Shared Decision-Making for Determining Treatment Strategies in Low-Risk Thyroid Cancer

Decision Regret Scale: DRS

measures distress and remorse after making a healthcare decision. Scale ranges from 1 (Strongly agree) to 5(Strongly Disagree). The final score, the items are summed and averaged. ranging from 0 (no regret) to 100 (high regret).

Time frame: at 6month, 12month after enrollment

Shared Decision Making Questionnaire (SDM-Q-9)

a nine-item questionnaire assessing the quality of SDM from both patient and clinician perspectives. Scale ranges from 1(completely disagree) to 6(completely agree). Higher scores are indicative of more SDM.

Time frame: at enrollment, and 6month, 12month after enrollment

Patients' Perceived involvement of Care Scale (PICS)

a 13-item questionnaire evaluating patient engagement in primary care \[12\]. It measures Clinician's information provision, patient's proactive information-seeking, and patient participation in treatment decisions (5-point Likert scale; 1 = Strongly Disagree, 5 = Strongly Agree). Higher scores indicate lower clinician control and greater patient involvement in decision-making.

Time frame: at enrollment, and 6month, 12month after enrollment

multifocal approach to sharing in shared decision making(Mappin'SDM)

that incorporates physician, patient, and observer perspectives during medical consultations. a 15-item tool adapted from the 12-item OPTION scale to evaluate observed patient involvement in decision-making \[13\]. Each item consists of behavioral and outcome components (a total of 30 items), rated by patients, clinicians, and observers (through real-time or via video review). Scale ranges from 0(not at all) to 5(absolutely true). High scores indicate high quality of decision-making communication across patient engagement.