Decisional Conflict Scale
Decisional Conflict Scale (DCS) · Also known as: DCS-16, Decisional Conflict Inventory
The Decisional Conflict Scale (DCS) is a 16-item self-reported outcome measure that quantifies the degree of uncertainty, value ambivalence, and decision distress experienced by patients facing healthcare choices. Developed by Annette O'Connor in 1995, the DCS assesses five core domains: personal uncertainty, understanding of options and outcomes, clarity of personal values, perceived social support, and confidence in making the decision. It has become the gold standard for measuring decisional conflict in healthcare research and clinical trials of decision support interventions.
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When to use it
The DCS is used in research evaluating decision support interventions (decision aids, counselling programs, shared decision-making training) and in clinical trials where reducing decisional conflict is an outcome. It is appropriate for patients facing elective healthcare decisions with multiple options: surgical procedures, medical treatment plans, medication choices, fertility treatments, and end-of-life planning. Suitable for literate adults with sufficient time (5-10 minutes) to complete the questionnaire. Not appropriate for emergency decisions where time does not permit.
Strengths & limitations
- Comprehensive construct measurement: 16 items across five dimensions (uncertainty, informed, values, support, confidence) provide detailed diagnostic information about the sources of decisional conflict.
- Strong psychometric properties: validated in multiple populations, languages, and decision contexts; reliable and responsive to change in intervention trials.
- Subscale sensitivity: five subscales enable identification of where conflict originates (e.g., lack of information vs. values uncertainty vs. social pressure), guiding targeted interventions.
- Clinically meaningful scores: thresholds (>50 indicates significant conflict) correlate with delayed decision implementation and reduced satisfaction; validated against behavioral outcomes.
- Extensively used in research: gold standard in shared decision-making research, decision aid trials, and comparative effectiveness studies; enabling synthesis across studies.
- Administration burden: 16 items and 5-10 minutes is longer than quick screening tools (e.g., SURE); may reduce compliance in busy clinical settings or routine practice.
- Cognitive demand: items require reflection on abstract concepts (values, confidence, uncertainty); may be challenging for patients with low health literacy or cognitive impairment.
- Time sensitivity: responses may shift as patients receive information or reflect; administration timing must be carefully documented to ensure comparability across assessments.
- Context-dependent: some items ask about 'pressure from others' or 'knowing what is best for you,' which may be culturally sensitive or difficult to answer accurately in real-time consultations.
- Not an outcome measure: measures decision process (conflict), not decision quality, outcomes, or satisfaction; should be paired with health outcomes or decision quality measures.
Frequently asked
What is a clinically meaningful change on the DCS?
Studies of decision aid interventions show mean improvements of 10-20 points. A change of ≥10-15 points is generally considered clinically significant. For individuals, the threshold varies; some may feel meaningful change at 5-10 points, others at 15-20 points. Context and baseline score matter: improvement from 70 to 55 is meaningful; improvement from 20 to 15 may not be.
Can I use just one or two subscales instead of all five?
The DCS is designed and validated as a five-subscale measure. Using only a subset (e.g., just 'Informed') reduces reliability and validity. If you need a shorter measure, use the SURE Test (4 items) instead. If you need specific subscale focus, administer full DCS and examine subscale scores.
What if a patient refuses to complete the DCS because it's too long?
Use the SURE Test (4 items, 1 minute) for rapid screening. If more detail is needed for research, consider explaining the importance, offering a digital version on tablet, or shortening the timeframe by conducting interview-style administration with the clinician reading items aloud.
How do I adapt the DCS for a specific decision not covered in studies?
The DCS is generic and applies to most healthcare decisions. For specialized decisions (experimental treatments, rare conditions), administer the standard DCS but validate the instrument in your population if possible. Monitor subscale patterns to understand if conflict sources differ from typical decisions.
Should I calculate subscale scores or just use the total score?
Both are valid. Total score is most often used in research to evaluate overall intervention impact. Subscale scores are valuable clinically to diagnose the source of conflict and guide support (e.g., high 'Values' subscale suggests values clarification work). Report both for comprehensive understanding.
Sources
- O'Connor, A. M. (1995). Validation of a decisional conflict scale. Medical Decision Making, 15(1), 25-30. DOI: 10.1177/0272989X9501500105 ↗
- O'Connor, A. M. (2008). User Manual – Decisional Conflict Scale. University of Ottawa. link ↗
How to cite this page
ScholarGate. (2026, June 3). Decisional Conflict Scale (DCS). ScholarGate. https://scholargate.app/en/patient-centered-care/decisional-conflict-scale
Which method?
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