Biostatistical Methods

Driven to improve health, Westat biostatisticians expertly apply appropriate methods to address a wide array of scientific questions in both observational and clinical science.  Our analyses include anywhere from a handful of patients in a clinical setting to millions in an electronic health record (EHR) system, sometimes each with hundreds of data points.  When an existing method does not meet the needs of a study or the implications of an analytic choice are unclear, we develop and test new methods in collaboration with our clients.

Epidemiologic Studies

Westat’s epidemiologists have supported critical epidemiological research studies, utilizing various study methods and designs to assess data retrospectively and prospectively. Westat has developed and utilized innovative tools and methods to provide clients with research services that support epidemiologic studies related to both communicable and non-communicable diseases.  Westat’s epidemiologic studies have supported research that has direct policy implications such as collaborating to produce the White House Reports on Long COVID, information about household transmission of SARS-CoV-2, and COVID-19 vaccine effectiveness estimates.

Disease Surveillance

Westat is committed to using our expertise in epidemiology, statistics, and public health to strengthen disease surveillance. Our efforts to monitor trends, identify sentinel events, and track key metrics provide decisionmakers with critical situational awareness. Partnering with federal and state agencies in fields ranging from infectious disease to substance abuse, we apply rigorous methodology to both traditional and innovative data collection and analysis, generating timely insights to support public health action.