Table 5.

Description of the levels of recommendations in relation to the strength of the evidence

Strength of recommendation	Description	Criteria
A (A−)	Strongly recommended that clinicians (do not) routinely provide the intervention/the assessment to eligible individuals	Good quality of evidence and substantial net benefits or costs
B (B−)	Recommended that clinicians (do not) routinely provide the intervention/the assessment to eligible individuals	Fair quality of evidence and substantial net benefit or costs or Good quality of evidence and moderate net benefit or costs or Fair quality of evidence and moderate net benefit or costs
0	No recommendation for or against routine provision of the intervention/the assessment	Good quality of evidence and small net benefit or costs or Fair quality of evidence and small net benefit or costs
	Insufficient evidence for recommendation of the intervention/the assessment	Poor quality of evidence (conflicting results; balance between benefits and risks difficult to determine; and poor study design)

Adaptation from the Canadian Guide to Clinical Preventive Health Care and from US Preventive Services Resources.6