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Browsing by Subject "psychometric properties"
Item Investigating the reliability and validity of the Dutch versions of the illness management and recovery scales among clients with mental disorders(Taylor & Francis, 2016) Goossens, Peter J. J.; Beentjes, Titus A. A.; Knol, Suzanne; Salyers, Michelle P.; de Vries, Sjoerd J.; Department of Psychology, School of ScienceBackground: The Illness Management and Recovery scales (IMRS) can measure the progress of clients’ illness self-management and recovery. Previous studies have examined the psychometric properties of the IMRS. Aims: This study examined the reliability and validity of the Dutch version of the IMRS. Method: Clients (n = 111) and clinicians (n = 40) completed the client and clinician versions of the IMRS, respectively. The scales were administered again 2 weeks later to assess stability over time. Validity was assessed with the Utrecht Coping List (UCL), Dutch Empowerment Scale (DES), and Brief Symptom Inventory (BSI). Results: The client and clinician versions of the IMRS had moderate internal reliability, with α = 0.69 and 0.71, respectively. The scales showed strong test–retest reliability, r = 0.79, for the client version and r = 0.86 for the clinician version. Correlations between client and clinician versions ranged from r = 0.37 to 0.69 for the total and subscales. We also found relationships in expected directions between the client IMRS and UCL, DES and BSI, which supports validity of the Dutch version of the IMRS. Conclusions: The Dutch version of the IMRS demonstrated good reliability and validity. The IMRS could be useful for Dutch-speaking programs interested in evaluating client progress on illness self-management and recovery.Item The multidimensional kidney transplant self-management scale : development and psychometric testing(2018-04-03) Chung, Shu-Yu; Hacker, Eileen; Jones, Josette; Ellis, Rebecca Bartlett; Rawl, Susan; Bakas, TamilynPoor long-term kidney transplant outcomes are a significant problem in the U.S. Interventions must focus on preserving allograft function by managing modifiable risk factors. An instrument capable of identifying problems with post-kidney transplant self-management behaviors may enable the design and testing of self-management interventions. This study’s purpose was to test the psychometric properties of the new Kidney Transplant Self-Management Scale (KT–SM). The Zimmerman framework adapted for kidney transplant self-management guided the cross-sectional study. A total of 153 kidney recipients recruited from Facebook® completed the Self-Efficacy for Managing Chronic Disease (SEMCD), Patient Activation Measure (PAM), Kidney Transplant Questionnaire (KTQ), and KT–SM Scale instruments via a REDCap® survey. Most participants were female (65%), White (81.7%), and middle-aged (M = 46.7; SD = 12.4 years) with a history of dialysis (73%) and received a kidney transplant an average of 6.58 years previous (SD = 6.7). Exploratory factor analysis results supported the 16-item KT–SM Scale as a multidimensional scale with five domains with loadings ranging between .39 and .89: medication adherence, protecting kidney, cardiovascular risk reduction, ownership, and skin cancer prevention. Internal consistency reliability for the total scale (Cronbach’s α = .84) and five domains ranged from .71 to .83. The total and domains were positively correlated, ranging from r = .51 to .76, p = .01. Criterion-related validity was evidenced by significant correlations of KT–SM and domains with SEMCD (r =.22 to .53, p = .01), PAM (r = .31 to .52, p = .01), and the overall KTQ (r = .20 to .32, p = .01) except for one KT–SM domain: protecting kidney. Construct validity was evaluated using multivariate regression analysis. The linear combination of age, patient activation, and self-efficacy explained 45% of the variance in KT–SM behaviors; 47% of the variance in KTQ (measuring quality of life) was predicted by age, comorbidity, and self-efficacy. These findings provide beginning evidence of reliability and validity for the newly developed KT–SM scale. Instruments like this may provide a means to capture the self-management behaviors of the kidney transplant population, which is critical for future work on interventions.