en <div style=text-align: justify;><strong>Aims:</strong> This research aimed at designing and psychometric properties of a questionnaire for health-worker skills evaluation to obtain a self-care program for pre-diabetic patients.<br> <strong>Instrument & Methods:</strong> The questionnaire's psychometric properties were evaluated utilizing face validity by 15 health workers, content validity was evaluated by ten experts (5 health education and health promotion experts, three diabetes experts, and two general practitioners), and construct validity, internal consistency, and stability were assessed by 400 health workers who were randomly selected. <br> <strong>Findings:</strong> Due to the results of investigating the texts and interviews, the initial questionnaire, including 54 phrases, was presented. In the face validity section, eight expressions were removed quantitatively. Then, in identifying content validity, three other words were deleted, and the questionnaire was reduced to 43 phrases in general. This questionnaire's exploratory factor analysis revealed four factors: self-efficacy, attitude, reinforcing factors, and enabling factors. These four factors explained 57.51% of the total variance of the test. The confirmatory factor analysis results also confirmed the factors of the PRECEDE-PROCEED model. Cronbach's alpha and intra-cluster correlation index for questionnaire structures ranged from 0.87-0.88 and 0.87-0.88, respectively.<br> <strong>Conclusion: </strong>The designed questionnaire has good validity and reliability.</div> Psychometrics,Health-Workers,Empowerment,Self-Care,Prediabetes, 395 402 http://hehp.modares.ac.ir/browse.php?a_code=A-10-62947-1&slc_lang=en&sid=4 M. Ghasemi mahmoudghasemi@modares.ac.ir 1003194753284600229541 1003194753284600229541 No Department of Health Education & Health Promotion, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran F. Ghofranipour 1003194753284600229542 1003194753284600229542 No Department of Health Education & Health Promotion, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran H.S. Shahbazi h.shahbazi@modares.ac.ir 1003194753284600229543 1003194753284600229543 Yes Department of Health Education & Health Promotion, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran F. Aminshokravi 1003194753284600229544 1003194753284600229544 No Department of Health Education & Health Promotion, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran