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Development of a self-efficacy questionnaire, ‘Insulin Therapy Self-efficacy Scale (ITSS)’, for insulin users in Japanese: The Self-Efficacy-Q study
- Source :
- Journal of Diabetes Investigation, Vol 10, Iss 2, Pp 358-366 (2019), Journal of Diabetes Investigation
- Publication Year :
- 2018
- Publisher :
- Wiley, 2018.
-
Abstract
- Aims/Introduction Although patient self‐efficacy is known to affect adherence to therapy, no available tool measures self‐efficacy of insulin therapy administration while addressing the entire therapeutic process and management. In light of this, we developed the ‘Insulin Therapy Self‐efficacy Scale (ITSS).’ Materials and Methods Development of the ITSS involved three phases: (i) item generation and creation of a questionnaire draft; (ii) testing and correcting the items through interviews with patients; and (iii) a multicenter, single‐arm study to validate the questionnaire. Results A factor analysis and Cronbach's α both confirmed good internal consistency in the patients’ confidence regarding the following four factors: the insulin injection procedure, insulin titration, glycemic control and ability to cope with hypoglycemia. Reproducibility was confirmed using weighted κ statistics and intraclass correlations. Good concurrent validity was confirmed with two other questionnaires. The ITSS score was also found to correlate with several patient characteristics and clinical parameters, as well as with a better adherence to injected insulin therapy 6 months later, suggesting the predictive validity of this scale. Conclusions The ITSS is a reliable and valid tool for assessing and quantifying patients’ self‐efficacy. The ITSS estimation of self‐efficacy can predict a patient's glycemic control and future adherence to insulin therapy. These characteristics will ensure the usefulness of the ITSS in ensuring a successful therapeutic process for patients and physicians.
- Subjects :
- Adult
Blood Glucose
Male
Predictive validity
medicine.medical_specialty
Psychometrics
Epidemiology
Endocrinology, Diabetes and Metabolism
medicine.medical_treatment
Concurrent validity
030209 endocrinology & metabolism
Hypoglycemia
Diseases of the endocrine glands. Clinical endocrinology
03 medical and health sciences
0302 clinical medicine
Cronbach's alpha
Surveys and Questionnaires
Diabetes mellitus
Internal Medicine
medicine
Humans
Hypoglycemic Agents
Insulin
030212 general & internal medicine
Aged
Glycemic
Glycated Hemoglobin
Self-efficacy
business.industry
Insulin Therapy Self‐efficacy Scale (ITSS)
Articles
General Medicine
Middle Aged
Prognosis
RC648-665
medicine.disease
Self Efficacy
Diabetes Mellitus, Type 1
Diabetes Mellitus, Type 2
Physical therapy
Insulin therapy
Female
Original Article
business
Biomarkers
Follow-Up Studies
Self‐efficacy
Subjects
Details
- ISSN :
- 20401116
- Volume :
- 10
- Database :
- OpenAIRE
- Journal :
- Journal of Diabetes Investigation
- Accession number :
- edsair.doi.dedup.....9838f6bfcf10675341c167fc4ca3d6f2