Introduction: Health policy decision-makers are grappling with increasingly complex and ethically controversial decisions at a time when citizens are demanding more involvement in these decision processes.Objectives: To assess and revise a set of guiding principles for the design of public involvement processes generated from a synthesis of public participation design and evaluation frameworks that can be used to inform the design and evaluation of future public participation processes in the health sector.Methods: Six focus groups held in five Canadian provinces comprising citizens with considerable experience of public participation processes.Results and discussion: Our findings suggest that citizen participants are highly critical of, and discerning about, their public participation experiences. Yet, they are optimistic and determined to contribute in meaningful ways to future public policy processes. They are clear about where improvements are needed and give top priority to what information is shared...