Participants will not receive GOCI materials

Participants will receive GOCI materials and clinicians will receive training.

Can-GUIDE will provide videos on a number of SDM topics including interviews with patients and clinicians discussing patient involvement in SDM and how goal conversations can inform the decision making process. Furthermore, there will be instructional videos on how to complete the Goal conversations sheet. Accompanying the videos will be interactive elements which will help users consider the types of questions that they wish to ask their clinical teams. The goal conversation sheet allows patients to list their goals and priorities that they wish to bring up in the consultation with their clinical teams. The Goals of Care (GOC) tool is a communication aid for clinicians to summarise goals of care discussions such as those facilitated by the goals conversation sheet. The completed tool will then be logged onto the Electronic Patient Record (EPR) and is then disseminated to other HCPs involved in the patients care.

Patient involvement in decision making will be measured using the SDM-Q-9 questionnaire. The questionnaire contains nine items with respondents scoring on a six point scale (0 represents completely disagree to 5 which represents completely disagree) how much they agree with the presented statement. The highest score attainable, 45, represents the highest level of perceived Shared Decision Making and 0 represents no perceived involvement in Shared Decision Making.

Patient satisfaction with decision and overall decision conflict will be measured using the Ottawa Decisional Conflict Scale. The scale consists of 16 items with patients scoring themselves on a five point scale (0, Strongly Agree - 4, Strongly Disagree). The scale includes five subscales: uncertainty, support, values, informed, effective decision.

The total score and subscale scores are calculated by dividing the sum of the items by the number of items within that subscale and multiplying by twenty five (scored range from 0 to 100; 0 score indicates no decisional conflict, 100 indicates extremely high decisional conflict). This scale evaluates the quality of decision as outlined within internationally recognised guidelines to establish the effectiveness of decision aids. Furthermore, some of the subscales address evaluating the quality of the decision process (feeling informed about the options, clarity of values).

A patient's ability to make a decision about treatment (or decision self-efficacy) will be measured using the Ottawa Decision Self-Efficacy scale. The scale consists of 11 items where patients score themselves on a five point scale (0, not at all confident - 4, Very confident); high score indicates greater decision self-efficacy. The total score provides a global rating of self confidence in the patient's ability to engage with decision making regarding their treatment. The total score is calculated by summing the 11 items, dividing by 11 and then multiply by 25.