Box 1.

Glossary of Key Terms and Abbreviations

Context (C)	Preexisting conditions outside the control of the intervention developers which influence the success or failure of the intervention (ref Pawson and Tiley 200831)
Mechanism (M)	Peoples’ reaction(s) to the implementation of the intervention; how does it change their reasoning and actions? (ref Pawson and Tiley 200831)
Outcome (O)	Intended and unintended consequences of the intervention as a result of a mechanism operating within a context (ref Pawson and Tiley 200831)
Intervention (I)	Features of the intervention resource (ref Pawson and Tiley 200831)
Implementation	The constellation of processes intended to get an intervention into use within an organization
Patient decision aid (PtDA)	Interventions that support patients to make decisions, by making decisions explicit, providing information about options and associated benefits/harms, and helping clarify congruence between decisions and personal values (ref Stacey 20171)