What is it?

Examining and reviewing the overall impact of the intervention, and assessing what was achieved at key milestones (short, medium, long).

Why do this?

  • There are many reasons to evaluate the outcomes. You will need to be able to judge and demonstrate the success (or otherwise) of your intervention in order to make judgements about its contribution to the issue you set out to address, the value for money achieved, and what future actions are needed

How might you do this?

  • Make an assessment of the outcomes achieved using indicators across short, medium and long-term timescales. More >
  • It is helpful to develop an ‘outcomes roadmap’ (or logic model). This sets out the underlying logic of your thinking about how the intervention will work to change people’s behaviour in different ways over time. More >
  • Be as objective as possible, for example by using several data sources to check and validate your evaluative findings. More >
  • The cost-effectiveness, or the return on investment (ROI), of the intervention can be calculated as part of the outcome evaluation. More >


  • You need clear and measurable behavioural goals from the outset so that evaluation can assess if they have been achieved
  • ‘Awareness’ and ‘audiences’ views’ are important, but not as important as what actually happens to the behaviours that you are concerned with
  • Try and link your evaluation into a behaviour change model. More >
  • There are numerous national and local surveys which provide baseline data and tested questions for use in your own surveys. More >
  • Showing that the intervention has achieved a positive return on investment can help you make a strong case for continued funding


  • Determining the impact on the behavioural goals set for the intervention

Intended Outcome

  • The information required to enable you to report on the outcomes and impacts of the intervention, including reporting on return on investment