Ashkan Ertefaie

Associate Professor
University of Rochester Medical Center Department of Biostatistics and Computational Biology

My methodological research interest lies in causal inference, dynamic treatment regimes, sequential multiple assignment randomized trials, comparative effectiveness studies using electronic health records, instrumental variable analyses, high-dimensional data analysis, post selection inference, and survival analysis. Particularly, I am interested in methodologies that lead to constructing the optimal sequence of treatments in chronic diseases where patients are monitored and treated throughout their life. Thus far, I have been primarily motivated by…

Nima Hejazi

Assistant Professor
Department of Biostatistics, Harvard T.H. Chan School of Public Health

Nima Hejazi, PhD, is an Assistant Professor of Biostatistics at the T.H. Chan School of Public Health of Harvard University. He completed an NSF Mathematical Sciences Postdoctoral Research Fellowship, and, before this, obtained his PhD in Biostatistics from UC Berkeley. He was on the founding core development team of the tlverse project (, an extensible ecosystem for targeted learning in the R language, and, since 2020, has collaborated closely with…

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Antonella Zanobetti

Principal Research Scientist
HSPH Department of Environmental Health

Ph.D.,1999, Department of Statistics, University of Florence, Italy The area of my research interest focuses on the health consequences of exposure to air pollutants and climate change, and environmental health disparities. My research interests are shaped by my background and training in both epidemiology and statistics, by developing and applying statistical methods for epidemiological investigations. My work has contributed substantially to our understanding of air pollution and climate change-mediated health…

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Danielle Braun

Principal Scientist
HSPH Department of Biostatistics

Danielle Braun is a Principal Scientist in the Biostatistics Department at the Harvard T.H. Chan School of Public Health and at the Department of Data Science at Dana-Farber Cancer Institute. Her areas of research include risk prediction, genetic epidemiology, measurement error, survival analysis, frailty models, clinical tool development, causal inference, and comparative effectiveness research. As a senior research scientist Danielle co-leads the BayesMendel lab with Dr. Parmigiani and works with Dr. Dominici.

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David Christiani

Professor of Environmental Genetics
HSPH Department of Environmental Health

My major research interests are occupational, environmental and molecular epidemiology. I have been interested in studying the impact of exposures to various pollutants on health and the interactions between host factors (genetic and acquired susceptibility), and environmental exposures in producing acute and chronic diseases. This research is part of a field known as molecular epidemiology. I have been active in developing new methods for assessing health effects after exposure to…

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Joel Schwartz

Professor of Environmental Epidemiology
HSPH Department of Environmental Health

My research is divided in three main areas: First, I am interested in epidemiology looking at the health consequences of exposure to pollutants. To date this has had two focuses: health effects of lead and health effects of air pollutants. I have recently begun work looking at water contamination. In lead, I have examined cardiovascular effects of lead exposure in adults, cognitive effects in children, auditory effects in children, and…

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Rachel Nethery

Assistant Professor of Biostatistics
HSPH Department of Biostatistics

I am an Assistant Professor in the Department of Biostatistics at the Harvard T.H. Chan School of Public Health. The aim of my research is to develop statistical methods that enable maximally rigorous and impactful uses of data to answer environmental health questions. In particular, my recent work centers on (1) methods for estimation of the health impacts of complex environmental regulations and quasi-experiments and (2) methods for studying the…

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Tanujit Dey

Assistant Professor of Surgery
Harvard Medical School

Associate Director of Biostatistics for Surgery and Public Health
Assistant Professor at Harvard Medical School

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Marianthi-Anna Kioumourtzoglou

Assistant Professor
Columbia University School of Public Health Department of Environmental Health Sciences

Marianthi-Anna Kioumourtzoglou is an environmental engineer and epidemiologist. She holds a Master of Science in Public Health (MSPH) from the Environmental Sciences and Engineering Department at the University of North Carolina at Chapel Hill and a Doctor of Science (ScD) in Environmental Health from the Harvard TH Chan School of Public Health, where she also conducted her post-doctoral fellowship. She is currently an Assistant Professor at the Department of Environmental…