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CompletedNCT04177628Updated Nov 1, 2023

Shared Decision Making With Breast Cancer Patients

An interventional study of Shared decision making supported by an in-consultation patient decision aid in Shared Decision Making, Breast Neoplasms and Radiotherapy, Adjuvant, sponsored by Vejle Hospital. Completed at 7 sites in Denmark. Open to female participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2023-11-01.

Sponsored by Vejle Hospital · Not applicable, Interventional, and Supportive care

Phase
Not applicable
Study type
Interventional
Enrollment
678
Allocation
Randomized
Ages
18 Years and older
Sex
Female
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Study summary

The aim of this project is to elucidate whether the use of shared decision making will influence patient engagement in the decision making process about adjuvant radiotherapy after breast conserving surgery for local breast cancer or early stages of local breast cancer.

Read the detailed description

The risk of recurrence of breast cancer is lowered by adjuvant medical treatment as well as by radiotherapy (RT). On the other hand, all adjuvant treatments involve a risk of side effects; some are acute and transient while others are long-term. Considering the well-known side effects of irradiation, it seems appropriate to involve patients in the decision on whether to receive irradiation.

In the shared decision making (SDM) process clinicians and patients work together to make appropriate health decisions based on clinical evidence and the patient's informed preferences. A patient decision aid (PtDA) is instrumental in the SDM process.

This study is a multicenter, national trial randomizing doctors to either use or not use SDM and a PtDA when informing the patients about benefits and risks of receiving adjuvant radiotherapy.

It is not expected that significantly less patients will receive radiotherapy as a consequence of SDM. The primary aim of the study is to evaluate whether patient engagement in decision making is affected by SDM and the use of an in-consultation PtDA.

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Conditions studied

  • Shared Decision Making
  • Breast Neoplasms
  • Radiotherapy, Adjuvant

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03

In context

Breast Neoplasms

12,828 studies on the registry are indexed under Breast Neoplasms; 2,923 are open to participants now.

This study's enrollment of 678 is above the median of 72 across 9,498 interventional studies indexed under Breast Neoplasms.

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Lead sponsor

Vejle Hospital is the lead sponsor of 95 studies on the registry; 13 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
Female
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Histologically verified breast cancer or ductal carcinoma in situ breast cancer
  • Candidate for adjuvant radiotherapy Danish Breast Cancer Group type F after breast-conserving surgery for T1-2, N0-Nmi, M0 disease according to national guidelines.
  • Signed confirmation of participation.

Exclusion criteria

Exclusion Criteria:

  • Bilateral breast cancer or suspicion of disseminated cancer
  • Unable to understand the information, the planned treatment or follow-up for any reason.
  • Earlier radiotherapy towards the thoracic region.
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Study design

Phase
Not applicable
Primary purpose
Supportive care
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
678 participants (actual)

Study arms

  • Experimental
    Arm A: Shared decision making

    Patients will be informed by a doctor randomized to practice shared decision making and use the in-consultation PtDA during the consultation on adjuvant radiotherapy.

    Behavioral: Shared decision making supported by an in-consultation patient decision aid

  • No intervention
    Arm B: Usual practice

    Patients will be informed by a doctor randomized to inform about adjuvant radiotherapy according to usual practice.

Interventions

  • BehavioralShared decision making supported by an in-consultation patient decision aid

    After having received training in SDM, the doctor will practice SDM supported by an in-consultation PtDA during the consultation with the participant.

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What researchers measure

Primary outcomes

  1. Participant engagement in the decision making process as measured by the Shared Decision Making Questionnaire 9.

    Minimum value: 0. Maximum value: 100. The higher the value the more patient engagement.

    Time frame: Within one week after the consultation

Secondary outcomes

  1. The doctor's perception of patient engagement in the decision making process as measured by the Shared Decision Making Questionnaire doctor 9

    Minimum value: 0. Maximum value: 100. The higher the value the more patient engagement.

    Time frame: Within one week after the consultation

  2. The participant's fear of cancer recurrence as measured by the Fear of Cancer Recurrence Short form Questionnaire

    Minimum value: 0. Maximum value: 36. The higher the value the more fear of recurrence.

    Time frame: Within one week after the consultation and again after six months

  3. The participant's engagement in the decision making process as measured by the Shared Decision Making Process 4 questionnaire

    Minimum score: 0. Maximum score: 4. The higher the score the more patient engagement.

    Time frame: Within one week after the consultation

  4. The participant's effectiveness in decision making as measured by the Decisional Conflict Scale questionnaire

    Minimum value: 0. Maximum value: 100. The higher the value the more effective decision making.

    Time frame: Before (12 items) and within one week after the consultation (all 16 items)

  5. The participant's regret of the treatment decision as measured by the Decision Regret Scale questionnaire

    Minimum value: 0. Maximum value: 100. The higher the value the more regret.

    Time frame: Six months after the consultation

  6. The participant's engagement in the decision making process as measured by the CollaboRATE questionnaire

    Minimum score: 0. Maximum score: 9. The higher the value the more patient engagement.

    Time frame: Within one week after the consultation

  7. The participant's quality of life as measured by the EORCT QLQ-C30 (version 3.0) questionnaire, only question 29 + 30

    Minimum value: 0. Maximum value: 100. The higher the value the more quality of life.

    Time frame: Six months

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Study locations

7 sites
  • Aalborg Hospital
    Aalborg, Denmark
  • Aarhus University Hospital
    Aarhus, Denmark
  • Rigshospitalet
    Copenhagen, Denmark
  • Herlev University Hospital
    Herlev, Denmark
  • Sjaellands University Hospital
    Næstved, Denmark
  • Odense University Hospital
    Odense, Denmark
  • Vejle Hospital
    Vejle, Denmark
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References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 1, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT04177628
Lead sponsor
Vejle Hospital
Collaborators
Danish Breast Cancer Cooperative Group, University of Southern Denmark, Danish Comprehensive Cancer Center
Responsible party
Sponsor
First posted
Nov 26, 2019
Start date
Mar 4, 2020
Primary completion
Dec 31, 2022
Completion
Jul 31, 2023
Last update
Nov 1, 2023

Study contacts

Karina D Steffensen, Professor
study chair · Vejle Hospital
Stine R Sondergaard, M.D.
principal investigator · Vejle Hospital

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Oct 2023. You cannot join it, but the record below documents what was studied.

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