This paper illustrates the use of a quality assessment tool for regression analysis. It is designed for non-specialist "consumers" of evidence, such as policy makers. The tool provides a series of questions such consumers of evidence can ask to interrogate regression analysis, and is illustrated with reference to a recent study published in a peer-reviewed journal. The application of the tool highlights the need for non-specialists to develop their critical skills to ensure regression analysis meets methodological norms. They cannot rely on the fact that it has undergone a peer-review process to assume that the evidence is credible.