Rasch analysis of a palliative care self-efficacy instrument for nursing assistants

This study used Rasch models to evaluate the psychometric properties of a self-efficacy instrument focused on psychosocial aspects of palliative care developed for nursing assistants (NAs). NAs from 6 skilled nursing facilities in Illinois, U.S. (n=102) were divided into intervention and control groups and answered 16 questions at baseline and 1-month follow-up. A total of 84 NAs completed assessments at both times. The rating scale structure improved when 3 instead of 5 response categories were used. After removing 4 items, the instrument demonstrated unidimensionality and local independence. A person-item threshold map indicated a ceiling effect. For the intervention group, 2 items and 1 item became easier and more difficult respectively post-training. With adjustments, the 12-item instrument became an adequate measure of palliative care self-efficacy. By using PCSE-NA as a tool to assess palliative care self-efficacy of NAs, geriatric nurses can identify weaknesses of and ways to improve training for NAs. (c) 2024 Elsevier Inc. All rights are reserved, including those for text and data mining, AI training, and similar technologies.