Abstract
Computerized adaptive test (CAT) methods, based on item response theory (IRT), enable a patient-reported outcome instrument to be adapted to the individual patient while maintaining direct comparability of scores. The EORTC Quality of Life Group is developing a CAT version of the widely used EORTC QLQ-C30. We present the development and psychometric validation of the item pool for the first of the scales, physical functioning (PF).
Originalsprog | Engelsk |
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Tidsskrift | Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation |
Vol/bind | 20 |
Udgave nummer | 4 |
Sider (fra-til) | 479-90 |
Antal sider | 12 |
DOI | |
Status | Udgivet - 1 maj 2011 |