Table 7.

Grade recommended strength classification and definition

Recommended strength	Explanation	Expression method	Expression method
Strong recommendations to support the use of an intervention	The advantages of the intervention measures outweigh the disadvantages	Recommended	1
Weak recommendations to support the use of an intervention	Interventions may have more advantages than disadvantages	Recommended use	2
Weak recommendations against the use of an intervention	Interventions may do more harm than good or the relationship between the advantages and disadvantages is not clear	Not recommended	2
Strong recommendations against the use of an intervention	The disadvantages of the intervention measures are obviously greater than the advantages	Not recommended	1