People
ISR Hub

Brady T. West
CSCAR@ISR Director and ISR Faculty Lead
Brady worked for the old model of CSCAR as a Masters student in the Department of Statistics from 2001-2002. He fell in love with the service goals and overarching philosophy of CSCAR during this time, and joined CSCAR in 2003 as a consulting statistician after earning an MA in Applied Statistics. He worked full-time for CSCAR for the next five years before returning to Michigan for a PhD in Survey and Data Science in 2008. He continued working for CSCAR during his PhD studies, and joined ISR as a faculty member in the Survey Methodology Program of the Survey Research Center after earning his PhD in late 2011. He would continue to provide consulting services for CSCAR until 2018. He later became a Research Professor (by dry appointment) in the Department of Biostatistics at the U of M School of Public Health in 2023. Now an elected Fellow of the American Statistical Association and a named Collegiate Research Professor at ISR and Biostatistics, he is the author of 9 books on statistical methods and survey methodology and more than 240 peer-reviewed journal articles in applied statistics, survey methods, and public health. Brady currently serves as the Overall Director of CSCAR@ISR.
Brady T. West's CV (PDF)

Paul Schulz
Operations Manager
Paul Schulz (operations manager and consulting statistician) manages client-facing operations of CSCAR, including the consultation services as well as paid project work. Schulz has over 20 years of experience at the University of Michigan, including roles as a survey statistician, statistical consultant, and manager. He specializes in statistical methods and computing, including hypothesis testing, data analysis and modeling, sampling (including weight creation and adjustment, and power calculations), as well as the use of secure computing enclaves (SRCVDI, Likert cluster, and Flux/Great Lakes). Paul writes code in Stata and SAS for general-purpose desktop computing, and R and Python for selected applications, such as data visualization and web scraping/automation, among other uses

Paul Burton
Statistical and Survey Methodology Consultant
Paul Burton is a statistician with nearly 20 years of experience working in survey research organizations, the last 12 of which were spent at the University of Michigan's Survey Research Operations. His work has focused on the design, implementation, and analysis of complex samples for large-scale national studies, including the Health and Retirement Study, the National Survey of Family Growth, and the American National Election Study. He has extensive experience consulting with principal investigators and research teams on statistical methodology, survey design, data collection strategies, and the use of Census, geographic, and commercial data to improve sampling efficiency and reach hard-to-reach populations.
Paul holds a B.S. in Food and Bioprocess Engineering from the University of Illinois at Urbana-Champaign and an M.A. in Public Administration from Michigan State University, where he also completed doctoral coursework in statistical methodology and American politics.

Anne Cohen
PhD Student in Survey and Data Science
Anne (Annie) Cohen is a PhD candidate in Survey and Data Science. She graduated from Scripps College with a BA in Mathematics and Anthropology and received an MS in Biostatistics at the University of Michigan. She is a Statistics in the Community (STATCOM) leadership team member and her research focuses on developing Bayesian statistical inference for complex survey data and estimation with small sample sizes.

Joy Wu
PhD Student in Survey and Data Science
Joy Wu is a PhD student at the University of Michigan's Program in Survey and Data Science. Her research interests include applications of different statistical and data science approaches to missing data.
Biostatistics Spoke

Matt Zawistowski
Biostatistics Faculty Lead
Matthew Zawistowski is a Clinical Associate Professor of Biostatistics. Matt completed his dissertation and postdoc in Biostatistics at the University of Michigan, focusing on problems in statistical and population genetics, including the design and analysis of large-scale genome sequencing studies for a range of complex diseases. Following his postdoc, Matt worked briefly at the Ann Arbor VA where he gained valuable hands-on experience building clinical phenotypes from Electronic Health Records. He returned to UM to contribute his expertise in genetics and EHR to the Michigan Genomics Initiative (MGI), a biobank of linked genetic and clinical data for Michigan Medicine patients. For several years Matt served as a statistical consultant for UM faculty seeking to incorporate MGI into their own research. Beyond research, Matt is passionate about teaching math and statistics. He is the Director of the Department of Biostatistics Big Data Summer Institute and was awarded the 2022 SPH Excellence in Teaching award.
Matthew Zawistowski's CV (PDF)

Abigail Mauger
PhD Student in Biostatistics
Abigail Mauger is a PhD candidate in Biostatistics at the University of Michigan. She earned her M.S. in Biostatistics from the University of Michigan in 2024 and her B.S. in Biochemistry and Molecular Biology from Pennsylvania State University in 2022. Her research interests include analysis of single cell -omics data and the development of methods for statistical genetics/genomics applications.
TBD
Biostatistical Consultant
Statistics Spoke

Johann Gagnon-Bartsch
Statistics Faculty Lead
Johann Gagnon-Bartsch is an Associate Professor in the department of Statistics. He looks forward to assisting with all aspects of statistical practice, from study design to modeling to ensuring final results are reproducible. His own research focuses on causal inference, machine learning, and nonparametric methods with applications in the biological and social sciences.

Abner Bustos
Statistical Consultant
Abner Heredia Bustos is a Data Science Consultant at CSCAR@ISR. He holds a Master’s in Applied Statistics from the University of Michigan and a Bachelor in Economics from the Instituto Tecnológico Autónomo de México. His main expertise includes Bayesian multilevel models for clustered and longitudinal data; survival analysis; and models for bounded, ordinal, and categorical data. He is also experienced in R, Python, Stan, SQL, Markdown, and LaTeX.

Jaylin Lowe
PhD Student in Statistics
Jaylin Lowe is a fifth year Ph.D. student in Statistics at the University of Michigan. Her research interests include causal inference, survey methodology, and machine learning with applications to the social sciences.
Additional CSCAR Affiliates

Alexis Castellanos
AI Program Manager
Alexis is an AI Program Manager and CSCAR Affiliate with a background in Computer Science. They specialize in building traditional machine learning models, custom generative AI applications, and smart workflow automations for the University of Michigan community. Through their work, Alexis helps UMich researchers simplify complex technical challenges and accelerate academic discovery.