Clinical practice guidelines and consensus for the screening of breast cancer: A systematic appraisal of their quality and reporting

Ministry of Science, Innovation, and University of Granada/Consorcio de Bibliotecas Universitarias de Andalucia (CBUA)Introduction: Clinical practice guidelines (CPGs) and consensus statements (CSs) are being promoted to provide high-quality healthcare guidance. This systematic review has assessed the breast cancer (BC) screening CPGs and CSs quality and reporting. Methods: A search of bibliographic databases (MEDLINE, Embase, Web of Science, Scopus and CDSR), 12 guideline databases and 51 professional society websites was performed without language restrictions from January 2017 to June 2020, following prospective registration (Prospero no.: CRD42020203807). AGREE II (% of maximum score) and RIGHT (% of total 35 items) appraised quality and reporting individually, extracting data in duplicate; reviewer agreement was 98% and 93%, respectively. Results: Forty guidances with median overall quality and reporting 51% (interquartile range [IQR] 39–63) and 48% (IQR 35–65), respectively. Twenty-two (55%) and 20 (50%) did not reach the minimum standards (scores