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Clinical Study Designs
Terms in this set (7)
an observational study collecting case reports describing diagnostic and/or therapeutic challenges
an observational study collecting data from a group of people to assess the frequency of disease (and related risk factors) at a particular point in time: Asks, "What is happening?"
an observational study comparing a group of people with disease to a group without: Asks, "What happened?"
an observational study comparing a group with a given exposure or risk factor to a group without: Asks, "Who will develop disease?" or "Who developed disease?"
randomized controlled trial (RCT)
an experimental/interventional/treatment study randomly assigning eligible people into a group of people receiving the intervention (treatment) and a control group receiving an inactive placebo to see the effects of the intervention (treatment)
an extensive literature analysis of randomized controlled trials on a specific clinical question
a data analysis thoroughly examining a number of valid studies on a specific topic and combining the results using accepted statistical methodology as if they were from one large study
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