Table 2.

Appraisal criteria for usefulness and relevance

High	Moderate	Low
Papers that have high relevance—framing of research and research questions are highly matched to review questions, empirical findings are clearly described, rich description of process and context.	Papers that have a moderately relevant framing to theories—report on different but related interventions, similar outcomes, describe middle-range theories, areas of interest, potential to populate CMOCs.	Papers that met the inclusion criteria but little description of context and mechanism. Contains at least one idea or statement about the context, mechanisms or outcomes that can be used for refining theory and building CMOCs.

CMOCs, context-mechanism-outcome configurations.