The following video (5 mins, 36 secs.) helps to clarify the process of critical appraisal, how to systematically examine research, e.g. using checklists; the variety of tools /checklists available, and guidance on identifying the type of research you are faced with (so you can select the most appropriate appraisal tool).
Critical appraisal of an RCT: introduction to use of CASP checklists
The following video (4 min. 58 sec.) introduces the use of CASP checklists, specifically for critical appraisal of a randomised controlled trial (RCT) study paper; how the checklist is structured, and how to effectively use it.
Webinar recording of critical appraisal of an RCT
The following video is a recording of a webinar, with facilitator and participants using a CASP checklist, to critically appraise a randomised controlled trial paper, and determine whether it constitutes good practice.
'Focus on' videos
The following videos (all approx. 2-7 mins.) focus on a particular aspects of critical appraisal methodology for quantitative studies.