2025 Volume 45 Pages 351-361
Purpose: Development of a “Self-Diagnosis Scale of Medical Accident Prevention Competency for ICU Nurses” with the aim of ensuring patient safety.
Methods: Identifying ICU nurses’ medical accident prevention behavior through qualitative research, development and scaling of 29 items based on the results of qualitative research, selection of questionnaire items using item response theory, and nationwide mail survey. The scale items were collected individually by anonymous mail.
Results: A total of 907 questionnaires were distributed and 304 valid datasets were analyzed. 15 items were selected using IRT, and a final version scale was produced therefrom. The information content of the scale was more than 9.24, the Cronbach’s alpha was .91, and the contribution to the first component by principal component analysis was 44.02%. Four hypotheses were supported by the known-group technique. The correlation coefficient using the retest method was .50, and the results of the confirmatory factor analysis were CFI = 0.88 and RMSEA = 0.09.
Conclusion: Although in terms of validity, the structural aspect of this scale remains an issue, it contains evidence from multiple facets and can be utilized as a measurement tool.