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Validation of the SDM Process Scale to Evaluate Shared Decision-Making at Clinical Sites
Floyd J Fowler1, Karen R Sepucha2,3, Vickie Stringfellow4
1Center for Survey Research, University of Massachusetts Boston, Boston, USA.
The Shared Decision-Making (SDM) Process scale reliably measures patient involvement in surgical decisions. Higher scores were observed at sites using decision aids, validating the scale for clinical use.
Area of Science:
- Health Services Research
- Patient-Centered Care
Background:
- Shared decision-making (SDM) is crucial for patient-centered surgical care.
- Validating measurement tools is essential for assessing SDM implementation in clinical settings.
Purpose of the Study:
- To assess the reliability and validity of the Shared Decision-Making (SDM) Process scale.
- To evaluate SDM levels in surgical patients across different clinical sites.
Main Methods:
- Utilized mail surveys from patients undergoing surgery at 9 clinical sites and a national web survey.
- Assessed scale reliability using intra-class correlation and validity through comparisons between sites using decision aids and usual care.
Main Results:
- The SDM Process scale demonstrated strong reliability (ICC=0.93).
- Patients at sites using decision aids reported significantly higher SDM scores compared to national samples and usual care sites.
- The scale showed good validity in assessing SDM for surgical decisions.
Conclusions:
- The SDM Process scale is a reliable and valid instrument for measuring SDM in surgical decision-making.
- Decision aids appear to enhance SDM in clinical practice.
- The scale can be used to assess SDM at clinical sites for various surgeries.
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