Psychometric testing of Korean versions of self-efficacy and outcome expectations for restorative care activities scales

This study aimed to examine the validity and reliability of Korean versions of the Nursing Assistant Self-Efficacy for Restorative Care Scale, and the Nursing Assistant Outcome Expectations for Restorative Care Scale. Psychometric testing was performed with 697 direct care workers in long-term care facilities in South Korea. Data were analyzed using SPSS/WIN 21.0, AMOS 22.0, and WINSTEPS 3.68.2. There was evidence for content validity. Factor loading in the Korean versions of the Nursing Assistant Self-Efficacy for Restorative Care Scale was 0.66-0.94, and Nursing Assistant Outcome Expectations for Restorative Care Scale was 0.43-0.77. Scores on the Korean versions of the Nursing Assistant Outcome Expectations for Restorative Care Scale correlated positively with scores on a scale of knowledge of restorative care. Additionally, Rasch model analysis of the K-NASERC and K-NAOERC indicates acceptable item data fit. These results indicated that the Korean versions of the Nursing Assistant Self-Efficacy, and Outcome Expectations for Restorative Care Scale are satisfactorily valid and reliable for the measurement.