ABSTRACT
Evaluation of programmes and interventions is vital to understand how interventions do (or do not) work. A variety of methodological approaches are available to evaluate interventions. The suitability of different methodological approaches depends on various factors including what intervention is being assessed, what outcomes are of interest, and the circumstances under which the evaluation is taking place. Common methodological approaches include randomised controlled trials, non-randomised/quasi-experimental studies, natural experiments, longitudinal studies, and simulation modelling. These different approaches allow evaluation to be carried out in a range of settings related to the food environment. Examples of different methods are provided here together with their strengths and limitations.
