Risk of bias and grade | Type of recommendation | Formulation |
---|---|---|
Low: Grade 1 | Positive recommendation + | Should be |
High level of evidence | Negative recommendation − | Should not be |
Intermediate to high: Grade 2 | Positive recommendation + | Should probably be |
Intermediate to low level of evidence | Negative recommendation − | Should probably not be |
High: expert opinion | Positive recommendation + | Should probably be (expert opinion) |
No available data | Negative recommendation − | Should probably not be (expert opinion) |