Why EQ-5D and the Oxford Hip and Knee scores do not measure the same things by Tim Benson

“…To aid comparison, each score was transformed arithmetically to a common 0 (floor) to 100 (ceiling) scale.Results EQ-Index, EQ-VAS and the Oxford scores give very different results in terms of change, effect size and correlation.Discussion More research is needed, but some speculative ideas are put forward, which could explain these findings.…”
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