Kaminski et al1 used feedback and quality benchmark indicators to improve colonoscopy performance and happily they succeeded. They confirmed that increasing the rate of adenoma detection (RAD) is associated with a reduced risk of colorectal cancer and death.2 Nevertheless, their findings may not be generalizable to other settings. First, they should provide the rationale how they divided ADR into quintiles of ≤11.21%, 11.22% to 15.10%, 15.11% to 19.17%, 19.18% to 24.56%, and >24.56%; these divisions seem arbitrary and very different from their previous reports.