cSCAN Rounds

Digital Health Interventions: Development, Optimisation and Evaluation

Digital health interventions hold a lot of promise; they have a broad reach and are more effective than controls for behaviours such as alcohol consumption and smoking. However, the majority of digital interventions available are developed without reference to scientific evidence or theory, and very few have been evaluated in a definitive trial. This highlights the urgent need for digital interventions that follow a systematic and iterative development process with a robust evaluation strategy. Drink Less – a smartphone app to help the general population of drinkers reduce their alcohol consumption – was developed following the Multiphase Optimisation Strategy (MOST). MOST is a sequenced, experimental approach for efficiently and systematically developing, optimising and evaluating multi-component interventions within given constraints. Dr Claire Garnett will talk through each of the key stages of development, optimisation and evaluation of Drink Less: i) choosing the theoretical model for intervention development; ii) identifying which intervention components to include; iii) evaluating the effectiveness of individual components; iv) understanding user engagement; v) optimising the app; and vi) plans for a definitive trial.