Conclusion
This paper describes the EDDIE + intervention in sufficient detail to be replicated. The refinement process from pilot to implementation scale-up including adaptations to context during the process were discussed. The process described may assist other researchers planning and evaluating the scale up of a complex interventions into practice. The combination of an implementation framework (i-PARIHS) and published guidance on developing and evaluating complex interventions was practical and beneficial in this implementation study. These processes are vastly underreported, yet vital for future research in this area.