Grade | Interpretation | Description |
---|---|---|
High | Very confident that the estimate of effect lies close to the true effect for this outcome. | • The body of evidence has few or no deficiencies. • We believe that the findings are stable, that is, another study would not change the conclusions. |
Moderate | Moderately confident that the estimate of effect lies close to the true effect for this outcome. | • The body of evidence has some deficiencies. • We believe that the findings are likely to be stable, but some doubt remains. |
Low | Limited confidence that the estimate of effect lies close to the true effect for this outcome. | • The body of evidence has major or numerous deficiencies (or both). • We believe that additional evidence is needed before concluding either that the findings are stable or that the estimate of effect is close to the true effect. |
Insufficient | No evidence; unable to estimate an effect, or no confidence in the estimate of effect for this outcome. | • No evidence is available or the body of evidence has unacceptable deficiencies, precluding reaching a conclusion. |