Figure 1

Phases of design and development following a User centred design aproach, where the aim was to bring out issues centred around the end user’s interaction with a prototype without placing any explicit demands on them. The process diagram shows prototypes in the form of an alpha (α) and beta (β) CDS tool, each followed by a user centred design phase. This led to the development of a tool for the pilot study, which upon further improvement would be suitable for a randomised controlled trial.