Table 1.

NIH BCC intervention fidelity domains and strategy aims [1]

NIH BCC Fidelity Domain	Domain specific strategy aims	Strategy target
Study design	Strategies to ensure that a behaviour change study adequately tests it hypotheses in line with its underlying theory and / or clinical guidelines	Interventionist
Training	Strategies to standardise (or individualise where required) training to ensure that all trainees have been satisfactorily trained to deliver the behaviour change intervention consistently and competently	Interventionist
Delivery	Strategies to monitor and improve the delivery of a behaviour change intervention through its standardisation to ensure the intervention is delivered as it was intended	Interventionist
Receipt	Strategies to monitor and improve the ability of patients to perform the intervention skills provided through intervention delivery	Patient
Enactment	Strategies to monitor and improve the ability of patients to perform the intervention skills provided through delivery in real-life settings	Patient