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- Title
Measuring diabetes self-care: a psychometric analysis of the Self-Care Inventory-Revised with adults.
- Authors
Weinger K; Butler HA; Welch GW; La Greca AM; Weinger, Katie; Butler, Heather A; Welch, Garry W; La Greca, Annette M
- Abstract
<bold>Objective: </bold>To examine psychometric properties of the Self-Care Inventory-revised (SCI-R), a self-report measure of perceived adherence to diabetes self-care recommendations, among adults with diabetes.<bold>Research Design and Methods: </bold>We used three data sets of adult type 1 and type 2 diabetic patients to examine psychometric properties of the SCI-R. Principal component and factor analyses examined whether a general factor or common factors were present. Associations with measures of theoretically related concepts were examined to assess SCI-R concurrent and convergent validity. Internal reliability coefficients were calculated. Responsiveness was assessed using paired t tests, effect size, and Guyatt's statistic for type 1 patients who completed psychoeducation.<bold>Results: </bold>Principal component and factor analyses identified a general factor but no consistent common factors. Internal consistency of the SCI-R was alpha = 0.87. Correlation with a measure of frequency of diabetes self-care behaviors was r = 0.63, providing evidence for SCI-R concurrent validity. The SCI-R correlated with diabetes-related distress (r = -0.36), self-esteem (r = 0.25), self-efficacy (r = 0.47), depression (r = -0.22), anxiety (r = -0.24), and HbA(1c) (r = -0.37), supporting construct validity. Responsiveness analyses showed SCI-R scores improved with diabetes psychoeducation with a medium effect size of 0.62 and a Guyatt's statistic of 0.85.<bold>Conclusions: </bold>The SCI-R is a brief, psychometrically sound measure of perceptions of adherence to recommended diabetes self-care behaviors of adults with type 1 or type 2 diabetes.
- Publication
Diabetes Care, 2005, Vol 28, Issue 6, p1346
- ISSN
0149-5992
- Publication type
journal article
- DOI
10.2337/diacare.28.6.1346