Table 1 Summary of aims and methods

Identifying the evidence base and theory

To explore the empirical and theoretical evidence relating to PIP and interventions and identify intervention components

Literature search of selected databases and literature review

Modelling

To identify PIP criteria to include in the study

Consensus based methodology

To identify alternative treatment options

Consensus based methodology

Testing components of the intervention with GPs

Patient case studies

Testing patient identification mechanism

Patient case studies

Assessing GP perspectives on intervention

Focus group

Pilot

To test the intervention

GPs conducting medicines review

To evaluate GP perspectives on intervention

Semi-structured interviews with GPs