Psychometrics of the self-efficacy instrument of clean intermittent urinary catheterization in patients with neural bladder admitted to rehabilitation hospitals in Tehran in 2019

Background: The incidence of neural bladder is increasing today and these people need catheterization. Intermittent clean urinary catheterization is a low-risk method for the patients. Materials and methods: This was a descriptive methodological and validation research. For content validity, 10 people were selected by purposive method. For face validity, 25 people were chosen by convenience method Aimed at structural validity, gradual method was used from sounding conductors. For the reliability of the questionnaire, 10 people completed the questionnaire. Results: First, a draft was developed and two qualitative and quantitative methods were used for face validity. The effect scores of the items were not less than 1.5. None of the items less than 62% were deleted according to the table. In construct validity, exploratory factor analysis and varimax rotation methods were used and the adequacy of sample size was 0.78 by KMO test, and the results of Bartlett sphericity test were significant (4017/486 p <0.001). 5 items with a share of less than 0.4 were removed and factor analysis was performed again and the number of factors was reduced to four with a variance of 40.136. The results of internal consistency of Cronbach's alpha coefficient of the whole questionnaire with 32 items were equal to 0.862 and 0.859 for women and men respectively. The results of the stability of the verification tools and the result of the ICC test (0.949) showed a good correlation coefficient for each structure. Conclusion: The tools designed in this study are valid and reliable and can be used in various studies.