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E-ISSN : 2148-9696
Crescent Journal of
Medical and Biological Sciences
Apr 2020, Vol 7, Issue 2
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Original Article
Developing a Valid and Reliable Questionnaire of the Stages of Change in Self-management of Patients with Type 2 Diabetes Among an Iranian Population
Maryam Zare1, Maryam Rafraf1, Abdolreza Shaghaghi2, Mohammad Asghari Jafarabadi 3, Ali Tarighat-Esfanjani 1
1 Nutrition Research Center; Faculty of Nutrition and Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
2Health Education and Promotion Department, Faculty of Health, Tabriz University of Medical Sciences, Tabriz, Iran
3Road Traffic Injury Research Center, Tabriz University of Medical Sciences, Tabriz, Iran

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Keywords : Type 2 diabetes mellitus, Surveys, and questionnaires, Self-management, Iran
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Objectives: The present study aimed to develop a valid and reliable questionnaire of the stages of change in self-management of patients with type 2 diabetes mellitus (T2DM).

Materials and Methods: In the first section of this cross-sectional study, stages of change in self-management of patients with T2DM questionnaire were developed by the researcher. The questionnaire consists of 8 questions in the field of using medication, healthy diet, and physical activity. In the second section, the content validity and face validity of the questionnaire were assessed by the opinions of 11 expert panelists in the field of health education and nutritional sciences. Construct validity was carried out by exploratory factor analysis (EFA) among 206 patients with T2DM an outpatient clinic in Ardabil city in the northwest of Iran.

Results: The total content validity index (CVI), content validity ratio (CVR), and face validity was 0.60-0.91, 0.81-1, and 4.32-4.82, respectively. The number of questions increased up to 10. In addition, EFA results showed that Kaiser-Mayer-Olkin (KMO) was 0.69; total variance extracted was 23.6; and Bartlett tests were statistically significant (P=0.000). Reliability analysis indicated a moderate level of internal consistency (ICC = 0.89) and Cronbach"s alpha 0.63.

Conclusion: This questionnaire with 10 items and 1 factor was found to be valid and reliable as a simple and effective tool for self-care on stages of change in patients with T2DM.


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