Psychometric evaluation of the Multi-Dimensional Scale of Perceived Social Support in young adults with chronic health conditions.

INTRODUCTION: The Multi-Dimensional Scale of Perceived Social Support (MSPSS) is one of the most widely employed tools for measuring perceived social support from three sources: family, friends and a significant other. This study aimed to establish the factor structure of the MSPSS in young adults living with chronic health conditions (CHCs). It also aimed to examine the reliability and convergent validity of the tool. METHODS: A cross-sectional quantitative design was applied. Participants (n = 123, 90 females) were students aged 18-25 years recruited from Colleges of Further Education in Ireland (mean age of 20.1 years, s.d. = 2.43). Participants completed the MSPSS and two subscales of the Medical Outcomes Study 36-item Short Form Health Survey that assessed social functioning and emotional well-being. RESULTS: Exploratory factor analysis yielded a three-factor solution of the MSPSS in young adults living with CHCs. The three factors together explained 83% of the variance in MSPSS scores. All the items had high loadings on the factors (0.72-0.94). The MSPSS showed satisfactory reliability and convergent validity. CONCLUSIONS: These findings suggest that the MSPSS is a valid and reliable tool for measuring perceived social support from three sources in young adults living with CHCs. Social support has been associated with positive outcomes in young adults living with CHCs, thus it is imperative for researchers and clinicians to have access to psychometrically sound instruments to evaluate the construct.

Validation and psychometric evaluation of a brief screening questionnaire for psychological distress in patients with psoriasis.

BACKGROUND: Patients with psoriasis are at risk of a co-morbid diagnosis of depression and/or anxiety. It is therefore essential for dermatologists to have valid and effective instruments that can screen and monitor depression and anxiety symptoms in psoriasis patients. OBJECTIVE: The aim of this study was to validate the Mental Health Inventory (MHI-5) as a brief measure that can be used to evaluate psychological distress related to anxiety and depression in psoriasis patients. METHODS: The sample included 76 adult dermatological outpatients diagnosed with psoriasis. Participants completed the MHI-5, the Hospital Anxiety and Depression Scale (HADS) and six subscales of the Self-Compassion Scale (SCS). Confirmatory factor analysis (CFA) was applied to examine the factor structure of MHI-5. Convergent validity was examined by applying correlations among all measures. Discriminant validity was examined by applying hierarchical regression models. Reliability was examined by calculating Cronbach's alpha coefficient. RESULTS: Confirmatory factor analysis showed that the proposed one-factor model has a good fit to the data. The MHI-5 demonstrated satisfactory convergent validity by yielding significant moderate to strong correlations with the HADS and with the positive and negative subscales of the SCS. Discriminant validity was also evident with being at risk of anxiety predicting MHI-5 scores above and beyond the effect of gender and age. Hierarchical regressions were not performed because a very small number of participants (n = 3) were classified at risk of depression. The MHI-5 showed high internal consistency (α = 0.84). CONCLUSION: This investigation provided evidence that MHI-5 is a reliable and valid instrument that can be used to effectively capture psychological distress in psoriasis patients.