Table 1.

The four constructs of NPT (after Teunissen et al12)

Construct	What it addresses
Sense making	Can those involved in the implementation make sense of it?
Engagement	Do relevant participants ‘buy into’ the implementation work? Can those involved maintain their involvement and get others involved and engaged?
Enactment	What has to be done to make the intervention being implemented work in routine practice?
Appraisal	How can the intervention be monitored and evaluated? Can it be redesigned to sustain its use?