The traditional evidence pyramid remains a useful heuristic device for evaluating scientific evidence in medicine and health care.
The highest quality evidence in the top two levels of the pyramid is the most difficult to process.
The lowest quality of evidence at the bottom two levels of the pyramid is the easiest to process.
This is probably the main reason that journalists devote so much attention to anecdotal accounts, e.g. see here.
[…] recent post described the evidence pyramid. Like anything else in science, there have been criticisms. Here I liken evidence-based practice to […]
[…] It is an anecdote that carries no weight as scientific evidence. […]
[…] research by seasoned investigators. The anecdotes supporting cure claims are at the bottom of the Evidence Pyramid. In-depth investigations of positive thinking among patients with serious illnesses suggest that […]
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