Table 1 Content of data collection outcome measures

Patient Q1

Decisional Conflict Scale [7]

Patient-reported perceived measure of four of five dimensions of decisional conflict (e.g., uncertainty, uninformed, unclear values, unsupported)

12 items

5 point Likert scale (0–4)

Mean standardized score*25 (0–100)

Control Preference Scale [27]

Patient-reported preference for the patient’s preferred role in shared decision making

1 item with five statements

(pick one)

Access to digital PtDA

Patients in intervention

arm II are asked if they have accessed and used the digital PtDA

Yes/No

– if no, to state the reason:

• Cannot install the app

• Cannot open the PtDA in the app

• Problems with e-Boks

• Other technical issues

• Did not have the time

• Do not want to see the options

• Other cause / do not know

Patient Q2

Shared Decision Making Process 4 (SDM Process_4) [24]

Patient-reported engagement

4 items

4 point Likert scale (0–1, yes/no)

Points are summed (0–4)

Decisional Conflict Scale [7]

Patient-reported perceived measure of five dimensions of decision making

16 items

5 point Likert scale (0–4)

Mean standardized score*25 (0–100)

Shared Decision Making Questionnaire 9 (SDM-Q-9) [25]

Patient-reported experience measure of perceived level of involvement

9 items

6 point Likert scale (0–5)

Mean score*20 (0–100)

CollaboRATE [26]

Patient-reported measure of patient experienced involvement

3 items

10 point Likert scale (0–9)

Mean score (0–9)

Preparation for decision making scale [12]

Patient-reported measure of preparation for decision making

10 items

5 point Likert scale (1–5)

Mean standardized score*25 (0–100)

Access to paper-based PtDA

Patients in intervention

arm II are asked if the clinician showed them the paper-based PtDA during consultation

Yes/No/Do not know

Clinician Q1

Shared Decision Making Questionnaire 9 Doctor (SDM-Q-doc) [28]

Clinician-reported measure of perceived level of involvement

9 items

6 point Likert scale (0–5)

Mean standardized score*20 (0–100)

Use of digital PtDA

Clinicians are asked if patients in intervention arm II took out their smartphone or tablet during consultation to use the digital PtDA

Yes/no

Observer O1

OPTION5 [28]

Observer-perceived patient involvement in shared decision making

5 items

5 point Likert scale (0–4)

Mean standardized score*25 (0–100)`

Other

Length of consultation

Minutes based on the audio recordings