Table 1 SROI stages, activities, and outputs

Stage 1:

Establishing Scope and Identifying Stakeholders

• Scoping review 1 and stakeholder consultation to determine key supportive care needs

• Stakeholder identification and engagement methods determined

• Supportive care scope and priorities for people with lung cancer defined

• SROI model scope determined

• HREC application and study protocol approved

Stage 2:

Mapping Inputs and Outcomes

• Scoping review 2 evidence for relevant inputs and outcomes

• Stakeholder consultation data analysed to identify stakeholder-informed themes

• Evidence Synthesis to triangulate evidence with local context

• Inputs and outcomes identified and grounded in evidence

• Consensus Map created to document evidence synthesis

• Theory of Change illustrates mechanisms of action

Stage 3:

Evidencing and Valuing Inputs and Outcomes

• Cost-ingredient approach used to value inputs

• Continued evidence synthesis of stakeholder consultation data and published evidence used to assign indicator and/or proxies to outcomes

• Inputs are valued

• Indicators assigned to outcomes; financial proxies assigned to indicators

• Value Map created

Stage 4:

Establishing Impact

• Outcome indicators and supportive care inputs assigned dollar value per capita

• Key scenarios and assumptions identified

• Per capita value adjusted for: deadweight, attribution and drop off

• Sensitivity analysis performed

Stage 5:

Calculating the SROI

• Combined value generated calculated for 1- and 5-year cohorts

• Healthcare system value calculated for 1- and 5-year cohorts

Patient value calculated for 1- and 5-year cohorts

• SROI ratios/value generated interpreted

• Limitations outlined