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Loni Philip Tabb, PhD

Loni Philip Tabb

Associate Professor of Biostatistics and Associate Dean for Faculty Affairs
Epidemiology and Biostatistics
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BS, Mathematics, Drexel University
MS, Mathematics, Drexel University
AM, PhD, Biostatistics, Harvard University


Dr. Loni Philip Tabb is Associate Professor of Biostatistics, Associate Dean for Faculty Affairs, and Urban Health Collaborative Research and Data Core Co-Lead.

Dr. Tabb received her MS (2005) and BS (2003) in Mathematics from Drexel University, and her PhD (2010) and AM (2007) degrees in Biostatistics from Harvard University. Her doctoral work focused on developing novel methods in addressing excessive zeros in longitudinal count data applied in environmental as well as health and social disparities settings.

Since joining the faculty at Drexel, her research focuses primarily on spatial statistics and epidemiology with applications in health and social disparities, violence, and toxicity studies. Much of Dr. Tabb’s work involves using Bayesian statistical methods in the presence of complex data structures. Earlier research focused on the intersection of alcohol and violence in urban settings; with a more recent focus on the additional impact of marijuana access and availability - given the changing landscape of legalization of marijuana in the US.

More recently, Dr. Tabb has concentrated her research efforts on the intersection of health and place, specifically as it applies to cardiovascular health. In particular, she uses novel spatial and spatio-temporal statistical methods to look at the local and national geographic patterns of black-white inequities in this country.

Research Interests

  • Cardiovascular Health
  • Health Disparities & Inequities
  • Urban Health
  • Violence and Trauma
  • Environmental Exposures
  • Health and Place 
  • Built Environment
  • Bayesian Statistical Methods
  • Spatial and Spatio-Temporal Disease Mapping


Tabb, L.P., Ballester, L., Grubesic, A., The spatio-temporal relationship between alcohol outlets and violence before and after privatization: A natural experiment, Seattle, WA 2010-2013, Spatial and Spatio-temporal Epidemiology (2016), DOI: 10.1016/j.sste.2016.08.003.

Tabb, L. P., Tchetgen, E. J. T., Wellenius, G. A., Coull, B. A. Marginalized Zero-Altered Models for Longitudinal Count Data (2015). Statistics in Biosciences, 1-23.

Tabb, L. P., Zhao, W., Huang, J., Rosen, G. L. Characterizing the Empirical Distribution of Prokaryotic Genome n-mers in the Presence of Nullomers (2014). Journal of Computational Biology. 21(10): 732-740.

Mhatre, S. D., Michelson, S. J., Gomes, J., Tabb, L. P., Saunders, A. J., Marenda, D. R. Development and characterization of an aged onset model of Alzheimer's disease in Drosophila melanogaster (2014). Experimental Neurology. 261: 772-781.

Rosso, A. L., Tabb, L. P., Grubesic, T. H., Taylor, J. A., Michael, Y. L. Neighborhood Social Capital and Achieved Mobility of Older Adults (2014) Journal of Health and Aging. 26(8): 1301-1319.

Jain, A., Spencer, D., Yang, W., Kelly, J. P., Newscha_er, C. J., Johnson, J., Marshall, J., Azocar, F., Tabb, L. P., Dennen, T. Injuries among children with autism spectrum disorder (2014). Academic Pediatrics. 14(4) : 390-397.

Kumar, N. S., Chin, M., O'Neill, C., Jakoi, A. M., Tabb, L., Wolf, M. On-field performance of National Football League players after return from concussion (2014). The American Journal of Sports Medicine. 42(9):2050-2055.

Bowleg, L., Neilands, T. B., Tabb, L. P., Burkholder, G. J., Malebranche, D. J., Tschann, J. M. Neighborhood Context and Black Heterosexual Men’s Sexual HIV Risk Behaviors (2014). AIDS and Behavior. 18(11): 2207-2218.

Grubesic, T. H., Pridemore, W. A., Williams, D. A., Tabb, L. P. Alcohol Outlet Density and Violence: The Role of Risky Retailers and Alcohol-Related Expenditures (2013) Alcohol and Alcoholism. 48(5): 613-619.

Rosso, A. L., Taylor, J. A., Tabb, L. P., Michael, Y. L. Mobility, Disability, and Social Engagement in Older Adults (2013) Journal of Health and Aging. 25(4): 617-637.

Grubesic, T. H., Murray, A. T., Pridemore, W. A., Tabb, L. P., Liu, Y., & Wei, R. (2012). Alcohol beverage control, privatization and the geographic distribution of alcohol outlets. BMC public health, 12(1), 1015.

Complete List of Published Work

Book Chapters

Klassen, A.C., Curriero, F., Tabb, L.P., Carroll-Scott, A. (2014). Spatial Analysis of Communities. In Jessica G. Burke & Steven M. Albert (Eds.), Methods for Community Health Research: Integrated and Engaged Approaches (pp. 19-44). New York, NY: Springer Publishing Company. 


  • PBHL 628-002: Survival Data Analysis
  • PBHL 693-001: Bayesian Data Analysis
  • PBHL 686-001: Advanced Statistical Computing

Recent Sponsored Research

Examining the Spatial and Spatio-Temporal Relationship of Alcohol Outlets and Violence in Urban Settings Before and After Privatization (Robert Wood Johnson Foundation, Principle Investigator)

Expanding the Evidence of Healing Hurt People (Annie E. Casey Foundation, Co-Investigator)

ATD: Improving Analysis of Microbial Mixtures through Sparse Reconstruction Algorithms and Statistical Inference (NSF, Co-Investigator)

Recent Student Projects

Doctoral (Committee Member):

  • Fetal Testosterone and Early Autism Spectrum Disorder Related Neurodevelopment Outcomes
  • Mobility in Older Adults: Relation to Social and Physical Environment
  • Epidemiology of HIV-1 and Hepatitis Virus Co-Infection: Distribution and Pathogenesis in an Urban Clinic Population
  • Empiric Antibiotic Prescribing and Outcomes in Children Hospitalized with Community Acquired Pneumonia

Masters (MS, Advisor and/or Preceptor):

  • Initiative 1183: Does Privatization Affect the Relationship Between Alcohol Outlets and Violence?
  • Devising a Bayesian Criteria for Monitoring Safety in Clinical Trials: Application to Osteoporosis Study
  • Effect of Age of Initial Licensure on Crash Risk for New Jersey Novice Drivers
  • Counting Process Cox PH Model: A Novel Method for Analyzing Thrombosis-Free Access Survival in Hemodialysis Patients
  • Preoperative Delays for Breast Cancer Patients in the National Cancer Database
  • The Incidence of Parkinson’s Disease in Warfarin Users

Masters (MPH, Advisor):

  • Longitudinal Associations Between Neighborhood Amenities and Mobility in Older Adults
  • Local No. 22 Philadelphia Firefighter and Paramedic Union: A Secondary Analysis of Member Injuries, Civilian Injuries, and Fire Incidence Reports
  • Factors Associated with Being Clear or Almost Clear of Psoriasis in Patients Receiving Adalimumab, Etanercept, or Methotrexate as Part of Routine Clinical Care