Informed choice about RAI treatment

The primary outcome is informed choice measured with the Multi-Dimensional Measure of Informed Choice (MMIC). The scores for informed choice include two components: knowledge categorized as high/low based on the mid-point in the range of scores on the knowledge measure (minimum score of 0 and maximum score of 10; higher scores indicate greater knowledge) and values (attitudes) that are categorized as positive or negative based on the mid-point on the attitude items (minimum score of 4; maximum score of 28; higher scores more greater alignment of the RAI treatment decision with personal values. Informed choice is characterized as informed or uninformed. An informed choice means a decision based on high knowledge and values (attitudes) that align with the patient's preferences and final treatment decision. An uninformed choice occurs when a patient has low knowledge or makes a decision that doesn't match their personal values and attitudes.

4 weeks

Knowledge about RAI

Knowledge about RAI is measured with an adapted version of a knowledge measure developed by Sawka and colleagues, using 10 items with true, false, or unsure response options. Scores range from a minimum of 0 to a maximum of 10. Knowledge refers to a patient's factual understanding of RAI treatment. Higher scores indicate higher knowledge.

Baseline

Knowledge about RAI

Knowledge about RAI is measured with an adapted version of a knowledge measure developed by Sawka and colleagues, using 10 items with true, false, or unsure response options. Scores range from a minimum of 0 to a maximum of 10. Knowledge refers to a patient's factual understanding of RAI treatment. Higher scores indicate higher knowledge.

1 week

Knowledge about RAI

Knowledge about RAI is measured with an adapted version of a knowledge measure developed by Sawka and colleagues, using 10 items with true, false, or unsure response options. Scores range from a minimum of 0 to a maximum of 10. Knowledge refers to a patient's factual understanding of RAI treatment. Higher scores indicate higher knowledge.

4 weeks

Knowledge about RAI

Knowledge about RAI is measured with an adapted version of a knowledge measure developed by Sawka and colleagues, using 10 items with true, false, or unsure response options. Scores range from a minimum of 0 to a maximum of 10. Knowledge refers to a patient's factual understanding of RAI treatment. Higher scores indicate higher knowledge.

6 months

Decisional Conflict

Decisional Conflict is measured with the 4-item SURE scale, a short form of the Decisional Conflict Scale developed by O'Connor and colleagues. Response options are Yes or No; the minimum score is 0 and the maximum score is 4. Lower scores indicate higher levels of decisional conflict.

Baseline

Decisional Conflict

Decisional Conflict is measured with the 4-item SURE scale, a short form of the Decisional Conflict Scale developed by O'Connor and colleagues. Response options are Yes or No; the minimum score is 0 and the maximum score is 4. Lower scores indicate higher levels of decisional conflict.

1 week

Decisional Conflict

Decisional Conflict is measured with the 4-item SURE scale, a short form of the Decisional Conflict Scale developed by O'Connor and colleagues. Response options are Yes or No; the minimum score is 0 and the maximum score is 4. Lower scores indicate higher levels of decisional conflict.

4 weeks

Decisional Conflict

Decisional Conflict is measured with the 4-item SURE scale, a short form of the Decisional Conflict Scale developed by O'Connor and colleagues. Response options are Yes or No; the minimum score is 0 and the maximum score is 4. Lower scores indicate higher levels of decisional conflict.

6 months

Decisional Regret

Decisional regret is assessed using the 5-item Decisional Regret Scale developed by Brehaut and colleagues. Responses are made on a 5-point Likert Scale from strongly agree to strongly disagree. Scores range from a minimum of 0 to a maximum of 100. Higher scores indicate higher decisional regret.

4 weeks

Decisional Regret

Decisional regret is assessed using the 5-item Decisional Regret Scale developed by Brehaut and colleagues. Responses are made on a 5-point Likert Scale from strongly agree to strongly disagree. Scores range from a minimum of 0 to a maximum of 100. Higher scores indicate higher decisional regret.

6 months

Satisfaction with Decision

Satisfaction with treatment decision about RAI treatment is assessed using the 6-item Satisfaction with Decision Scale by Wills and colleagues. Responses are made on a 5-point Likert scale from strongly disagree to strongly agree. Scores range from a minimum of 6 to a maximum of 30. Higher scores indicate higher satisfaction with treatment decision.

6 months

Informed choice about RAI treatment

Informed choice is measured with the Multi-Dimensional Measure of Informed Choice (MMIC). The scores for informed choice include two components: knowledge categorized as high/low based on the mid-point in the range of scores on the knowledge measure (minimum score of 0 and maximum score of 10; higher scores indicate greater knowledge) and values (attitudes) that are categorized as positive or negative based on the mid-point on the attitude items (minimum score of 4; maximum score of 28; higher scores more greater alignment of the RAI treatment decision with personal values. Informed choice is characterized as informed or uninformed. An informed choice means a decision based on high knowledge and values (attitudes) that align with the patient's preferences and final treatment decision. An uninformed choice occurs when a patient has low knowledge or makes a decision that doesn't match their personal values and attitudes.

6 months