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Psychometric validation of the Ostomy Skin Tool 2.0
Gregor Jemec1, Nana Overgaard Herschend2, Helle Doré Hansen2
1Department of Dermatology, Roskilde Hospital, Roskilde, Denmark.
Peerj
|December 22, 2023
Summary
A new ostomy skin tool (OST 2.0) reliably and validly assesses peristomal skin complications (PSCs), simplifying regular skin checks for ostomy patients and aiding early intervention.
Area of Science:
- Ostomy care
- Dermatology
- Medical device validation
Background:
- Peristomal skin complications (PSCs) are a significant challenge for individuals with ostomies.
- Regular monitoring and professional consultation are crucial for managing PSCs and preventing severity.
Purpose of the Study:
- To validate the Ostomy Skin Tool 2.0 (OST 2.0) for easier and regular assessment of peristomal skin.
- To ensure the tool effectively captures both visible and non-visible peristomal skin issues.
Main Methods:
- Psychometric validation of the OST 2.0 using data from seventy clinical trial subjects.
- Methods included item-level and inter-item correlations, convergent validity, and test-retest reliability.
- Anchor- and distribution-based methods assessed meaningful change, with cognitive debriefing ensuring patient relevance.
Main Results:
- The OST 2.0 was finalized, incorporating six patient-reported outcome items and automated assessment of discolored peristomal areas.
- Cognitive debriefing confirmed the relevance of the tool's concepts to ostomy patients.
Conclusions:
- The OST 2.0 provides reliable and valid evidence for measuring peristomal skin complications.
- It serves as a valuable outcome measure for both visible and non-visible PSCs in ostomy care.
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An ostomy is a surgical procedure that creates an artificial opening from the intestines to the outside of the body, allowing for the rerouting of effluent. This opening is known as a stoma. A stoma usually protrudes above the skin surface, appearing pink or red, moist, and round, and it lacks nerve sensations.
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