Development and psychometric testing of a theory-based tool to measure self-care in diabetes patients: the Self-Care of Diabetes Inventory

BMC Endocrine Disorders

Diletta Fabrizi¹  Chiara Coghi²  Emanuela Rossi³  Paola Rebora³  Ercole Vellone⁴  Stefania Di Mauro⁵  Davide Ausili⁵  Michela Luciani⁵  Claudio Barbaranelli⁶  Barbara Riegel⁷ 

[1] ASST Niguarda;ASST Vimercate;Centre of Biostatistics for Clinical Epidemiology, Department of Medicine and Surgery, University of Milan-Bicocca;Department of Biomedicine and Prevention, University of Rome Tor Vergata;Department of Medicine and Surgery, University of Milan-Bicocca;Department of Psychology, University La Sapienza;University of Pennsylvania;

关键词: Self-care;    Self-efficacy;    Diabetes mellitus;    Psychometric testing;    Middle range theory;    Chronic disease;   

DOI  :  10.1186/s12902-017-0218-y

来源: DOAJ

【 摘 要 】

Abstract Background Self-care is essential for patients with diabetes mellitus. Both clinicians and researchers must be able to assess the quality of that self-care. Available tools have various limitations and none are theoretically based. The aims of this study were to develop and to test the psychometric properties of a new instrument based on the middle 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 and grouped into 4 dimensions: self-care maintenance, self-care monitoring, self-care management and self-care confidence 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 was estimated for each scale. Multiple regression models estimating associations between SCODI scores and glycated haemoglobin (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. Multidimensional model-based reliabilities were between 0.81 (maintenance) and 0.89 (confidence). Significant associations were found between 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-care confidence was a significant predictor of self-care maintenance, monitoring and management (all p < 0.0001). Conclusion The SCODI is a valid and reliable theoretically-grounded tool to measure self-care in type 1 and type 2 DM patients.

【 授权许可】

Unknown