癌症患者 PDRQ-9 的心理计量特性：医患关系问卷
Psychometric Properties of the PDRQ-9 in Cancer Patients: Patient-Doctor Relationship Questionnaire.
机构信息
University of Barcelona.
出版信息
Psicothema. 2021 May;33(2):304-311. doi: 10.7334/psicothema2020.393.
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.
背景
医患关系是医疗保健中的一个重要概念。本研究旨在评估患者医生关系问卷（PDRQ-9）的心理测量特性、收敛效度和因子不变性。
方法
采用验证性因子分析探讨该量表的维度，并在 560 名前瞻性、多中心队列患者中测试性、年龄和肿瘤部位的强测量不变性，这些患者完成了 PDRQ-9、健康相关生活质量问卷（EORTC-QLQ-C30）和简明症状量表（BSI）。
结果
数据支持单维结构。可以限制门槛和因子载荷在性别、年龄和肿瘤部位之间具有不变性，表明具有很强的测量不变性。从多维结构得出的分数表现出令人满意的可靠性和确定性程度。与功能（p<.001）和总体生活质量（p<.001）呈适度正相关，与心理困扰呈负相关（p<.001），为收敛效度提供了证据。对肿瘤医生的满意度低与焦虑（p=.006）和抑郁（p=.004）有关。
结论
PDRQ-9 是一种适用于评估癌症患者医患关系质量的有效工具。
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