Psychometric characteristics of the multidimensional scale of perceived social support in ostomy patients and their caregivers.

Despite the importance of social support in ostomy care, the Multidimensional Scale of Perceived Social Support (MSPSS) does not appear to be validated in the context of ostomy care. This study evaluated the psychometric characteristics of MSPSS in ostomy patients and their informal caregivers. The MSPSS was tested in a sample of 775 participants with confirmatory factor analysis. Internal consistency reliability was assessed with the ordinal Omega coefficient. Criterion-related validity was ascertained via hypothesis testing by correlating the scores of the MSPSS with other measures. MSPSS for patients and caregivers has a three-factor structure with a good fit. Internal consistency reliability of the factors was excellent. Concurrent validity was supported by the negative correlations between MSPSS scores with depression and stoma-related QoL, and the positive correlations with perceived mutuality. Our research indicates that the MSPSS is a sound measure of social support for ostomy patients and their caregivers.