Yajuan Si
- Email Yajuan Si
- (734)764-6935
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BIO
Yajuan Si is a Research Associate Professor in the Survey Methodology Program, located within the Survey Research Center at the Institute for Social Research on the University of Michigan-Ann Arbor campus. She received her Ph.D on Statistical Science in 2012 from Duke University. Before joining the University of Michigan in 2017, Yajuan was an assistant professor jointly in the Department of Biostatistics & Medical Informatics and the Department of Population Health Sciences at the University of Wisconsin-Madison and a Postdoctoral Research Scholar in the Department of Statistics at Columbia University. Dr Si’s research lies in cutting-edge methodology development in streams of Bayesian statistics, complex survey inference, missing data imputation, causal inference, and data confidentiality protection. Yajuan has extensive collaboration experiences with health services researchers and epidemiologists to improve healthcare and public health practice, and she has been providing statistical support to solve sampling and analysis issues on health and social science surveys.
- Brady Thomas West, Yajuan Si, Yueying Hu, Sean Esteban McCabe, Philip Todd Veliz. 2025. The role of weighting adjustment for attrition in longitudinal trajectory modeling: a simulation study. Communications in Statistics - Simulation and Computation 54(3):866-888 .
- Yajuan Si, Roderick J Little, Ya Mo, Nell Sedransk. 2024. Nonresponse Bias Analysis in Longitudinal Studies: A Comparative Review with an Application to the Early Childhood Longitudinal Study. International Statistical Review 92(3):383-405.
- Shirley Mathur, Yajuan Si, Jerome P Reiter. 2024. Fully Synthetic Data for Complex Surveys. Survey methodology 50(2):347.
- Zikai Lin, Yajuan Si, Jian Kang. 2024. Latent subgroup identification in image-on-scalar regression. The Annals of Applied Statistics 18(1):468-486.
- Katherine Li, Yajuan Si. 2023. Embedded multilevel regression and poststratification: Model-based inference with incomplete auxiliary information. Statistics in Medicine 43(2):256-278.
- Yajuan Si, Sunghee Lee, Steven G Heeringa. 2023. Population Weighting in Statistical Analysis. JAMA Internal Medicine 184(1):98-99.
- Yajuan Si, Steven G Heeringa, Johnson, David, Roderick J Little, Liu, Wenshuo, Fabian T Pfeffer, Trivellore E Raghunathan. 2023. Multiple Imputation with Massive Data: An Application to the Panel Study of Income Dynamics. Journal of Survey Statistics and Methodology 11(1):260-283.
- Yajuan Si, Nicholas Moloci, Sitara Murali, Sarah Krein, Andy Ryan, John M. Hollingsworth. 2022. Use of Preventive Care Services and Hospitalization Among Medicare Beneficiaries in Accountable Care Organizations That Exited the Shared Savings Program. JAMA Health Forum 3(1):e214452.
- Yajuan Si, Roderick J Little, Ya Mo, Nell Sedransk. 2022. A Case Study of Nonresponse Bias Analysis in Educational Assessment Surveys. Journal of Educational and Behavioral Statistics 48(3):271-295.
- Schumacher, Jessica R, Neuman, Heather B, Yu, Menggang, Vanness, David J, Yajuan Si, Burnside, Elizabeth S, Ruddy, Kathryn J, Partridge, Ann H, Schrag, Deborah, Edge, Stephen B, Zhang, Ying, Jacobs, Elizabeth A, Havlena, Jeffrey, Francescatti, Amanda B, Winchester, David P, McKellar, Daniel P, Spears, Patricia A, Kozower, Benjamin D, Chang, George J, Greenberg, Caprice C. 2022. Surveillance imaging vs symptomatic recurrence detection and survival in stage II-III breast cancer (AFT-01). JNCI: Journal of the National Cancer Institute 114(10):1371-1379.