Table 1

Measures, research questions and data collection

Dimension	Measure	Research questions	Data source	Analysis type
Implementation	Process	How was the intervention developed and delivered? What inputs, resources and structures were put into place?	Team activity logs Interviews/Focus groups	Quantitative descriptive
	Fidelity (adherence)	To which extent did the intervention align or diverge from the protocol or international practice? What types of adaptations were made to fit the specific context of care delivery?	Trial protocol Systematic review Interviews/Focus groups	Quantitative descriptive
	Dose	What was the duration, coverage and frequency of the intervention?	Team activity logs Recruitment logs	Quantitative descriptive
	Reach	What proportion of the target population (eligible patients) were enrolled in the intervention? What was the attrition rate?	Recruitment logs	Quantitative
Mechanisms	Participants’ responses to and interaction with intervention	How did the patients feel about being involved in the intervention? How did other staff members feel about the intervention?	Interviews/focus groups Data on patients’ satisfaction	Qualitative and quantitative
	Mediators	What aspects of the intervention influenced its implementation (people, operations, relations)?	Interviews/focus groups	Qualitative
	Unexpected pathways and consequences	Was there something about the intervention that was unexpected and might have influenced its implementation?	Interviews/focus groups	Qualitative
Context	Barriers and facilitators	What factors external to the intervention influenced its implementation and in which way? Consider multiple levels: (1) individuals; (2) ED physical environment; (3) ED operations; (4) ED relations; (5) broader hospital or healthcare system	Interviews/focus groups	Qualitative

Measures based on the Medical Research Council (MRC) Framework for process evaluations.1