The Psychometric Properties of the Turkish Version of the Ostomy Self-Care Index and the Caregiver Contribution to Self-Care in Ostomy Patient Index

Background: Living with an ostomy is a chronic condition, and self-care in such cases improves patient outcomes. Purpose: To adapt and test the psychometric properties of the Turkish version of the Ostomy Self-Care Index (TOSCI) and the Turkish version of the Caregiver Contribution to Self-Care in Ostomy Patient Index (T-CC-OSCI). Methods: A psychometric study was conducted on a convenience sample of 202 adult patients with an ostomy and their 165 caregivers. Translation and back translation, face and content validity, construct validation, and reliability assessment of the T-OSCI and the T-CC-OSCI were performed. Exploratory factor analysis was used to evaluate the construct validity. Reliability was established using Cronbach alpha coefficients, ceiling and floor effects, and the Hotelling T2 test, Wilcoxon signed rank test, and intraclass correlation coefficient. Results: Content validity values were in the range of 0.85 to 1 for both the T-OSCI and the T-CC-OSCI. Exploratory factor analysis demonstrated generally acceptable factor loadings. The overall index revealed a high level of internal consistency (T-OSCI = 0.968, T-CCOSCI = 0.862). No statistically significant difference was found between test-retest measurements. There was no indication of either ceiling or floor effects, or response bias. Conclusion: The T-OSCI and the T-CC-OSCI are valid and reliable indexes to measure the self-care of patients with an ostomy and their caregivers. These indexes may allow health care professionals to evaluate self-care in research and clinical settings, identify educational needs, and collaborate in developing and supporting appropriate self-care initiatives for patients with an ostomy and their caregivers.