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Validation of the EORTC CAT (Computer Adaptive Testing) instrument - feasibility and field study

Traditional questionnaires are completed with pen and paper and require all patients to complete identical questions. However questions within a scale may then be redundant for some patients. For example, when measuring physical functioning, if a patient has difficulty taking a short walk, they cannot take a long walk.

By developing item libraries with a wide range of questions from, “Do you spend most of the day in bed?” to “Can you run 5 kilometres?” and then tailoring the questions a patient is asked based on their previous responses, it is possible to improve precision without over-burdening patients.

This is known as Computer Adaptive Testing and CAT scores can be ‘mapped’ onto the original QLQ-C30 scale scores for historical comparison.

13 item banks have been developed for all the scales within the EORTC QLQ-C30 and validation of the CAT item banks using computer tablets is now underway.




Last updated: June 19, 2017