Department of Consultation-Liaison Psychiatry and Psychosomatic Medicine, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
Department of Consultation-Liaison Psychiatry and Psychosomatic Medicine, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
J Psychosom Res. 2024 Dec;187:111928. doi: 10.1016/j.jpsychores.2024.111928. Epub 2024 Sep 12.
In this cross-sectional study, a German translation of the subscale "Purpose in Life" (PLQ) from the Scales of Psychological Well-being (SPWB) was validated in a representative sample of participants from healthy and cardiovascular populations. The main objectives were to assess the reliability, convergent, and discriminant validity using a large and representative sample (N = 466 healthy sample, N = 247 patients with an implanted cardioverter-defibrillator (ICD), N = 70 patients with a cardiovascular disease (CVD)). The findings indicated that the German PLQ is a reliable and valid measure of positive psychological well-being, showing a positive correlation with health-related quality of life, optimism, and positive affect. In turn, the PLQ score was significantly and negatively correlated with depressive symptom severity, anxiety, pessimism, and negative affect, while being distinct from these constructs. The comparability of the measurement properties of the German PLQ with the original English version further supports the validity of the translation. Additionally, the unidimensional structure of the German version mirrored that of the English PLQ. As this study used a large and representative sample, it provides the most up-to-date normative population value for the subscale of the SPWB. Moreover, this study represents the first known exploration of the questionnaire in a cardiovascular sample, revealing relationships between health-related quality of life, optimism, positive affect, and the German PLQ. However, in patients with ICD, the positive correlation between the PLQ and the physical component of the SF-12 did not reach significance. Despite these valuable findings, future research to enhance the understanding of the PLQ and its implications is warranted.
在这项横断面研究中，对健康和心血管人群样本中进行了心理幸福感量表（SPWB）的“生活目的”（PLQ）子量表的德语翻译验证。主要目的是使用大量代表性样本（N=466 例健康样本，N=247 例植入式心脏复律除颤器（ICD）患者，N=70 例心血管疾病（CVD）患者）评估可靠性、收敛和判别效度。研究结果表明，德语版 PLQ 是衡量积极心理幸福感的可靠和有效的工具，与健康相关的生活质量、乐观主义和积极情绪呈正相关。相反，PLQ 得分与抑郁症状严重程度、焦虑、悲观和消极情绪呈显著负相关，而与这些结构不同。德语版 PLQ 的测量特性与原始英文版的可比性进一步支持了翻译的有效性。此外，德语版的单维结构反映了英语版 PLQ 的结构。由于本研究使用了大量的代表性样本，因此为 SPWB 的子量表提供了最新的正态人口值。此外，本研究首次在心血管样本中探索了该问卷，揭示了健康相关生活质量、乐观主义、积极情绪与德语 PLQ 之间的关系。然而，在 ICD 患者中，PLQ 与 SF-12 的物理成分之间的正相关未达到显著水平。尽管有这些有价值的发现，但仍需要进一步研究以增强对 PLQ 及其含义的理解。
