Types of interventions
We included studies assessing the effects of a single intervention or
multiple interventions involving chronic disease prevention and
management, on adherence to dietary advice. ’Intervention’ was
defined as the method used to facilitate changes in dietary habits
through dietary advice. To structure the presentation of results, we
grouped interventions according to the intervention functions of
the behaviour change wheel developed by Michie and colleagues
(Michie 2011). Therefore, we classified interventions to enhance
adherence to dietary advice as: