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Related to observational study: experimental study
A research study in which the results are obtained retrospectively or without a control group. Some examples include case reports, chart reviews, and longitudinal studies of large cohorts followed over time.Synonym: observational trial
See also: study
a scholarly examination. Specific types of study are also detailed under blind, case-control, cohort, cross-sectional.
one in which a phenomenon is described and an attempt made to analyze the effects of variables on the phenomenon.
one in which a phenomenon is described but no attempt is made to analyze the effects of variables on the phenomenon.
one carried out to find out whether there has been change in the situation since the initial study.
one carried out over a period of time so that chronological time has an opportunity to exert an effect as a variable.
see descriptive study (above).
one in which the data to be studied are yet to be generated, the events having not yet occurred.
one based on examination of existing data, on events that have already occurred.
one in which the real circumstances are simulated, either in fact, or by means of a set of mathematical formulae each of which expresses the probability of each outcome in a series of consequential events that mirror the possible pathways in a real-life situation.