J Korean Crit Care Nurs.  2022 Oct;15(3):37-50. 10.34250/jkccn.2022.15.3.37.

Item analysis of the Korean version of the Intensive Care Experience Questionnaire: Using the Rasch Model based on Item Response Theory

Affiliations
  • 1Professor, College of Nursing, Dong-A University
  • 2Staff Nurse, Neonatal Intensive Care Unit, Dong-A University Medical Center

Abstract

Purpose
: This study aimed to examine the item characteristics of the Korean version of the intensive care experience questionnaire (K-ICEQ) using the Rasch analysis model of the item response theory.
Methods
: In this methodological study, the validity of the scale was examined, and a secondary analysis was conducted using cohort data of patients who were discharged from the intensive care units (ICU). Data from 891 patients who responded to the K-ICEQ upon ICU discharge were analyzed. The WINSTEP program was used to analyze item characteristics, including item difficulty, fit indices, appropriateness scale, and separation reliability.
Results
: The difficulty level of all 26 items of the K-ICEQ was appropriate, and the fit indices of the 25 items, except for item 18, were good. The 5-point scale of the K-ICEQ was not appropriate in the three subscales. The item separation reliability was good in all subscales, but did not meet the criteria in terms of respondents.
Conclusion
: The results of examining the item characteristics of the K-ICEQ revealed a good degree of difficulty, fitness, and item separation reliability. To increase the validity of the K-ICEQ, we suggest the rearrangement of the overall item order, modification of the item description of the “recall of experience” subscale, and reduction of the scale response level.

Keyword

Intensive Care Units; Patients; Reproducibility of Results; Surveys and Questionnaires; 중환자실; 환자; 재현성; 설문조사와 설문지
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