Table 3.

Overview of the key ways in which the terms dose, dose delivered and dose received were conceptualised across the included intervention studies

Operationalisation	Dose or dosage	Dose delivered	Dose received
Planned intervention
Amount of intervention planned (e.g. number of intervention components planned; intended length of intervention components)	✓
Intervention delivery
Number of intervention components delivered	✓	✓
Length/duration of intervention components	✓	✓
Frequency of delivery of intervention components	✓	✓
Completeness of intervention delivery (amount of intervention components delivered as a proportion of those planned)	✓	✓
Intensity of intervention	✓
Availability of intervention		✓	✓
Content of intervention components (and degree to which these were delivered as planned)		✓
Intervention receipt
Number of intervention components received	✓		✓
Exposure	✓		✓
Reach	✓
Attendance	✓		✓
Completion of intervention activities			✓
Use of intervention materials			✓
Extent of engagement with intervention	✓		✓
Other concepts
Number of people trained to deliver intervention	✓
Commitment to intervention		✓	✓
Satisfaction with intervention	✓		✓
Perceptions of intervention feasibility			✓

Note: While some of the concepts in this table would perhaps not usually be considered to be part of dose, this synthesis is based on a consideration of how dose was defined and operationalised in practice across the included articles. We explore the implications for these conceptualisations of dose in the ‘Discussion’ section