Table 2 Key terminology

Acceptability (determinant): perceptions among the delivery team that a given intervention is agreeable, palatable, or satisfactory [54]

Adaptation (outcome): planned or purposeful changes to the design or delivery of an intervention; can also include unintentional deviations from the intervention as originally designed [55]

Dose delivered (outcome): intended units of each intervention component delivered to participants by the delivery team [56]

Feasibility (determinant): perceptions among the delivery team that an intervention can be successfully used or carried out within a given organization or setting [54]

Fidelity (outcome): the extent to which an intervention is implemented as it was prescribed in the intervention protocol – by the delivery team [57]