Table 2.

Cost inclusions and sources of costing data

Included costs	Data sources	Timing of cost data collection
Component 1 (community engagement and facilitation)
BMI data collection. Costs included: personnel time, travel costs, equipment (scales, tablets, etc)	Project administrative records.	Every 2 years.
GMBs and whole of community sessions. Costs included: personnel time (facilitators and participants), travel, venue/catering, printing/stationery, STICK-E software licence*	Project administrative records, meeting attendance sheets.	Ongoing over 3–9 month period of implementation.
Personnel time and related administrative costs in organising, preparing and reporting results of GMB sessions, supporting backbone organisations and maintenance of community support website.	Project administrative records.	Annually.
Component 2 (the role of the backbone organisation)
Personnel time and related administrative costs in organising meetings of local WHO STOPS working groups and committees, advising and supporting other organisations and community members to plan and implement actions, track and feedback progress and ‘stories’ to community.	Project administrative records, key informant interviews.	Annually.
Meeting facilitation and travel costs.	Project administrative records, key informant interviews.	Annually.
Communication costs including printing and dissemination of newsletters and advertising of meetings and activities.	Project administrative records, key informant interviews.	Annually.
Component 3 (community-led actions)

Included costs	Relevant stakeholder	Data sources	Timing of cost data collection
Community participation in backbone facilitated meetings.	Local authorities (eg, local government, health services, primary schools) and broader community.	Backbone organisation administrative records.	Annually
Community actions. Costs included: Personnel time (planning and implementing actions; follow-up meetings of community progress). Venue hire, and equipment (eg, cooking equipment, sporting equipment). Infrastructure investment (eg, community garden, water fountain, bike path).	Local authorities (eg, local government, health services, primary schools)	Backbone’s action register, community case studies, document review and key informant interviews.	Baseline (IC) then at years 2 and 4 (IC and CC).
	Primary schools (additional)	Survey of school actions.	At years 2 and 4 (IC and CC).
	Broader community	Review of current community actions during whole of community sessions (component 1) Action register, community case studies. Key informant interviews.	Baseline (ICs) and year 2 (CC). At years 2 (IC) and 4 (IC and CC).

*Systems Thinking in Community Knowledge Exchange (STICK-E) is a web-based software developed to aid group model building (GMB) sessions.

CC, control communities; IC, intervention communities; WHO STOPS, Whole of Systems Trial Of Prevention Strategies.