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Development and psychometric testing of a theory-based tool to measure self-care in diabetes patients: the self-care of diabetes inventory
Ausili, Davide Barbaranelli, Claudio Rossi, Emanuela Rebora, Paola Fabrizi, Diletta Coghi, Chiara Luciani, Michela Vellone, Ercole Di Mauro, Stefania Riegel, Barbara
Ausili, Davide
Barbaranelli, Claudio
Rossi, Emanuela
Rebora, Paola
Fabrizi, Diletta
Coghi, Chiara
Luciani, Michela
Vellone, Ercole
Di Mauro, Stefania
Riegel, Barbara
Abstract
Background:Self-care is essential for patients with diabetes mellitus. Both clinicians and researchers must be ableto assess the quality of that self-care. Available tools have various limitations and none are theoretically based. Theaims of this study were to develop and to test the psychometric properties of a new instrument based on themiddle range-theory of self-care of chronic illness: the Self-Care of Diabetes Inventory (SCODI).Methods:Forty SCODI items (5 point Likert type scale) were developed based on clinical recommendations andgrouped into 4 dimensions: self-care maintenance, self-care monitoring, self-care management and self-careconfidence based on the theory. Content validity was assessed by a multidisciplinary panel of experts. A multi-centre cross-sectional study was conducted in a consecutive sample of 200 type 1 and type 2 diabetes patients.Dimensionality was evaluated by exploratory factor analyses. Multidimensional model based reliability wasestimated for each scale. Multiple regression models estimating associations between SCODI scores and glycatedhaemoglobin (HbA1c), body mass index, and diabetes complications, were used for construct validity.Results:Content validity ratio was 100%. A multidimensional structure emerged for the 4 scales. Multidimensionalmodel-based reliabilities were between 0.81 (maintenance) and 0.89 (confidence). Significant associations were foundbetween self-care maintenance and HbA1c (p= 0.02) and between self-care monitoring and diabetes complications(p= 0.04). Self-care management was associated with BMI (p= 0.004) and diabetes complications (p=0.03).Self-careconfidence was a significant predictor of self-care maintenance, monitoring and management (allp < 0.0001).Conclusion:The SCODI is a valid and reliable theoretically-grounded tool to measure self-care in type 1 andtype 2 DM patients.
Keywords
Date
2017
Type
Journal article
Journal
BMC Endocrine Disorders
Book
Volume
17
Issue
66
Page Range
1-12
Article Number
ACU Department
Mary MacKillop Institute for Health Research
Faculty of Health Sciences
Faculty of Health Sciences
Collections
Relation URI
Source URL
Event URL
Open Access Status
Open access
License
CC BY-NC 4.0
File Access
Open