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Biostatistics and Research Methods

The American Heritage Dictionary defines statistics as: "The mathematics of the collection, organization, and interpretation of numerical data, especially the analysis of population characteristics by inference from sampling." The Merriam-Webster's Collegiate Dictionary definition is: "A branch of mathematics dealing with the collection, analysis, interpretation, and presentation of masses of numerical data." The steps of statistical analysis involve collecting information, evaluating it, and drawing conclusions.

Statisticians provide crucial guidance in determining what information is reliable and which predictions can be trusted. They often help search for clues to the solution of a scientific mystery, and sometimes keep investigators from being misled by false impressions. Statisticians help determine the sampling and data collection methods, monitor the execution of the study and the processing of data, and advise on the strengths and limitations of the results. They must understand the nature of uncertainties and be able to draw conclusions in the context of particular statistical applications.

Statistical planning, analysis, and inference is so crucial to the kind of research conducted by Hopkins GIM researchers that the Division has built a cadre of in-house methodologists, trained in epidemiology and biostatistics, who work side-by-side with content-oriented clinical researchers and their trainees.

Information about the faculty working in this research area and their projects is provided below.

Photo of Dr. Josef Coresh, M.D., Ph.D.

Coresh, Josef, M.D., Ph.D.

Joint Appointment in Medicine
Director, Cardiovascular Epidemiology Training Program
Director, George W. Comstock Center for Public Health Research and Prevention
Research Interests: Epidemiology, Cardiovascular epidemiology, Vascular diseases, Kidney diseases, Genetic epidemiology
Photo of Dr. Eliseo Guallar, M.D., M.P.H.

Guallar, Eliseo, M.D., M.P.H.

Joint Appointment in Medicine
Research Interests: Cardiovascular disease epidemiology, Epidemiologic methods, Polyunsaturated fatty acids, Fish oils, Heavy metals, Meta-analysis
Photo of Dr. Karen A. Robinson, M.Sc., Ph.D.

Robinson, Karen A., M.Sc., Ph.D.

Associate Professor of Medicine
Joint Appointment in Health Sciences Informatics
Director, JHU Evidence-based Practice Center
Joint Appointment in Epidemiology, Johns Hopkins University Bloomberg School of Public Health
Joint Appointment in Health Policy & Management, Johns Hopkins University Bloomberg School of Public Health
Research Interests: Health informatics, Evidence-based health care
Photo of Dr. Dhananjay Madhukar Vaidya, M.B.B.S., M.P.H., Ph.D.

Vaidya, Dhananjay Madhukar, M.B.B.S., M.P.H., Ph.D.

Associate Professor of Medicine
Research Interests: Mechanisms of vascular dysfunction, Assessment of cardiovascular risk factors
Photo of Dr. Nae-Yuh Wang, M.S., Ph.D.

Wang, Nae-Yuh, M.S., Ph.D.

Associate Professor of Medicine
Director, Childhood Development after Cochlear Implantation Study Data Coordinating Center
Director, Biostatistics Sub-Core and Clinical Trial Sub-Core, Health Care and Population Science Core, Diabetes Research Center
Director of Biostatistics, Bayview General Clinical Research Unit
Research Interests: Epidemiology, Longitudinal data, Kidney transplants, Cochlear implant, Biostatics, Weight loss, Type 2 diabetes, Multicenter studies, Randomized controlled trials, Pediatric cochlear implantation, Statistical and epidemiologic methods, Longitudinal data analysis
Photo of Dr. Hsin-Chieh Yeh, Ph.D.

Yeh, Hsin-Chieh, Ph.D.

Associate Professor of Medicine
Associate Professor of Oncology
Sr. Epidemiologist, Osler Housestaff Research Program
Director, GIM Methods Core
Director, JHU-UMD Diabetes Research Center Health Care and Population Science Core
Core Faculty Member, Welch Center for Prevention, Epidemiology and Clinical Research
Research Interests: obesity and cancer, cancer epidemiology, clinical trials, racial disparity

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