Spruijt R J, Wabeke K B
Academic Centre for Dentistry Amsterdam, The Netherlands.
J Oral Rehabil. 1995 Nov;22(11):803-8. doi: 10.1111/j.1365-2842.1995.tb00226.x.
This study focuses on the association between psychological factors and TMJ sounds, and the most suitable research design to establish this relation. A traditional research design is simulated to demonstrate how self-report may bias findings. A refined design is presented to obtain unbiased estimates of the role of psychological variables. In the 'naïve' design the importance of psychological variables was overestimated and the role of physiological variables was underestimated. It was concluded that future studies in the aetiology of TMJ clicking should abandon the use of self-report as a proxy for objective findings. With the refined design it was found that psychological factors play only a minor role in the prevalence of TMJ sounds. Findings do not support speculation about mechanisms that relate psychological factors to the presence of TMJ sounds.
本研究聚焦于心理因素与颞下颌关节弹响之间的关联，以及建立这种关系的最合适研究设计。模拟了一种传统研究设计以展示自我报告如何可能使研究结果产生偏差。提出了一种改进设计以获得心理变量作用的无偏估计。在“简单”设计中，心理变量的重要性被高估，而生理变量的作用被低估。得出的结论是，未来关于颞下颌关节弹响病因学的研究应摒弃将自我报告用作客观结果替代指标的做法。通过改进设计发现，心理因素在颞下颌关节弹响的患病率中仅起次要作用。研究结果不支持关于将心理因素与颞下颌关节弹响存在相关联的机制的推测。
