The Pittsburgh Sleep Quality Index (PSQI), a self-administrated questionnaire, is a frequently used instrument to assess sleep quality in clinical and non-clinical populations. The aim of the study was to evaluate the psychometric properties of the Arabic PSQI among patients diagnosed with cancer. A cross-sectional and descriptive correlational design was used with 369 patients with cancer completing the 19-item Arabic version of the PSQI. The scale was assessed in terms of acceptability, internal consistency and validity. The Cronbach’s alpha coefficient for the Arabic PSQI was 0.77, demonstrating acceptable reliability. The global PSQI score did not have floor or ceiling effects. The PSQI Arabic version demonstrated good discriminative validity. Construct validity was explored by confirmatory factor analysis to examine the dimensional structure of the PSQI. The confirmatory factor analysis showed an acceptable fit for refined one-factor model. The results support the original single factor structure of the PSQI. The Arabic version of the PSQI demonstrated adequate reliability and validity for assessing sleep quality in Arabic-speaking patients diagnosed with cancer.

中文翻译：

---

用阿拉伯癌症患者验证匹兹堡睡眠质量指数 (PSQI)

匹兹堡睡眠质量指数 (PSQI) 是一种自我管理的问卷，是评估临床和非临床人群睡眠质量的常用工具。该研究的目的是评估被诊断患有癌症的患者的阿拉伯语 PSQI 的心理测量特性。对 369 名癌症患者使用横断面和描述性相关设计，完成了 19 项阿拉伯语版的 PSQI。该量表根据可接受性、内部一致性和有效性进行评估。阿拉伯语 PSQI 的 Cronbach α 系数为 0.77，表明可靠性可以接受。全球 PSQI 分数没有下限或上限效应。PSQI 阿拉伯语版本表现出良好的区分效度。通过验证性因素分析来探索结构效度，以检查 PSQI 的维度结构。验证性因素分析表明，对精制的单因素模型具有可接受的拟合。结果支持 PSQI 的原始单因素结构。阿拉伯语版本的 PSQI 在评估被诊断患有癌症的说阿拉伯语的患者的睡眠质量方面具有足够的可靠性和有效性。