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Design and Implementation Content Validity Study: Development of an instrument for measuring Patient-Centered
Vahid Zamanzadeh1, Akram Ghahramanian1, Maryam Rassouli2
1Department of Medical-Surgical Nursing, Faculty of Nursing and Midwifery, Tabriz University of Medical Sciences, Tabriz, Iran.
This study details the content validity of a new patient-centered communication instrument. The instrument demonstrated acceptable content validity indices, crucial for reliable psychometric evaluation.
Area of Science:
- Psychometrics
- Health Communication Research
Background:
- Content validity is essential for instrument psychometric properties and reliability.
- Establishing content validity is a critical step in developing measurement instruments.
- This article provides an overview of the content validity process and its complexities.
Purpose of the Study:
- To examine the content validity of a patient-centered communication instrument.
- To illustrate the process and outcomes of content validity assessment.
- To outline acceptable content validity indices for a new instrument.
Main Methods:
- A two-step methodological study was conducted.
- The process involved domain determination, item generation, instrument formation, and expert judgment.
- Content validity ratio, content validity index, and modified kappa statistic were calculated.
Main Results:
- Seven dimensions of patient-centered communication were identified: trust building, informational support, emotional support, problem solving, patient activation, intimacy/friendship, and spirituality strengthening.
- The instrument demonstrated an appropriate level of content validity.
- While the universal agreement approach yielded a low content validity index, the average approach showed a high score (0.93), justifiable by the large expert panel.
Conclusions:
- The study established acceptable content validity indices for the new patient-centered communication instrument.
- The findings contribute to the design and psychometric evaluation of communication measurement tools.
- This research highlights the importance of rigorous content validation in instrument development.
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