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Glossary

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O

OSAGWI
Office of the Special Assistant for Gulf War Illnesses, a position created by the Deputy Secretary of Defense in 1996 to investigate events in the Gulf War which might have a bearing on the health of Gulf War veterans.

Observational study
A study in which the investigators do not manipulate the use of an intervention (e.g., do not randomize patients to treatment and control groups), but only observe patients who are (and sometimes patients who are not) exposed to the intervention, and interpret the outcomes.

Outcomes research
Evaluates the impact of health care on the health outcomes of patients and populations. It may also include evaluation of economic impacts linked to health outcomes, such as cost effectiveness and cost utility. Outcomes research emphasizes health problem- (or disease-) oriented evaluations of care delivered in general, real-world settings; multidisciplinary teams; and a wide range of outcomes, including mortality, morbidity, functional status, mental well-being, and other aspects of health-related quality of life. It may entail any in a range of primary data collection methods and synthesis methods that combine data from primary studies.

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