https://scholars.lib.ntu.edu.tw/handle/123456789/109114
Title: | Development of Computerised Adaptive Testing (Cat) for the Eortc Qlq-C30 Dimensions - General Approach and Initial Results for Physical Functioning | Authors: | CHIE, WEI-CHU | Keywords: | Computerised adaptive test;EORTC QLQ-C30;Item response theory;Item banking;Quality of life | Issue Date: | 2010 | Journal Volume: | v.46 | Journal Issue: | n.8 | Start page/Pages: | 1352-1358 | Source: | EUROPEAN JOURNAL OF CANCER | Abstract: | Background: Health-related quality of life (HRQOL) questionnaires should ideally be adapted to the individual patient and at the same time scores should be directly comparable across patients. This is achievable using a computerised adaptive test (CAT). Basing the CAT on an existing instrument enables measurement within an established HRQOL framework and allows backward- compatibility with studies using the original instrument. Because of these advantages the EORTC Quality of Life Group( QLG) has initiated a project to develop a CAT version of the widely used EORTC QLQ- C30. Methods: We present the EORTC QLG's strategy for developing a CAT. For each dimension of the EORTC QLQ-C30 our approach includes literature search and conceptualisation, formulation of new items, expert and patient evaluations, field-testing, and psychometric analyses of the items. The strategy is illustrated with the initial results of the development of CAT for physical functioning (PF). Results: We identified 975 PF items in the literature. Of these, 407 items were deemed relevant, i.e. measured one of the PF aspects measured by the QLQ-C30. Based on these items we developed 86 new items. Review by the EORTC CAT-project group reduced this to 66 items. Based on expert and patient evaluations several items were revised and the list was further reduced to 51 items. Conclusions: Based on the findings for PF, we believe that our approach will generate item pools that are relevant and appropriate for cancer patients. These will form the basis for a backward-compatible CAT assessing the HRQOL dimensions of the EORTC QLQ-C30. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/235734 |
Appears in Collections: | 公共衛生學系 |
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