I am an Assistant Professor in the Department of Biostatistics, Yale University. I am also a faculty member in the Center for Methods in Implementation and Prevention Science (CMIPS). I received my Ph.D. in Biostatistics from Duke University in May, 2019.

My main research interest is comparative effectiveness methodology in pragmatic randomized trials and observational studies. For pragmatic trials, I have advanced the covariate-constrained randomization techniques to design cluster randomized trials (see my Grand Rounds talk at the NIH Collaboratory), and developed the marginal model framework for the design and analysis of complex longitudinal cluster randomized trials (see my 2018 IBS Journal Club presentation on stepped wedge designs). For observational studies, I have contributed propensity score weighting methods to enable causal inference with difference-in-differences designs and multiple treatments.


Address: Room 229, 135 College Street, New Haven, CT 06510

Tel: (203) 764-9835

Email: fan.f.li [@] yale [DOT] edu | frank.li [@] yale [DOT] edu


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Yale Department of Biostatistics

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