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The hierarchy of research designs and
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Critical Appraisal of a Research Paper
sumj.dundee.ac.ukhierarchy. Figure 2, below, highlights the differing study designs and their relative robustness and reliability. Evidence from meta systematic reviews carried out by the Cochrane Collaboration, are standard in evidence. These involve the aggregation of the highest quality studies available
How to critically appraise an article - Warwick
warwick.ac.ukthe research question and a careful assessment of the key methodological features of this design. Other factors that also should be considered ... ness have a well-established hierarchy of study designs based on the degree to which the design protects against bias. Meta-analyses of well-conducted RCTs and individual RCTs provide the most robust ...