School of Nursing, Peking Union Medical College, 33 Ba Da Chu Rd. Beijing, 100144, China.
School of Nursing and Midwifery, The Aga Khan University, Stadium Road, Karachi 7400, Pakistan.
Asian J Psychiatr. 2020 Apr;50:101972. doi: 10.1016/j.ajp.2020.101972. Epub 2020 Feb 11.
Illness perceptions have been associated with patients' reactions to health threats and further health outcomes. The Illness Perception Questionnaire for Schizophrenia (IPQS) has been applied in different contexts. However, the validity and reliability of IPQS remain unknown in mainland China.
To test the psychometric properties of the Chinese version of IPQS in mainland China.
A cross-sectional survey.
A total of 200 community-dwelling patients with schizophrenia were surveyed in Beijing, China. The validity and reliability of the instrument were tested. As well as demographic data, the IPQS and the Knowledge About Schizophrenia Test (KAST) were also administered.
Factor analysis was utilised to refine the factor structure of the IPQS. The difference between IPQS and KAST denoted the discriminant validity. The subscale scores among patients of different illness duration, educational attainment, and medication adherence in the past two years were significantly different (P＜0.05), indicating the known-group validity of the IPQS. Except for 'personal control' and 'burdensome effect', other subscales were internally consistent. Most of the subscales proved stable over a four-week period.
The Chinese version of IPQS can be used, with some refinements, to assess illness perceptions about schizophrenia for patients in future studies. This will provide empirical evidence for its generalizability and clinical utility and provide deeper insight into Chinese patients' illness perceptions about schizophrenia.
疾病感知与患者对健康威胁的反应以及进一步的健康结果有关。精神分裂症疾病感知问卷（IPQS）已在不同环境中应用。然而，其在中国大陆的有效性和可靠性仍不清楚。
测试中文版 IPQS 在中国大陆的心理测量特性。
一项横断面调查。
对北京的 200 名社区精神分裂症患者进行了调查。对仪器的有效性和可靠性进行了测试。除了人口统计学数据外，还对 IPQS 和精神分裂症知识测试（KAST）进行了评估。
采用因子分析对 IPQS 的因子结构进行了优化。IPQS 和 KAST 之间的差异表示判别效度。在过去两年中，不同疾病持续时间、教育程度和药物依从性的患者的亚量表评分存在显著差异（P＜0.05），表明 IPQS 的已知组有效性。除“个人控制”和“负担效应”外，其他分量表的内部一致性较好。大多数分量表在四周内保持稳定。
中文版 IPQS 可以在未来的研究中对精神分裂症患者的疾病感知进行评估，需要进行一些改进。这将为其推广和临床应用提供经验证据，并深入了解中国患者对精神分裂症的疾病感知。
