Colorectal Cancer Screening in Average Risk Populations: Evidence Summary

Table 1

Description of the quality of evidence grades according to Grading of Recommendations, Assessment, Development and Evaluations (GRADE) [9].

Grade	Definition
High	We are very confident that the true effect lies close to that of the estimate of the effect
Moderate	We are moderately confident in the effect estimate: the true effect is likely to be close to the estimate of the effect, but there is a possibility that it is substantially different
Low	Our confidence in the effect estimate is limited: the true effect may be substantially different from the estimate of the effect
Very low	We have very little confidence in the effect estimate: the true effect is likely to be substantially different from the estimate of effect