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Psychometric evaluation of the Shared Decision-Making Instrument--Revised.
Jacqueline A Bartlett1, Jane A Peterson
1Children's Mercy Hospitals and Clinics, 2401 Gillham Road, Kansas City, MO 64108, USA. jbartlett@cmh.edu
The Shared Decision-Making Inventory-Revised (SDMI-R) demonstrates strong reliability for assessing school nurses' knowledge, attitudes, self-efficacy, and intent regarding human papillomavirus (HPV) vaccination discussions.
Area of Science:
- Health education
- Psychometrics
- Vaccine communication
Background:
- Effective communication is crucial for human papillomavirus (HPV) vaccination uptake.
- School nurses play a key role in discussing HPV disease and vaccination with clients.
- Validated instruments are needed to assess healthcare providers' readiness for shared decision-making.
Purpose of the Study:
- To evaluate the psychometric properties of the Shared Decision-Making Inventory-Revised (SDMI-R).
- To assess the SDMI-R's ability to measure knowledge, attitudes, self-efficacy, and intent related to HPV vaccine discussions.
- To determine the reliability and validity of the SDMI-R for use with school nurses.
Main Methods:
- The SDMI-R was administered to a sample of 1,525 school nurses.
- Internal reliability was assessed using Cronbach's alpha.
- Exploratory factor analysis was conducted to examine the instrument's structure.
Main Results:
- The SDMI-R demonstrated satisfactory reliability for the total instrument (α = .874) and key subscales (Attitude: .828, Self-Efficacy: .917, Intent: .891).
- Correlational analyses indicated moderate to strong correlations, supporting adequate internal reliability.
- Exploratory factor analysis identified five components explaining 75.96% of the variance.
Conclusions:
- The SDMI-R is a reliable and valid instrument for measuring school nurses' readiness for shared decision-making regarding HPV vaccination.
- Findings support the use of the SDMI-R to enhance HPV vaccine communication strategies.
- Further research can explore the SDMI-R's application in diverse clinical settings.