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Table 6 Comparison of mean improvement between pre-op and post-op measure on the original and transformed (0–100) scales

From: Performance of EQ-5D, howRu and Oxford hip & knee scores in assessing the outcome of hip and knee replacements

Improvement Original scales 0–100 scale
NHS hip replacements
 OHS 20.2 42.2
 EQ-5D Index 0.415 26.0
 EQ-VAS 10.2 10.2
NHS knee replacements
 OHS 15.3 31.8
 EQ-5D Index 0.301 18.6
 EQ-VAS 4.6 4.6
MCO hip replacements
 OHS 21.1 43.9
 howRu 3.9 32.5
MCO Knee replacements
 OKS 17.5 36.4
 howRu 3.1 25.6