"Critical appraisal is the process of carefully and systematically examining research to judge its trustworthiness, and its value and relevance in a particular context." (Burls 2009). For a more detailed explanation see the links to further resources. Please note that access to YouTube may be blocked on some networks.
Introduction to critical appraisal. [4.12 Min.] [Presentation] [ YouTube ]
Critical Appraisal of the Evidence [4.32 Min.] [Presentation] [YouTube]
Basics of Critical Appraisal, Dr. John Epling [18.33 Min.] [Lecture] [YouTube]