among Hospital Employees Exposed to a SARS Outbreak Alcohol and Alcoholism 43(6) 706-712 2008

    Devanand D.P., Liu X., Tabert M.H., Pelton G.H., Pradhaban G., Bell K., de Leon M.J., Doty R., Stern Y., Cuasay K. Combining Early Markers Strongly Predicts Conversion from Mild Cognitive Impairment to Alzheimer's Disease Biological Psychiatry 64 (10) 871-879 2008

    Wasserman G.A., Liu X., Factor-Litvak P., Gardner J.M., Graziano J.H. Developmental Impacts of Heavy Metals and Nutrition Basic & Clinical Pharmacology & Toxicology 102 212-217 2008

    Lamb M.R., Janevic T., Liu X., Cooper T., Kline J., Factor-Litvak P. Environmental Lead Exposure, Maternal Thyroid Function, and Childhood Growth Environmental Research 106 (2) 195-202 2008

    Devanand D.P., Pradhaban G., Liu X., Khandji A., De Santi S., Segal S., Rusinek H., Pelton G.H., Honig L, Mayeux R., Stern Y., Tabert M.H., de Leon M.J. Hippocampal and Entorhinal Atrophy in Mild Cognitive Impairment: Prediction of Alzheimer Disease Neurology 68 828-836 2007

    Liu X. and Jin Z. Item Reduction in A Scale for Screening. Statistics in Medicine 26 4311-4327 2007

    Gamble M.V., Liu X., Slavkovich V., Ilievski V., Pilsner J.R., Factor-Litvak P., Islam M., Alam S., Parvez F., Ahsan H., Graziano J.H. Folic Acid Supplementation Lowers Blood Arsenic American Journal of Clinical Nutrition 86 (4) 1202-1209 2007