Tehran University of Medical Sciences Health Technology Assessment in Action 2645-3835 5 2 2021 12 05 99 99 EN Monire Davoodi MSc of Health Services Management, School of Health, Diabetes Research Center, Health Research Institute, Ahvaz Jndishapur University of Medical Sciences, Ahvaz, Iran. Effat Jahanbani Assistant Professor, Department of Health Services Management, School of  Health, Diabetes  Research Center, Health Research Institute,  Ahvaz  Jundishapur University of Medical Sciences, Ahvaz, Iran. Farzad Faraji Khiavi Associate Professor, Department of Health Services Management, School of Health, Diabetes Research Center, Health Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran. Mahdi Nadaf Assistant Professor, Department of Management Economic. Shahid Chamran University of Ahvaz, Ahvaz, Iran. 2021 08 08 2021 10 19   Abstract Subject: The needs and wants of patients as one of the pillars of marketing in the health field required the right tools to identify the consumer's requests. This research was conducted in order to design an appropriate tool based on the 7 Ps model to evaluate the factors affecting the behavior of using services in the customers referring to diabetes units. Methods: The study conducted in three steps. The first steps included definition of the concept, determination of the items, and characteristics of the instrument. In the step of concept definition, through literature review, the items were identified and arranged in the form of a questionnaire. Then, using the opinions of professionals and diabetics, the identified items were reviewed. In the third step, the validity and reliability of the instrument were confirmed using CVI, CVR, ICC and Cronbach's alpha. Results: according to the results of the first and second phase of the study, the initial 46-itmes questionnaire was provided. After determining the formal and content validity quantitatively and qualitatively, statements of the questionnaire decreased to 38.The calculated Cronbach's alpha coefficients (0.89) represents the high internal consistency of the questionnaire. The results of the reliability of the questionnaire were obtained by re-test method (0.92). Conclusion: Using this questionnaire helps researchers to analyze the diabetic patients' behavior and specifies the reasons for acceptance or rejection of the services of the diabetes unit by the patient. It can also be used in all centers providing care services to its diabetic patients https://htainaction.tums.ac.ir/index.php/hta/article/view/99 https://htainaction.tums.ac.ir/index.php/hta/article/download/99/70