Table 4

GRADE checklist—best evidence synthesis23

Quality levelDefinition/criterion
HighWe are very confident that the true measurement property lies close to that of the estimate of the measurement property
ModerateWe are moderately confident in the measurement property estimate: the true measurement property is likely to be close to the estimate of the measurement property, but there is a possibility that it is substantially different
LowOur confidence in the measurement property estimate is limited: the true measurement property may be substantially different from the estimate of the measurement property
Very lowWe have very little confidence in the measurement property estimate: the true measurement property is likely to be substantially different from the estimate of the measurement property