Reviewing complex interventions is challenging because they include many elements that can interact dynamically in a nonlinear manner. A systems perspective offers a way of thinking to help understand complex issues, but its application in evidence synthesis is not established. The aim of this project was to understand how and why systems…

This article identifies and unpacks three key decision points in a systematic mixed research synthesis, a mixed methods approach to research synthesis. The research community has increasingly recognized the value of synthesis studies in expanding our understanding of phenomena. Mixed-methodology broadly has also gained ground as a pragmatic…