Analytical Frameworks in Colorectal Cancer Guidelines: Development of Methods for Systematic Reviews and their Application

Abstract

Background: Analytical frameworks (AF) are graphical representation of the key questions answered by a systematic review and can support the development of guideline recommendations. Our objectives are to a) conduct a systematic review to identify, describe and compare all AFs published as part of a systematic and guideline development process related to colorectal cancer (CRC); and b) to use this case study to develop guidance on how to conduct systematic reviews of AFs. Methods: We conducted a systematic review and searched Medline and Embase from 1996 until December 2020. We also manually searched guideline databases and websites. We identified all guidelines in CRC that utilized an AFs and all systematic reviews in primary prevention, screening, and diagnosis of CRC that used AFs. We assessed quality of the guidelines using the Appraisal of Guidelines for Research and Evaluation II tool. The systematic review was registered in PROSPERO, registration CRD42020172117. Results: We screened 34,505 records and identified 1166 guidelines on CRC and 3127 systematic reviews, of which 5 met our inclusion criteria identifying a total of 4 AFs in colorectal cancer. We describe our search strategy and methods for conducting systematic reviews for AFs. Conclusion: Few guidelines and systematic reviews are utilizing AFs in the development of recommendations. We developed methods for conducting a systematic review on AF