Abstract
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.
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