Core GRADE 4: rating certainty of evidence—risk of bias, publication bias, and reasons for rating up certainty

An error occurred in figure 2 of this paper by Guyatt and colleagues (BMJ 2025;389:e083864, doi:10.1136/bmj-2024-083864, published 13 May 2025). The wording of the second box in the right column should have stated “Appreciable [rather than “No appreciable”] evidence exists from low risk of bias studies†.” The figure has been corrected and the pdf updated.