题目内容
Case reports can be used to test the presence of a statistical association.
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Randomized clinical trials are deemed to be the gold standard in clinical research.
The most appropriate research strategy and the design of the study depend on two key factors: research question and available resources which include time, budget, equipment, and staff.
Efficacy (explanatory) trials test the efficacy of a treatment (or an intervention) among highly selected participants and under controlled conditions.
Effectiveness (pragmatic) trials test the efficacy of a treatment (or an intervention) under real conditions among participants who are highly selected and provides useful information about the practice.
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