Skills of Health-Workers in Providing a Self-Care Program for Pre-Diabetic Individuals; Psychometrics of a Questionnaire

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.

The questionnaire items were first developed, utilizing reliable and specialized sources involving papers and scientific books and interviews with experts and specialists in diabetes and health education. The questionnaire psychometric properties were evaluated utilizing face validity, content validity, construct validity, internal consistency, and stability. 

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 exploratory factor analysis revealed four factors involving self-efficacy, attitude, reinforcing factors, and enabling factors. These four factors explained 57.51% of the total variance of the test. The results of the confirmatory factor analysis also confirmed the factors of the PRECEDE-PROCEED model. Cronbach alpha and intra-cluster correlation index for questionnaire structures ranged from 0.87-0.88 and 0.87-0.88, respectively.

The designed questionnaire has good validity and reliability. It can be said that this questionnaire is a suitable and usable tool for prediabetes in similar research to evaluate health worker skills in obtaining a self-care program for prediabetes.