Tennant Alan, McKenna Stephen P, Hagell Peter
Academic Unit of Musculoskeletal & Rehabilitation Medicine, University of Leeds, Leeds, UK.
Value Health. 2004 Sep-Oct;7 Suppl 1:S22-6. doi: 10.1111/j.1524-4733.2004.7s106.x.
This paper discusses recent advances that have been made in the field of psychometrics, specifically, the application of Rasch analysis to the instrument development process. It emphasizes the importance of assessing the fundamental scaling properties of an instrument prior to consideration of traditional psychometric indicators. The paper introduces Rasch analysis and shows how it has been applied in the development of needs-based measures in order to ensure that they provide unidimensional measurement. By ensuring that scales are based on the same measurement model and that they fit the Rasch model it is possible for QoL scores to be compared across diseases by means of cocalibration and item banking.
本文讨论了心理测量学领域的最新进展，具体而言，是拉施分析在工具开发过程中的应用。它强调在考虑传统心理测量指标之前评估工具基本量表特性的重要性。本文介绍了拉施分析，并展示了它如何应用于基于需求的测量工具的开发，以确保这些工具提供单维测量。通过确保量表基于相同的测量模型且符合拉施模型，生活质量得分就有可能通过共同校准和项目库在不同疾病之间进行比较。
