Planning and developing a web-based intervention for active surveillance in prostate cancer: an integrated self-care programme for managing psychological distress.

The planning and development process is key to successful delivery of an appropriate, accessible and acceptable intervention. The PBA strengthened the intervention by drawing on target-user experiences to maximise acceptability and user engagement. This meticulous description in a clinical setting using this rigorous but flexible method is a useful demonstration for others developing similar interventions. TRIAL REGISTRATION AND ETHICAL APPROVAL: ISRCTN registered: ISRCTN38893965 . NRES Committee South Central - Oxford A. REC reference: 11/SC/0355.