Major clinical guidelines 'relying on weak evidence'

And the review might even underestimate the extent, say Aussie researchers

Key Australian clinical practice guidelines are based on “very weak” evidence and some include no recommendations backed by top-quality research, a study suggests.

Guidelines

The review of the scientific basis of 10 major clinical guidelines (see table below) used in Australia has found only 18% of the 748 recommendations they made were based on the highest level of evidence — defined by the NHMRC as a systematic review of randomised controlled trials.

And only 25% of the recommendations were based on “moderate” evidence, defined as evidence based on

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