BACKGROUND The patient-doctor relationship is an important concept in health care. The aim of this study was to evaluate the psychometric properties, convergent validity, and factorial invariance of the Patient-Doctor Relationship Questionnaire (PDRQ-9). METHOD Confirmatory factor analysis was conducted to explore the scale's dimensionality and test for strong measurement invariance across sex, age, and tumor site in a prospective, multicenter cohort of 560 patients who completed the PDRQ-9, Health-related Quality of Life Questionnaire (EORTC-QLQ-C30), and Brief Symptom Inventory (BSI) scales. RESULTS The data supported a unidimensional structure. Thresholds and factor loadings could be constrained to be invariant across sex, age, and tumor site, indicating strong measurement invariance. Scores derived from the unidimensional structure exhibited satisfactory degrees of reliability and determinacy. Evidence of convergent validity was supported by modest positive correlations with functional (p<.001) and global quality-of-life (p<.001) and negative correlations with psychological distress (p<.001). Low satisfaction with the oncologist was associated with anxiety (p=.006), and depression (p=.004). CONCLUSIONS The PDRQ-9 is a suitable, valid instrument for assessing the quality of patient-doctor relationships in cancer patients.

中文翻译：

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癌症患者中PDRQ-9的心理测量特性：“医患关系调查表”。

背景技术医患关系是卫生保健中的重要概念。这项研究的目的是评估患者-医生关系问卷（PDRQ-9）的心理测量特性，收敛效度和因式不变性。方法对560名完成PDRQ-9，健康相关生活质量问卷（EORTC）的患者进行前瞻性，多中心队列研究，进行验证性因子分析以探讨量表的尺寸，并检验性别，年龄和肿瘤部位之间的强烈测量不变性。 -QLQ-C30）和简要症状清单（BSI）量表。结果数据支持一维结构。可以将阈值和因子负载限制为在性别，年龄和肿瘤部位之间不变，这表明测量的不变性很强。从一维结构得出的分数显示出令人满意的可靠性和确定性程度。与功能性（p <.001）和整体生活质量（p <.001）的适度正相关以及与心理困扰的负相关（p <.001）的适度正相关支持了收敛效度的证据。对肿瘤科医生的低满意度与焦虑（p = .006）和抑郁（p = .004）有关。结论PDRQ-9是评估癌症患者中医患关系质量的合适，有效工具。对肿瘤科医生的低满意度与焦虑（p = .006）和抑郁（p = .004）有关。结论PDRQ-9是评估癌症患者中医患关系质量的合适，有效工具。对肿瘤科医生的低满意度与焦虑（p = .006）和抑郁（p = .004）有关。结论PDRQ-9是评估癌症患者中医患关系质量的合适，有效工具。