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observational study
A type of study in which individuals are observed or certain outcomes are measured. No attempt is made to affect the outcome (for example, no treatment is given).
Previous Definitions:
obesity
,
objective improvement
,
objective response
,
oblimersen
,
observation
Next Definitions:
obsessive-compulsive disorder
,
obstruction
,
obtundation
,
occult primary tumor
,
occult stage non-small cell lung cancer
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