Appropriateness of colorectal cancer screening: appraisal of evidence by experts.

Objective: . To evaluate how the level of evidence perceived by an international panel of experts was concordant with the level of evidence found in the literature, to compare experts perceived level of evidence to their appropriateness scores, and to compare appropriateness criteria for colonoscopy between experts and an evidence-based approach.

Design: Comparison of expert panel opinions and systematic literature review regarding the level of evidence and appropriateness of colonoscopy indications.