Table 1 Description of the P3P decision aid structure and content⁺

Program introduction and instructions

• Video with a proxy patient voiceover discusses receiving a diagnosis and beginning to consider options

• Introduces user to the purpose of P3P and how to use it

• Text instructions of how to navigate and answer questions in the website

Questionnaires

• Page with short text introduces the subject of each questionnaire

• Tailors educational content and communication coaching to user’s values and topics of interest

• Questionnaires cover demographics, influential decision factors, decision control preference, current symptoms, and information sources

• Most questions presented one question per page

Understanding statistics

• Pictographs with text legends illustrate the percentage of patients likely to experience an outcome

• Teaches numeracy skills for understanding prostate cancer information

• Outcomes include survival and/or possible adverse outcomes of treatment

• Provides general information on treatment outcomes

Factors influencing the care decision

• Text provides basic general information on side effects of different treatment modalities

• Teaches user treatments may have different side effects

• Text encourages the user to talk to his doctor about concerns he endorsed – with suggested wording, including fill-in-the-blank text for the user to customize

• Coaches user to communicate values and concerns to providers to enhance education and informed decisions

• Videos model patient-provider conversation about the selected topic

Decision control preference

• Videos show patients with different levels of decision control discussing their care decision with their doctor

• Encourages user to think about his role in the care decision

General information about prostate cancer

• Printable teaching sheets on common topics, such as stage, care options, and side effects of treatment

• Provides general prostate cancer information the user can keep

• Links to reputable websites