1 Palliativ Medicinsk Afdeling, Bispebjerg and Frederiksberg Hospital, The Capital Region of Denmark2 unknown
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).
Quality of Life Research : an International Journal of Quality of Life Aspects of Treatment, Care and Rehabilitation, 2011, Vol 20, Issue 4, p. 479-90