Protocol for the development of a reporting guideline for umbrella reviews on epidemiological associations using cross-sectional, case-control and cohort studies: the Preferred Reporting Items for Umbrella Reviews of Cross-sectional, Case-control and Cohort studies (PRIUR-CCC)
BMJ Open. 2024 Jun 17;14(6):e071136. doi: 10.1136/bmjopen-2022-071136. ABSTRACT INTRODUCTION: Observational studies are fraught with several biases including reverse causation and residual confounding. Overview of reviews …