Post-diagnosis dietary patterns among cancer survivors in relation to all-cause mortality and cancer-specific mortality: a systematic review and meta-analysis of cohort studies v1

This study aims to synthesize the latest evidence regarding the association of a priori and a posteriori dietary patterns with robust outcome measures, such as total mortality and cancer-specific mortality, expanding our search chronologically, including more databases, implementing robust risk of bias tools and focusing exclusively on the post-diagnosis period. A systematic literature review will be conducted and all cohort studies will be evaluated. The methodological rigour of the included studies was critically appraised using the ROBINS-I (Risk Of Bias In Non-randomized Studies of Interventions) tool, which is proposed for non-randomized studies of interventions/exposures.