Yao Gui Y, Xu Peng K, Luo Yan Y, Sun Jun J, Guo Hua, Zhang Wen J, Wu Yi H, Wang He J, Liu Kai L
School of Nursing, Xin Xiang Medical University, Xinxiang, China.
The fourth affiliated hospital of Xin Xiang Medical University, Xinxiang, China.
J Eval Clin Pract. 2025 Apr;31(3):e14153. doi: 10.1111/jep.14153. Epub 2024 Oct 13.
RATIONALE, AIMS, AND OBJECTIVES: The Perceptions of Palliative Care Instrument (PPCI) is a tool used to access perceptions towards palliative care in patients with advanced cancer. However, its psychometric properties have not been widely tested using modern psychometric methods. This study aimed to examine the psychometric properties of the PPCI in patients with advanced cancer using Rasch analysis.
Four hundred and forty four Participants were recruited from the Department of Medical Oncology at a tertiary care hospital in Xinxiang City, Henan Province, China, between October 2020 and February 2021. Participants completed the PPCI. Rasch analysis procedures were conducted, including assessment of unidimensionality, model-date fit, rating scale function, differential item functioning, item-person map, and person and item reliability.
The unidimensionality of the PPCI was confirmed, although two items (18 and 21) did not fit the Rasch model. The degree of fit of each item to its respective dimension was excellent, with Infit MNSQ and Outfit MNSQ values ranging from 0.73 to 1.33. The PPCI demonstrated high reliability, with an item reliability of 0.99 and a person reliability of 0.77.
The PPCI is a valid and reliable instrument for assessing perceptions of palliative care in advanced cancer patients. However, to further improve the quality and applicability of the PPCI, the deletion of items 18 and 21 is recommended, as they did not fit the Rasch model.
原理、目的和目标：姑息治疗认知量表（PPCI）是一种用于了解晚期癌症患者对姑息治疗看法的工具。然而，其心理测量特性尚未使用现代心理测量方法进行广泛测试。本研究旨在通过Rasch分析检验PPCI在晚期癌症患者中的心理测量特性。
2020年10月至2021年2月期间，从中国河南省新乡市一家三级医院的肿瘤内科招募了444名参与者。参与者完成了PPCI。进行了Rasch分析程序，包括单维度性评估、模型-数据拟合、评分量表功能、项目差异功能、项目-人映射以及人和项目的可靠性。
尽管有两个项目（18和21）不符合Rasch模型，但PPCI的单维度性得到了证实。每个项目与其各自维度的拟合度极佳，Infit MNSQ和Outfit MNSQ值范围为0.73至1.33。PPCI显示出高可靠性，项目可靠性为0.99，个人可靠性为0.77。
PPCI是评估晚期癌症患者对姑息治疗看法的有效且可靠的工具。然而，为了进一步提高PPCI的质量和适用性，建议删除项目18和21，因为它们不符合Rasch模型。
